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Hardware Design MGM-312E_HW_UGD_V1.1 Hardware Design guide document Reference :
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H/W MGM-312E Draft 001 14 Sep 2011 Copyright by MTH. All rights reserved. This document is the sole and exclusive property of MTH. Not to be distributed or divulged without prior written agreement. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Function Date Copyright by MTH. All rights reserved. Document Information Written by Approved by Distribute to Table of Contents 1 Name Introduction ......................................................................................................... 4 1.1 Scope ........................................................................................................................................ 4 1.2 Reference documents ............................................................................................................... 4 2 MGM-312E Overview .......................................................................................... 4 2.1 MGM-312E Key Features ......................................................................................................... 4 2.2 MGM-312E Functional Diagram ............................................................................................... 5 2.3 MGM-312E Evaluation Board ................................................................................................... 5 3 Application Interface .......................................................................................... 6 3.1 MGM-312E Pin Description ...................................................................................................... 6 3.2 Power Supply ............................................................................................................................ 8 3.3 Power Up and Power down Scenarios ..................................................................................... 9 3.4 Power Saving .......................................................................................................................... 11 3.5 RTC backup ............................................................................................................................ 12 3.6 Serial interface ........................................................................................................................ 13 3.7 Audio interface ........................................................................................................................ 14 3.8 SIM Card interface .................................................................................................................. 16 3.9 SPI interface ............................................................................................................................ 17 3.10 ADC ......................................................................................................................................... 17 3.11 RI ............................................................................................................................................. 18 3.12 Network Status Indication ....................................................................................................... 19 3.13 Keypad Interface ..................................................................................................................... 20 3.14 Buzzer ..................................................................................................................................... 20 3.15 Two-wire bus interface [I2C] ................................................................................................... 21 3.16 USB Interface .......................................................................................................................... 21 3.17 Radio interface ........................................................................................................................ 22 3.18 PCB design ............................................................................................................................. 22 4 Electrical, Reliability and Radio Characteristics ............................................ 24 4.1 Absolute maximum Ratings .................................................................................................... 24 4.2 Recommended Operating Conditions ..................................................................................... 24 4.3 Digital Interface Characteristics .............................................................................................. 24 4.4 SIM Card Interface Characteristics ......................................................................................... 24 4.5 VRTC Characteristics ............................................................................................................. 24 4.6 Current Consumption (VBAT = 3.8V) ..................................................................................... 25 4.7 ESD (Electro-Static Discharge) ............................................................................................... 26 4.8 Radio Characteristics .............................................................................................................. 26 5 Mechanics ......................................................................................................... 27 Design Document Rev 008 14 Mars 200611 Page 2 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. 5.1 Mechanical Dimensions .......................................................................................................... 27 5.2 Install the MGM-312E onto the host device. .......................................................................... 28 5.3 Board-to-board connector ....................................................................................................... 29 5.4 RF connector ........................................................................................................................... 30 5.5 Top View of the MGM-312E .................................................................................................... 32 5.6 PIN Assignment of MGM-312E ............................................................................................... 32 6 Regulatory Notes .............................................................................................. 33 7 Document History ............................................................................................. 34 List of Figures Figure 1 MGM-312E Functional diagram ............................................................................................... 5 Figure 2 EVB and accessory equipment ................................................................................................. 6 Figure 3 Waveform of the max drop and ripple authorized for VBATT .................................................. 8 Figure 4 Reference circuit of the Power supply...................................................................................... 9 Figure 5 Powered up/down module using transistor .............................................................................. 9 Figure 6 Powered up/down module using button .................................................................................. 10 Figure 7 Timing of the power up ............................................................................................................ 10 Figure 8 Timing of the power down by PWRKEY ................................................................................. 11 Figure 9 RTC supply from large capacitance capacitor ........................................................................ 12 Figure 10 RTC supply from rechargeable backup battery .................................................................... 12 Figure 11 SEIKO XH414H-IV01E Charge-Discharge Characteristic .................................................... 13 Figure 12 Connection of the serial interfaces ........................................................................................ 13 Figure 13 Connection of RXD, TXD and RTS, CTS only ...................................................................... 14 Figure 14 Connection of Debug serial interface .................................................................................... 14 Figure 15 Receiver reference circuit ..................................................................................................... 15 Figure 16 Microphone reference circuit ................................................................................................. 15 Figure 17 Ear microphone reference circuit .......................................................................................... 16 Figure 18 SIM Socket for module application........................................................................................ 17 Figure 19 Battery TEMP or Application TEMP ADC input (with NTC=100K) ....................................... 18 Figure 20 RI behaviour of data calling as a receiver ............................................................................. 19 Figure 21 RI behaviour of URC or receive SMS ................................................................................... 19 Figure 22 RI behaviour as a caller ........................................................................................................ 19 Figure 23 Reference circuit of NETLIGHT ............................................................................................ 20 Figure 24 Keypad interface ................................................................................................................... 20 Figure 25 Two-wire bus interface [I2C] ................................................................................................. 21 Figure 26 USB interface ........................................................................................................................ 21 Figure 27 Solder mask open (The shield can space of MGM-312E) .................................................... 23 Figure 28 Avoid placing digital line underneath audio lines .................................................................. 23 Figure 29 Top and Side mechanical dimension of MGM-312E (Unit: mm) ........................................... 27 Figure 30 Recommended PCB footprint outline (Unit: mm) .................................................................. 28 Figure 31 AXK6F60347YG board-to-board connector .......................................................................... 29 Figure 32 AXK6F60347YG PCB footprint outline (Unit: mm) ................................................................ 30 Figure 33 U.FL-R-SMT .......................................................................................................................... 31 Figure 34 U.FL series RF adapter cable ............................................................................................... 31 Figure 35 MGM-312E module Top view ................................................................................................ 32 Design Document Rev 008 14 Mars 200611 Page 3 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. 1 Introduction 1.1 Scope This document describes the hardware interface of the MGM-312E module that connects to the specific application. 1.2 Reference documents
[REF1] MH2600 Datasheet.
