Function Description SP-7402 Function Description 2007-08-03 1/32 Synthesized Scanning Radio FCC RF EXPOSURE COMPLIANCE REQUIREMENTS FOR OCCUPATIONAL USEONLY The Federal Communications Commission (FCC), with its action in General Docket 93-62, November 7,1997, has adopted a safety standard for human exposure to Radio Frequency (RF) electromagnetic energy emitted by FCC regulated equipment. Maxon subscribes to the same safety standard for the use of its products. Proper operation of this radio will result in user exposure far below the Occupational Safety and Health Act (OSHA) and Federal Communications Commission limits. DO NOT transmit for more than 50% of total radio use time (50% duty cycle). Transmitting more than50% of the time can cause FCC RF exposure compliance requirements to be exceeded.
This radio is NOT approved for use by the general population in an uncontrolled environment. This radio is restricted to occupational use, work related operations only where radio operator must have the knowledge to control the users exposure conditions for satisfying the higher exposure limit allowed for occupational use.
When transmitting, hold the radio in a vertical position with its microphone 2 inches (5 cm) away from your mouth. The radio is transmitting when the red LED on the front of the radio is illuminated. You can cause the radio to transmit by pressing the PTT bar on the radio.
These are required operating configurations for meeting FCC RF exposure compliance. Failure to observe these restrictions mean violation. Safety Information The Federal Communications Commission (FCC), with its action in General Docket 93-62, March 13, 1997, has adopted a safety standard for human exposure to Radio Frequency (RF) electromagnetic energy emitted by FCC regulated equipment. Maxon subscribes to the same safety standard for the use of its products. Proper operation of this radio will result in user exposure far below the Occupational Safety and Health Act and Federal Communications Commission limits. WARNING - DO NOT hold the radio in such a manner that the antenna is next to, or touching, exposed parts of the body, especially the face or eyes, while transmitting. WARNING - DO NOT allow children to operate transmitter - equipped radio equipment. CAUTION - DO NOT operate the radio near unshielded electrical blasting caps or in an explosive atmosphere unless it is a type especially designed and qualified for such use. CAUTION - DO NOT press and hold the transmit switch (P-T-T) when not actually wishing to transmit. NOTE: This radio operates in FCC regulated frequency bands. All radios must be licensed by the FCC before use. Because this radio contains a transmitter, Federal law prohibits unauthorized use or adjustments of this radio. Function Description SP-7402
(1)
(2)
(3)
(4)
(5) Table of Contents 1. Panel Description ................................................................................................................ 4
(1) Front Panel................................................................................................................. 4
(2) LCD Display ............................................................................................................... 5
(3) Display Option ........................................................................................................... 6 2. Basic Functions................................................................................................................... 7
(1) Power On/Off & Volume Control .............................................................................. 7
(2) Receiving and Transmitting ..................................................................................... 8
(3) User Set Mode ......................................................................................................... 15 3. Emergency Function ......................................................................................................... 16 To transmit Emergency Call................................................................................... 16 Effect......................................................................................................................... 16 Emergency ID .......................................................................................................... 17 Formation of the Emergency Call.......................................................................... 17 Emergency Call Options......................................................................................... 17 4. Scan Function .................................................................................................................... 18
(1) Description............................................................................................................... 18
(2) Scan Type................................................................................................................. 18
(3) Nuisance Delete....................................................................................................... 18 Scan List Edit........................................................................................................... 19
(4)
(5) Priority Channel / Lookback Channel Setting ...................................................... 19 TX Channel on Scan................................................................................................ 19
(6)
(7) Scan Operation Diagram ........................................................................................ 20 5. Signaling Function ............................................................................................................ 21 Signaling Type & Transmission ............................................................................. 21 Signaling Functions and Receiving ...................................................................... 23 Signaling Operation Example ................................................................................ 26 5-Tone Table............................................................................................................. 28 6. Other Functions................................................................................................................. 29
(1) Memory Channel ..................................................................................................... 29
(2) Battery Indication.................................................................................................... 29
(3) Key Lock .................................................................................................................. 30
(4) Transceiver Lock..................................................................................................... 30
(5) Compander............................................................................................................... 30 Scramble .................................................................................................................. 30
(6)
(1)
(2)
(3)
(4) 2/32 Function Description SP-7402
(7) Man Down ................................................................................................................ 31
(8) Lone Worker ............................................................................................................ 31 7. Function List & User Set Mode Function ........................................................................ 32 3/32 Function Description SP-7402 1. Panel Description
(1) Front Panel 12 3 4 5 6 7 8 9
No. 1 2 3 4 5 Description Power On/Off, Volume Control S/W Rotary Selector Emergency Button Monitor Button PTT Key No. 6 7 8 9
Description Up/Down / Select Button LED Indicator LCD Display Default Programmable Keys Optional 10-keypad 4/32 Function Description SP-7402
(2) LCD Display
Description CH, Group, Name, Message etc. Display Digit Scroll Indicator RSSI Indicator Monitor Indicator VOX On/Off Indicator Scrambler On/Off Indicator Compander On/Off Indicator Bell Indicator Call Indicator Key Lock On/Off Indicator Battery Gauge
No.
Display Example) Ex) Group-Channel Display Ex) Channel Display Priority Channel Indicator Lookback Channel Indicator Ex) Name Text Display Ex) Scroll 5/32 Function Description SP-7402
(3) Display Option 1) Display Type
- Channel Name Display
Display only Channel Name when this type is selected.