[REF2] MGM-312-EVB-UGD 2 MGM-312E Overview MGM-312E is a Quad-band GSM/GPRS/EDGE engine that works on GSM850, GSM900, DCS1800 and PCS1900. MGM-312E provides GPRS/EDGE multi-slot class 12 capability and supports the coding schemes CS1~4, MCS1~9. MGM-312E is integrated with the TCP/IP protocol. Extended TCP/IP AT commands are developed for customers to use the TCP/IP protocol easily, which is very useful for those data transfer applications. 2.1 MGM-312E Key Features MGM-312E module supports R99 GSM/GPRS/EDGE protocol stack.
Power supply: 3.3V~4.8V
Temperature range: -30C ~+80C (Normal operation)
Power saving: 1.6mA(battery power, MFS=9)
Quad band support: GSM 850Mhz, EGSM 900Mhz, DCS 1800Mhz, PCS 1900Mhz Compliant to GSM Phase2/2+
Transmit Power GMSK:
- Class 4, 2W at GSM850, EGSM900
- Class 1, 1W at DCS1800, PCS1900 8PSK:
- Class E2, 0.5W at GSM850, EGSM900
- Class E2, 0.4W at DCS1800, PCS1900
GPRS multi slot class 12
Coding schemes CS1~CS4, MCS1~9
Mobile station class B
DATA transfer:
- GPRS bit rate: Down-link: 85.6kbps (max), 53.6kbps (typ.) Up-link: 42.8kbps (max), 26.8kbps (typ.)
- EDGE bit rate: Down-link: 236.8kbps (max) Up-link: 236.8kbps (max)
Encryption algorithms A5/1, A5/2, A5/3
Integrate the TCP/IP protocol
CSD, USSD support
SMS, FAX(Group3, Class1) support
1.8V/3.0V SIM card support
External antenna: antenna pad and connector Design Document Rev 008 14 Mars 200611 Page 4 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design
Audio speech codec: HR, FR, EFR, AMR
Echo cancellation, Noise Suppression
Serial port: Full modem interface.(with control and status lines), 1200bps to 115200bps
GPIO, I2C, SPI, USB, support
Keypad support (5x5 matrix)
SIM application toolkit support
Real time clock support
Physical characteristic: size: 40mm x 33mm x 3mm
Firmware upgradeable by UART port 2.2 MGM-312E Functional Diagram MGM-312E modules inner diagram is listed as follows.
GSM baseband [MH2600]
MCP[Nor flash 32Mbit, psram 16Mbit]
GSM RF part[RF transceiver, RF frontend module, SAW filter]
Antenna connector
60pin board to board connector
Power management RF Part Baseband
[MH2600]
ANT Con. 60Pin connector RF UART SIM KEY AUDIO GPIO USB I2C SPI ADC MCP
[32Mb x 16Mb]
Power POWER Figure 1 MGM-312E Functional diagram 2.3 MGM-312E Evaluation Board MTH supplies the MGM_EVB Kit for the easy applying MGM-312E module to applications. On MGM_EVB Kit, the 2 serial ports and all GPIO are pulled out by 2.54mm Pitch standard connector, so its easy for debugging, and designed to be tested as attaching on the realizing applications. For the details of module, see the document of MGM-312E-EVB-UGD. Design Document Rev 008 14 Mars 200611 Page 5 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 2 EVB and accessory equipment 3 Application Interface MGM-312E modules interface signals are connected with 60pin board-to-board connector. Since the pin number of board-to-board is limited, several signals are multiplexed. The multiplexed signal is set up by default option on the stage of module production and can be changed by the customers request. 3.1 MGM-312E Pin Description Pin name Power VBAT VRTC VDD_EXT GND Power on/off PWRKEY Audio interfaces MIC1P MIC1N Design Document Pin number I/O Description Comment 1,2,3,4,5, 6,7,8 15 17 9,10,11,12, 13,14,50,51 34 I I/O O I Power supply 3.3V~4.8V Power supply for RTC 2.8V output power supply It is recommended to connect with a RTC back-up battery or a capacitor If it is unused, keep open. PWRKEY should be pulled up at least 1 second and then released to power on/off the module VIL = 0.9V(max) VIH = 2.6V(min) VImax = battery VImin = 0V It has pulled down internally(100KR,GND) 53 55 I Differential audio input If these pins are unused, keep open Rev 008 14 Mars 200611 Page 6 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design 30 54 56 57 59 58 60 Copyright by MTH. All rights reserved. SPK1P SPK1N MIC2P MIC2N SPK2P SPK2N Status NETLIGHT SPI interface(LCD interface) / USB interface SPI1_CLK / USB_DM SPI1_DATA / USB_DP SPI1_SDIO / USB_DET SPI1_CS / GPIO20 SPI1_RST / GPIO21 Keypad interface / GPIOs / I2C1 / I2C2 / Etc. ROW0/GPIO54/I2C1_SDA ROW1/GPIO53/I2C1_SCK ROW2/GPIO60/SIM2_RST/
ROW3/GPIO19/SIM2_CLK ROW4/GPIO18/SIM2_DATA COL0/GPIO49/HS_DET COL1/GPIO55/I2C2_SDA COL2/GPIO56/I2C2_SCK COL3/GPIO16/DBG_CTS COL4/GPIO14/DBG_RTS Serial port RXD 27 29 31 33 35 37 39 41 43 45 20 18 24 22 26 40 TXD RTS CTS RI DCD DTR Debug interface DBG_TXD / GPIO17 DBG_RXD / GPIO15 SIM interface SIM_VDD SIM_DATA SIM_CLK SIM_RST SIM_PRESENCE / GPIO44 ADC ADC0 Pulse With Modulation BUZZER 42 44 46 48 28 38 49 47 19 21 23 25 16 52 36 O I O O I/O I/O I/O O O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I O I O O O I O I O I/O O O I/
I Differential audio output Differential audio input Differential audio output Network status Defaults are as USB and GPIO , they can be multiplexed as SPI Defaults are as KEYPAD If these pins are unused, keep open Receive data Transmit data Request to send Clear to send Ring indicator Data carry detect Data terminal Ready Serial interface for debugging or GPS interface Voltage supply for SIM card. Support 1.8V or 3.0V SIM card SIM data in/out SIM clock SIM reset SIM card detection General purpose analogy to digital converter. Input voltage: 0V~2.8V This pin should be pulled up to 2.8V externally If these pins are unused, keep open
(voltage Level: 2.8V) If these pins are unused, keep open. All signals of SIM interface. If SIM_PRESENCE is unused, just keep open If it is unused, keep open. O PWM output If it is unused, keep open. Design Document Rev 008 14 Mars 200611 Page 7 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. 3.2 Power Supply The power supply is one of the key issues in the design of a GSM terminal. Due to the bursted emission in GSM/GPRS, the power supply must be able to on the supply voltage must not exceed a certain limit. In communication mode, a GSM/GPRS terminal transmits 577us (1TX) or 1154us (2TX) radio bursts every 4.615ms, as described in the diagram hereunder. Figure 3 Waveform of the max drop and ripple authorized for VBATT The power supply voltage features given in the table hereafter will guarantee the nominal operation of the module VBATT Vmin 3.3V*
Vnom 3.6V Vmax 4.8V Condition Uripple 50mVpp for f < 200kHz Uripple 2mVpp for f>200kHz
(*): This value has to be guaranteed during the burst (with 2.0A peak in GSM mode) The transmitting burst will cause voltage drop and the power supply must be able to provide sufficient current up to 2A. For the VBAT input, a bypass capacitor (low ESR) such as a 100uF is strongly recommended; this capacitor should be placed as close as possible to MGM-312E VBAT pins. There are 3 ways of supplying power to MGM-312E.
To connect battery directly.
To use linear regulator.
To use DC-DC converter. For low voltage drop of VBAT, its suggested to connect battery directly or use DC-DC convertor. The PCB traces from the VBAT pins to the power supply must be wide enough (at least 60mil) to decrease voltage drops in the transmit burst. The power IC and the bypass capacitor should be placed to the module as close as possible. Design Document Rev 008 14 Mars 200611 Page 8 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 4 Reference circuit of the Power supply 3.3 Power Up and Power down Scenarios 3.3.1 Power up MGM-312E For the power up of MGM-312E module, PWRKEY pin is used. To switch on the power of module, its enough for pulling up the PWRKEY pin just about 1sec. PWRKEY is already pulled down by 100K resistance in module, so the pulling down on outside is not needed, and you can see the reference circuit below. Figure 5 Powered up/down module using transistor Design Document Rev 008 14 Mars 200611 Page 9 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 6 Powered up/down module using button The power on scenario is described on the picture below. Figure 7 Timing of the power up When the power up of MGM-312E is done, the module will send powered up command by 115,200bps baud rate. 3.3.2 Power down MGM-312E The way of power down MGM-312E is described here below.
Normal power down procedure: power down MGM-312E by the PWRKEY pin.
Normal power down procedure: power down MGM-312E by AT command AT+CPOWN=1
Abnormal power down: over-voltage or under-voltage automatic power down
Abnormal power down: over-temperature or under-temperature automatic power down Design Document Rev 008 14 Mars 200611 Page 10 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 8 Timing of the power down by PWRKEY The process of MGM-312Es power down contains the work of safe logging off the connected network status and safe power off the working part of module on software. On the case of normal down mode, AT commands cannot be executed any more, and only the RTC is still active, power down mode can also indicated by STATUS pin, which is at low level at this time, Power down of MGM-312E by AT Command;
MGM-312E module can be power down by AT command. AT+CPOWD=1. This procedure makes the module log off from the network. For detail about the AT command AT+CPOWD, please refer to AT Command document 3.4 Power Saving MGM-312E has two sleep modes
Mode1: enabled by hardware pin DTR
Mode2: enabled by serial port regardless of the DTR In sleep mode, the current consumption of the module is very low. Sleep Mode1 (AT+CSCLK=1) User can control MGM-312E module to enter or exit the sleep mode1 (AT+CSCLK=1) by DTR signal. When DTR is in high level and without interrupt (on air and hardware such as GPIO interrupt or data in serial port), MGM-312E will enter sleep mode1 automatically. In this mode, MGM-312E can still receiver paging or SMS from network but the serial port is not accessible. Note: For MGM-312E, it is requested to set AT command AT+CSCLK=1 and to ensure DTR at high level to enable the sleep mode1; the default value is 0, which can not make the module to go into sleep mode. Wake Up MGM-312E form Sleep Mode1 (AT+CSCLK=1) When MGM-312E is in sleep mode1 (AT+CSCLK=1), the following methods can wake up the module:
The serial port will be active after DTR pin is pulled to low level for about 50ms.