Display the Group Number for a second when Group is changed.
Scrolls when the name is more than 7 characters
- Channel Number Display
Display only Channel Number when this type is selected.
Display the Group Number for a sec when Group is changed.
- Group / Channel Number Display
Display Group & Channel Number when this type is selected.
- Group / Channel Name Display
Display Group & Channel Name when this type is selected.
Display / between Group and Channel Name as a descriptor.
Scrolls when the name is more than 7 characters 6/32 Function Description SP-7402 2. Basic Functions
(1) Power On/Off & Volume Control 1) Power On/Off To turn on the radio, rotate the volume knob clockwise beyond detent. To turn off the radio, rotate the volume knob the most counter-clockwise beyond detent. Ex) Power On 2) Power On Sequence
Initialization & Self Test Initialization and self test are performed when the radio is turned on. At this time, if some errors occur, error message shall be displayed. Ex) EEPROM Error
- Power On Beep Generation (Option) Beep sounds out after success of Initialization and Self Test.
(Depends on Beep Option) 7/32 Function Description SP-7402
- Display Start Logo (Option) Display the Start Logo for a second. If there is no predefined start logo, all digits and icons will be displayed for a second. Ex1) Start Logo Ex2) Non Start Logo
- Password Check (Option) Password function is the function that the user who knows the password can use the radio. (Depends on password option) Password can be consisted of 1 to 4 numerical digits. In case of the radio with 10-keypad, 10-keypad can be used to input the password.
* Usage of keys for inputting password
: Confirm (Enter)
: Delete (Error Beep out if there is no digit to delete.
: Confirm (Enter)
: Digit Value Change
: Next Digit
: Delete
(2) Receiving and Transmitting 1) Receiving
- Channel & Group Selection
Group Selection Rotary Selector Rotary Selector can be used to select each group up to 16. If blank group is selected, the radio keeps the last used channel status. 8/32 Function Description SP-7402 Programmable Key To select the group up or down direction, push the programmed key. If there are blank groups within the total groups, the blank group is skipped automatically when group is changing.
Channel Selection Rotary Selector Rotary Selector can be used to select channel up to 16. If blank channel is selected, the radio keeps last used channel status. Programmable Key Push to select the channel up or down direction. If there are blank channels within the total channels, the blank channel is skipped automatically when channel is changing.
- Busy Busy Status: When receiving a call Amber color LED turns on in busy status. Ex) LED Display 9/32 Function Description SP-7402
- Correct Call Correct Call Status: When proper CTCSS tone or DCS code is decoded. Green color LED turns on in correct call status
- Monitor Operating Release squelch and tone option to check whether you can use or not current channel. Mode Push Mode Hold Mode Description Push and hold the key in short time, to enter to monitor push mode. Squelch and tone option are released while push and hold the key. To return to normal mode, release the monitor key. Push and hold the key in long time, to enter to monitor hold mode. After a confirm beep, monitor operation is held even if the key is released. To return to normal mode, push and release the monitor key once more. Display Ex. Monitor On Indicator Group Channel Display Channel Display 10/32 Function Description SP-7402
- RSSI (Received Signal Strength Indication) This function is to indicate the received signal strength. Display Ex. Signal Strength
- Receiving Option
Squelch Level Control Squelch level is adjustable 1 to 9 step by PC Program or User Set Mode.
Sub-Audio Tone CTCSS The radio has a CTCSS tone squelch function which consists of 38 standard tones and 12 non-standard tones. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 Freq. 167.9 173.8 179.9 186.2 192.8 203.5 210.7 218.1 225.7 233.6 241.8 250.3 69.4 Freq. 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 162.2 Freq. 67.0 71.9 74.4 77.0 79.7 82.5 85.4 88.5 91.5 94.8 97.3 100.0 103.5 Freq. 159.8 165.5 171.3 177.3 183.5 189.9 196.6 199.5 206.5 229.1 254.1 No. 14 15 16 17 18 19 20 21 22 23 24 25 26 No. 27 28 29 30 31 32 33 34 35 36 37 38 39 No. 40 41 42 43 44 45 46 47 48 49 50 11/32 Function Description SP-7402 DCS (IDCS) The radio also has a digital coded squelch function which consists of 104 codes. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Code 023 025 026 031 032 036 043 047 051 053 054 065 071 072 073 074 122 114 115 116 125 131 132 134 143 145 No. 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 Code 152 155 156 162 165 172 174 205 212 223 225 226 243 244 245 246 251 252 255 261 263 265 266 271 274 306 No. 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 Code 311 315 325 331 332 343 346 351 356 364 365 371 411 412 413 423 431 432 445 446 452 454 455 462 464 465 No. 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 Code 466 503 506 516 523 526 532 546 565 606 612 624 627 631 632 654 662 664 703 712 723 731 732 734 743 754
Signalling (2-Tone, 5-Tone, DTMF)
There are three type audio-band tone signaling. Refer to Signaling section.
Tone Squelch Option Tone Squelch 1 (On/Off) All Tone Squelch On/Off (Sub-Audio, 2-Tone, 5-Tone, DTMF) Display Ex.) Display tone squelch status for a second when the status is changed. 12/32 Function Description SP-7402 Tone Squelch 2 (On/Off) Only audio-band tone squelch(2-Tone, 5-Tone, DTMF Squelch) On/Off Display Ex.) Display the tone squelch status for a second when the status is changed. 2) Transmitting
PTT Key Push the PTT (Push To Talk) key to transmit.
VOX function