Pull down DTR pin.
Receiver a voice or data from network.
Receiver a SMS from network. Sleep Mode2 (AT+CSCLK=2) Design Document Rev 008 14 Mars 200611 Page 11 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. In this mode, MGM-312E will continuously monitor the serial port data signal. When there is no data transfer over 5seconds on the RXD signal and there is no on air and hardware interrupts (such as GPIO interrupt), MGM-312E will enter sleep mode 2 automatically. In this mode, MGM-312E can still receiver paging or SMS from network but the serial port is not accessible. Wake Up MGM-312E form Sleep Mode1 (AT+CSCLK=2) When MGM-312E is in sleep mode2 (AT+CSCLK=2), the following methods can wake up the module:
Send data to MGM-312E via main serial port
Receiver a voice or data call form network
Receiver a SMS from network 3.5 RTC backup The RTC pin of MGM-312E will be current input when VBAT is not supplied, and will be current output when VBAT is supplied and backup battery is low. The RTC power supply of the module can be provided by an external capacitor or a battery through the VRTC. The following figures show various reference circuits for RTC back up. External capacitor backup Figure 9 RTC supply from large capacitance capacitor Rechargeable backup battery Figure 10 RTC supply from rechargeable backup battery Design Document Rev 008 14 Mars 200611 Page 12 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. Coin type rechargeable backup battery is recommended, such as XH414H-IV01E from SEIKO can be used. Typical charge-discharge curves for this battery are shown in the following figure. Figure 11 SEIKO XH414H-IV01E Charge-Discharge Characteristic 3.6 Serial interface MGM-312E provides two UART serial ports. One is the main serial port and the other is the debug port. The module is designed as a DCE (Data Communication Equipment). The following figure shows the connection between module and client (DTE). TXD RXD RTS CTS DTR DCD RI Terminal
[DTE]
TXD 41 RXD 40 RTS 44 CTS 46 DTR 38 DCD 28 RI 48 MGM312E Module
[DCE]
Figure 12 Connection of the serial interfaces If only 4-wire serial interface are used in users application, other pins should be kept open. Please refer to following figure. Design Document Rev 008 14 Mars 200611 Page 13 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design TXD RXD RTS CTS DTR DCD RI Terminal
[DTE]
TXD 41 RXD 40 RTS 44 CTS 46 DTR 38 DCD 28 RI 48 MGM312E Module
[DCE]
Figure 13 Connection of RXD, TXD and RTS, CTS only If sleep mode is need in this situation, the user need to connect the DTR signal as well, or only sleep mode2 can be used. To use Debug and UART2 serial port, the connection can be as follows. UART2 serial port baud rate is 115200bps, and only using TXD, RXD signal is available. DBG_RTS, DBG_CTS signal is multiplexed with KEYPAD COL4 and COL3 signal, and the default value is KEYPAD. To use DBG_RTS, DBG_CTS, it can be changed by the request of customer. TXD RXD RTS CTS DBG_TXD 49 DBG_RXD 47 DBG_RTS 45 DBG_CTS 43 Terminal
[DTE]
MGM312E Module
[DCE]
Figure 14 Connection of Debug serial interface Function of serial port;
Full modem device.
Contains data line TXD and RXD, hardware flow control lines RTS and CTS, status lines DTR, DCD and RI
Serial port can be used for CSD FAX, GPRS service and AT communication. It can also be used for multiplexing function.
Serial port supports the following baud rates:
1200,2300.4800,9600,19200,38400,57600,115200bps The serial port support the CMOS level. If user connects the module to the computer, the level shifter should be added between the DCT and DTE 3.7 Audio interface The chapter describes the implementation of:
Main Microphone Design Document Rev 008 14 Mars 200611 Page 14 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved.
Main Receiver
Headset A typical design of these features can be represented as follows:
Main receiver;
Speaker outputs of the MGM-312E Audio (SPK1P and SPK1N) signals can be directly connected to a receiver. Figure 15 Receiver reference circuit 10R, are recommended for the first version of handset design. Depending an audio quality tests, these components could be used to implement LC filter or removed if they are not necessary. The main receiver outputs must be loaded to 16 and can directly drive a 32 or 16 speaker. To be compliant with MGM-312E and general GSM requirements, it is strongly recommended to meet the following characteristics:
Parameter Impedance Input Power Input Voltage Sound Pressure Level Main microphone;
Since MIC1P and MIC1N signals integrate a biasing source through the MGM-312E module. It is more convenient to use these inputs to interface the main microphone. These differential signals can be directly connected to a standard electric microphone (2V-0.5mA) Typ 16 or 32 0.2 77 Symbol Zspk Prms Vrms SPL Unit W Vrms dB Max 0.3 Min Figure 16 Microphone reference circuit Design Document Rev 008 14 Mars 200611 Page 15 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. For the Microphone reference circuit, 100nH Inductors are recommended for the first version of handset design. Depending on audio quality tests, these components could be used to implement a LC filter or removed if they are not necessary. Microphone selection;
To be compliant with MGM-312E and general GSM requirements, it is strongly recommended to meet the following characteristics:
Parameter Input impedance Power Supply Internal Capacitor(1) Sensitivity(2) Note (1): To suppress TDMA noise, it is mandatory to use microphone with tow internal decoupling capacitors:
symbol Min Zi Vpol Ci S Typ 2.2 2 33 and 15 Unit K V pF dB Max
33pF for 900MHz filtering.
15pF for 1800MHz filtering. Note (2): As the distance between mouth and microphone is bigger than with the main microphone, the sensitivity of the microphone has to be higher. Ear microphone headset;
For a headset using a differential receiver connection, the recommended circuit is shown below:
Figure 17 Ear microphone reference circuit 3.8 SIM Card interface It is possible to manage dual voltage (1.8V/3.0V) or single voltage only SIM cards with a MGM-312E module using the internal level shifter. It is recommended to add Transient Voltage Suppressor (TVS) on the signals connected to the SIM socket in order to prevent any Electrostatic Discharge. TVS diodes with low capacitance (less than 10pF) have to be connected on SIM_CLK, SIM_DATA to avoid any disturbance of the rising and falling edges. This type of diode is mandatory for the Full Type Approval. Diodes must be placed as close as possible to the SIM socket. Design Document Rev 008 14 Mars 200611 Page 16 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. Figure 18 SIM Socket for module application This example of SIM socket implementation is given for module application, with the CC signal connected to the SIM_PRES input. For another application, the SIM_PRES signal is not mandatory. The capacitor (100nF) on SIM_VCC (pin1 of the SIM socket) must be placed as close as possible to the SIM socket. 3.9 SPI interface MGM-312E provides a serial LCD display interface. It could also be used as SPI interface in the embedded AT application. Note: This function is not supported in the standard firmware. If user wants this function, the firmware must be customized. Please contact MTH for more details. 3.10 ADC An Analogy to Digital Converter is available on the MGM-312E module. This convertor has a 12-bit resolution, ranging from 0.2V to 2.8V Typical application;
Design Document Rev 008 14 Mars 200611 Page 17 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 19 Battery TEMP or Application TEMP ADC input (with NTC=100K) This battery TEMP ADC input is used to check the temperature of a battery or application product. Voltage applied on ADC input must be included between 0.2V and 2.8V. As a consequence for a 100K NTC, A 330K resistor must be used. This resistor is also used in order to get the voltage linear in relation to the temperature as shown in the figure below:
Temperature (C)
-40
-30
-20
-10 0 10 20 25 30 40 50 60 70 80 Note: NTC(Murata, NCP15WF104D) 3.11 RI BAT_TEMP (v) 2.11 2.07 2.01 1.91 1.77 1.57 1.34 1.21 1.09 0.85 0.65 0.48 0.35 0.26 R NTC (k) 4221.283 2146.996 1136.590 624.987 355.975 209.489 127.057 100 79.222 50.677 33.195 22.224 15.184 10.566 Req (k) 306.1 286 255.7 215.9 171.2 128.1 91.7 76.7 63.9 43.9 30.2 20.8 14.5 10.2 RI Behaviours:
State Standby Voice call Data call SMS URC RI response High The pin is changed to low. When any of the following events occurs, the pin will be changed to high:
Establish the call
Hang up the call The pin is changed to low, and kept low for 120ms when a SMS is received. Then it is changed to high. The pin changed to low, and kept low for 120ms when some URCs are reported. Then it is changed to high. Design Document Rev 008 14 Mars 200611 Page 18 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. Note: URC is Unsolicited result Code The behaviour of the RI pin is shown in the following figure when the module is used as a receiver. Figure 20 RI behaviour of data calling as a receiver High Low 120ms Idle Figure 21 RI behaviour of URC or receive SMS However, if the module is used as caller, the RI will remain high, Please refer to the following figure. High Low Idle Ring Establish the call Hang up the call Idle Figure 22 RI behaviour as a caller 3.12 Network Status Indication The HETLIGHT pin can be used to drive a network status indication LED.
Off: Not running.
64ms On / 800ms Off: Not registered network.
64ms On / 3000ms Off: Registered to the network.
64ms On / 300ms Off: GPRS/EDGE communication established. A reference circuit is recommended in the following figure:
Design Document Rev 008 14 Mars 200611 Page 19 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 23 Reference circuit of NETLIGHT 3.13 Keypad Interface This interface provides 10 connections:
5 rows (ROW0 to ROW4)
5 columns (COL0 to COL4) Digital scanning and debouncing are done within the MGM-312E modules. No discrete components like R, C (Resistor, Capacitor) are needed. Figure 24 Keypad interface Note: This function is not supported in the standard firmware. If user wants this function, the firmware must be customized. Please contact MTH for more details. 3.14 Buzzer Feature of buzzer:
10-bit resolution for buzzer tone frequency generation from 200Hz to 5KHz
Tone frequency error <1% for all standard piano tones from 200Hz to 5KHz
Tone level control from 2dB down to -24dB in +4dB steps
Audio mute Design Document Rev 008 14 Mars 200611 Page 20 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. The buzzer output a square wave at the desired tone frequency. The tone frequencies are programmable from 200Hz to 5kHz and can be re-programmed on-the-fly to generate monophonic audio ring tones or alert tones. The tone level can be adjusted over a 24dB range in 4dB steps, or it can be muted. 3.15 Two-wire bus interface [I2C]
The two-wire bus includes a clock signal (SCL) and a DATA signal (SDA) complying with a standard two-wire bus (I2C compatible). For two-wire bus complains, two pull-up resistors must be added on the application board on the SDA and SCL signals (between 2.2KR and 4.7KR). Typical implementation:
Figure 25 Two-wire bus interface [I2C]
3.16 USB Interface The MGM-312E module integrates a USB interface, complying with USB2.0 protocol. The USB port of the MGM-312E module runs on 3.3V voltage. The USB_DET is connected to the external interruption pin of the module (DISP_D/C) to detect the plug of the USB cable. For a USB port connection, the recommended circuit is shown below:
Figure 26 USB interface Design Document Rev 008 14 Mars 200611 Page 21 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. Note: DISP_D/C signal of the module is multiplexed USB_DET. 3.17 Radio interface Antenna recommendations Antenna must fulfil following requirements:
Frequency bands:
Band GMS850 E-GSM900 DCS1800 PCS1900 Transmit band (Tx) 824~849MHz 880~915MHz 1710~1785MHz 1850~1910MHz Receive band (Rx) 869~894MHz 925~960MHz 1805~1880MHz 1930~1990MHz
RF impedance: 50 Ohms
VSWR: max 2:1
Gain: 0dBi typical 3.18 PCB design General rules and constraints Clock and other high frequency digital signals (e.g. serial buses) should be routed as far as possible from the MGM-312E analog signals. If the application design makes it possible, all analog signals should be separated from digital by a Ground line on the PCB. Power supply routing constraints
It is important to take care of the ground track or the ground plane which supplies the module. The track or the plane used must support current peaks as for the VBAT track.
If the ground track between the module and the power supply is a ground plane, it must not be parcelled out.
Since the maximum peak current can reach 2A, MTH strongly recommends a large width for the layout of the power supply signal (to minimize voltage losses between the external power supply and the module supply).
MGM-312E power pins should be gathered in a same piece of copper
The routing must be done in such a way that the total impedance line must be 10m
(Printed line + Vias holes + Battery power supply contact).
Some signals such as VBAT require EMI/RFI decoupling. For that, use 33pF capacitor close to the module, or a serial ferrite bead (or both to get better results). In case a ferrite bead is used, the recommendations given for the power supply connection must be carefully followed
(high current capacity and low impedance).
If these design rules are not followed, phase error (peak) and power loss could occur. Design Document Rev 008 14 Mars 200611 Page 22 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 27 Solder mask open (The shield can space of MGM-312E) Shielding SIM interface routing constraints
The MGM-312E modules top side shielding is metal, and connected with the inner ground.
The metal shielding can should be connected to PCB and soldered.
For the SIM interface, length of the track between the MGM-312E module and the SIM connector should be as short as possible. Maximum length recommended 1s 10cm.
ESD protection is mandatory on the SIM lines if access from outside of the SIM connector is possible.
The capacitor on SIM_VCC signal (100nF) must be placed as close as possible to the MGM-
312E module on the PCB Audio circuit routing constraints GSM antenna line (to avoid TDMA noise) the time as close as possible.
When laying out the PCB, it is advisable to keep the audio circuit away from the VBAT line and
The positive and negative PCB tracks of speaker and microphone should keep in parallel all
Avoid routing any digital line or power line underneath audio lines as shown hereunder. Figure 28 Avoid placing digital line underneath audio lines Design Document Rev 008 14 Mars 200611 Page 23 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. 4 Electrical, Reliability and Radio Characteristics The absolute maximum ratings stated in following table are stress ratings under non-operating conditions. Stresses beyond any of these limits will cause permanent damage to MGM-312E 4.1 Absolute maximum Ratings Symbol VBAT Vi Ii Io Parameter Power supply voltage Input voltage Input current Output current Min
-0.3 Typ Max 5.5 3.1 10 10 Unit V V mA mA 4.2 Recommended Operating Conditions Symbol VBAT Toper Tstg Parameter Power supply voltage Operating temperature Storage temperature Min 3.3
-40
-45 Typ 4.0
+25 Max 4.8
+85
+90 Unit V C C 4.3 Digital Interface Characteristics Symbol Iih Iil Vih Vil Voh Vol Parameter High level input current Low level input current High level input voltage Low level input voltage High level output voltage Low level output voltage Min
-10
-10 2.4 2.7 Typ Max 10 10 0.4 0.1 Unit uA uA V V V V 4.4 SIM Card Interface Characteristics Symbol Iih Iil Vih Vil Voh Vol Parameter High level input current Low level input current High level input voltage Low level input voltage High level output voltage Low level output voltage Min
-10
-10 1.4 2.4 1.7 2.7 Typ Max 10 10 0.4 2.4 0.1 0.1 Unit uA uA V V V V V V V V 4.5 VRTC Characteristics Symbol Vrtc-in Parameter VRTC input voltage Min 2.5 Typ 3.0 Max 3.3 Unit V Design Document Rev 008 14 Mars 200611 Page 24 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design VRTC input current VRTC output voltage VRTC output current Copyright by MTH. All rights reserved. Irtc-in Vrtc-out Irtc-out 4.6 Current Consumption (VBAT = 3.8V) 2 3.0 10 uA V uA Symbol IVBAT Parameter VBAT current Conditions Power down mode Sleep mode Voice call MFS = 9 MFS = 5 MFS = 2 GSM 850 EGSM 900 DCS 1800 PCS 1900 Data mode GPRS[1Rx, 1Tx]
GSM 850 EGSM 900 DCS 1800 PCS 1900 Data mode GPRS[4Rx, 1Tx]
GSM 850 EGSM 900 DCS 1800 PCS 1900 Data mode GPRS[3Rx, 2Tx]
GSM 850 EGSM 900 DCS 1800 PCS 1900 Data mode GPRS[1Rx, 4Tx]
GSM 850 EGSM 900 DCS 1800 PCS 1900 Data mode EDGE[4Rx, 1Tx]
GSM 850 EGSM 900 DCS 1800 PCS 1900 Data mode EDGE[3Rx, 2Tx]
GSM 850 EGSM 900 DCS 1800 PCS 1900 Data mode EDGE[1Rx, 4Tx]
GSM 850 EGSM 900 PCL=5 PCL=12 PCL=19 PCL=0 PCL=7 PCL=15 PCL=5 PCL=12 PCL=19 PCL=0 PCL=7 PCL=15 PCL=5 PCL=12 PCL=19 PCL=0 PCL=7 PCL=15 PCL=5 PCL=12 PCL=19 PCL=0 PCL=7 PCL=15 PCL=5 PCL=12 PCL=19 PCL=0 PCL=7 PCL=15 PCL=5 PCL=12 PCL=19 PCL=0 PCL=7 PCL=15 PCL=5 PCL=12 PCL=19 PCL=0 PCL=7 PCL=15 PCL=5 PCL=12 Value 40 1.6 2.1 3.5 250 110 80 180 94 76 235 102 74 190 90 70 273 145 120 205 130 110 440 185 125 320 155 120 Unit uA mA mA mA mA mA mA mA mA mA mA Design Document Rev 008 14 Mars 200611 Page 25 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design DCS 1800 PCS 1900 PCL=19 PCL=0 PCL=7 PCL=15 2 mA A Peak current During Tx bust IVBAT-peak 4.7 ESD (Electro-Static Discharge) Contact discharge VBAT/GND 5KV Board-to-Board Connector 2KV Note: Temperature: 25C, Humidity: 45%
4.8 Radio Characteristics Air discharge 10KV 8KV Max The following table shows the module conducted output power, it is followed by the 3GPP TS 05.05 technical specification requirement. MGM-312E module conducted RF output power:
For the modules output power, the following should be noted:
At EGSM900 and GSM850 band, the module is a class 4 device, so the modules output power should not exceed 33dBm. At DCS1800 and PCS1900 band, the module is a class 1device, so the modules output power should not exceed 30dBm. Frequency GSM/GPRS GSM850/EGSM900 DCS1800/PCS1900 EDGE GSM850/EGSM900 DCS1800/PCS1900 MGM-312E module RF Receiver Sensitivity:
The following table shows the modules conducted receive sensitivity, it is tested under static condition. Frequency GSM 850 EGSM 900 DCS 1800 PCS 1900 Receive sensitivity (Max)
-109
-109
-109
-109 Receive sensitivity (Typ)
-108
-108
-108
-108 33dBm 2dB 30dBm 2dB 27dBm 2dB 26dBm 2dB 5dBm 5dB 0dBm 5dB 5dBm 5dB 0dBm 5dB Unit dBm dBm dBm dBm Min Design Document Rev 008 14 Mars 200611 Page 26 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. 5 Mechanics The following sections describe the mechanical dimensions of MGM-312E and give recommendations for integrating MGM-312E into the host application. 5.1 Mechanical Dimensions Figure 29 Top and Side mechanical dimension of MGM-312E (Unit: mm) Design Document Rev 008 14 Mars 200611 Page 27 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 30 Recommended PCB footprint outline (Unit: mm) 5.2 Install the MGM-312E onto the host device. There are many ways to properly install MGM-312E in the host device. An efficient approach is to mount the MGM-312E PCB to a frame, plate, rack or chassis. For proper grounding it is strongly recommended to use the ground plane on the back side in addition to the six GND pins of the board-to-board connector. To avoid short circuits ensure that the remaining sections of the MGM-312E PCB do not come into contact with the host device. To prevent mechanical damage, be careful not to force, bend or twist the module. Be sure it is positioned flat against the host device. Follow the steps below to properly install MGM-312E:
1) The board-to-board connector (section5.3) should be aligned before tightening. 2) Plug one end of the RF cable to the Hirose U.FL-R-SMT connector (section5.4) on the MGM-
312E module. Furthermore, in order to send or receive data, connect an external RF antenna to the SMA connector at the front of the host device. Design Document Rev 008 14 Mars 200611 Page 28 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. 5.3 Board-to-board connector Use the connector AXK6F60347YG (vended by PANASONIC) to fix the MGM-312E onto the customer platform. http://www.panasonic-electric-works.se/pewn/en/html/boardtoboard_connectors.php Figure 31 AXK6F60347YG board-to-board connector Design Document Rev 008 14 Mars 200611 Page 29 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 32 AXK6F60347YG PCB footprint outline (Unit: mm) 5.4 RF connector The RF connector in the MGM-312E module side is an ultra small surface mount connectors (Part Number: U.FL-R-SMT, vended by HRS). It has high performance with wide frequency range. http://www.hirose-connectors.com Design Document Rev 008 14 Mars 200611 Page 30 of 34 Copyright by MTH. All rights reserved. GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Figure 33 U.FL-R-SMT Figure 34 U.FL series RF adapter cable Design Document Rev 008 14 Mars 200611 Page 31 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. 5.5 Top View of the MGM-312E Figure 35 MGM-312E module Top view 5.6 PIN Assignment of MGM-312E Pin No. 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 I/O Pin name I VBAT I VBAT I VBAT I VBAT GND GND GND I/O VRTC O VDD_EXT O SIM_VDD I/O SIM_DATA O SIM_CLK SIM_RST O ROW0/GPIO54/I2C1_SDA I/O ROW1/GPIO53/I2C1_SCK I/O I ROW2/GPIO60/EXTINT15 I/O ROW3/GPIO19 I/O ROW4/GPIO18 I/O COL0/GPIO49/HS_DET I/O COL1/GPIO55/I2C2_SDA COL2/GPIO56/I2C2_SCK I/O COL3/GPIO16/DBG_CTS O I COL4/GPIO14/DBG_RTS I DBG_RXD/GPIO15 DBG_TXD/GPIO17 O GND I MIC1P I MIC1N MIC2P I I MIC2N Pin No. 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 Pin name VBAT VBAT VBAT VBAT GND GND GND SIM_PRESENCE DISP_DATA/USB_DP DISP_CLK/USB_DM DISP_CS DISP_DC/USB_DET DISP_RST DCD NETLIGHT GPIO0/BOOT PWRKEY BUZZER DTR RXD TXD RTS CTS RI GND ADC0 SPK1P SPK1N SPK2P SPK2N I/O I I I I I I/O I/O O I O O O I I O I I O I O O I O O O O Design Document Rev 008 14 Mars 200611 Page 32 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. Note: The red signal of multiplexed signals is only supporting on standard firmware by the default value. 6 Regulatory Notes The conducted power of module is 31.17dBm [850 MHz] and 28.11dBm [1900MHz]. And, the maximum antenna gains to comply with RF exposure and radiated power limits are 5.9dBi [850MHz]
and 4.9dBi [1900MHz]. FCC Radiation Exposure Statement:
This device complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. To comply with FCC RF exposure compliance requirements, the antenna used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This device is intended only for OEM integrators under the following conditions:
1) The antenna must be installed such that 20 cm is maintained between the antenna and users. 2) The transmitter module may not be co-located with any other transmitter or antenna. As long as 2 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). IMPORTANT NOTE:
In the event that these conditions cannot be met (for example, co-location with another transmitter), then the FCC authorizations are no longer considered valid and the FCC ID cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining separate FCC authorizations. INFORMATION TO USER:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio Frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced technician for help. Design Document Rev 008 14 Mars 200611 Page 33 of 34 GSM/GPRS/EDGE Module(MGM-312E) Preliminary Hardware Design Copyright by MTH. All rights reserved. 7 Document History Revision Date 001 14 Sep 11 Change Description Creation Author Contact us:
MTH Inc. Add: 10F, Mtek IT Tower, 688-1, Sampyeong-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea Tel: +82-31-627-0300 Fax: +82-31-627-0303 URL: www.mth-modem.com Design Document Rev 008 14 Mars 200611 Page 34 of 34
frequency | equipment class | purpose | ||
---|---|---|---|---|
1 | 2012-02-28 | 1850.2 ~ 1909.8 | PCB - PCS Licensed Transmitter | Original Equipment |
app s | Applicant Information | |||||
---|---|---|---|---|---|---|
1 | Effective |
2012-02-28
|
||||
1 | Applicant's complete, legal business name |
MTH Inc.
|
||||
1 | FCC Registration Number (FRN) |
0021427273
|
||||
1 | Physical Address |
10F, Mtek IT Tower, 688-1, Sampyeong-dong, Bundang
|
||||
1 |
Seongnam-si, 463-400
|
|||||
1 |
South Korea
|
|||||
app s | TCB Information | |||||
1 | TCB Application Email Address |
c******@ccsemc.com
|
||||
1 | TCB Scope |
B1: Commercial mobile radio services equipment in the following 47 CFR Parts 20, 22 (cellular), 24,25 (below 3 GHz) & 27
|
||||
app s | FCC ID | |||||
1 | Grantee Code |
A7X
|
||||
1 | Equipment Product Code |
MGM-312E
|
||||
app s | Person at the applicant's address to receive grant or for contact | |||||
1 | Name |
S******** K******
|
||||
1 | Title |
Chief Manager
|
||||
1 | Telephone Number |
82-31********
|
||||
1 | Fax Number |
82-31********
|
||||
1 |
k******@mth-modem.com
|
|||||
app s | Technical Contact | |||||
n/a | ||||||
app s | Non Technical Contact | |||||
n/a | ||||||
app s | Confidentiality (long or short term) | |||||
1 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
1 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
1 | Is this application for software defined/cognitive radio authorization? | No | ||||
1 | Equipment Class | PCB - PCS Licensed Transmitter | ||||
1 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | GSM/GPRS/EDGE module | ||||
1 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
1 | Modular Equipment Type | Single Modular Approval | ||||
1 | Purpose / Application is for | Original Equipment | ||||
1 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | No | ||||
1 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
1 | Grant Comments | Power output listed is conducted. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter within a host device, except in accordance with FCC multi-transmitter product procedures. Antenna gain including cable loss must not exceed 5.9 dBi in Cellular 800MHz band and 4.9 dBi in PCS 1900MHz band for purposes of 2.1043 and 2.1091 and to comply with erp/eirp limits. OEM integrators must be provided with antenna installation instructions. OEM integrators and end-users must be provided with transmitter operation conditions for satisfying RF exposure compliance. Compliance of this device in all final product configurations is the responsibility of the Grantee. Installation of this device into portable final products requires the submission of a Class II permissive change application, where appropriate containing data demonstrating compliance for SAR, MPE, spurious emissions, ERP/EIRP, and host/module authentication, or new application. | ||||
1 | Is there an equipment authorization waiver associated with this application? | No | ||||
1 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
app s | Test Firm Name and Contact Information | |||||
1 | Firm Name |
Korea Testing Laboratory
|
||||
1 | Name |
Y****** K****
|
||||
1 | Telephone Number |
82-2-********
|
||||
1 | Fax Number |
82-2-********
|
||||
1 |
k******@wm.ktl.re.kr
|
|||||
Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
1 | 1 | 22H | 824.2 | 848.8 | 1.309 | 2.5 ppm | 249K3GX | ||||||||||||||||||||||||||||||||||
1 | 2 | 24E | 1850.2 | 1909.8 | 0.647 | 2.5 ppm | 245K8GX |
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC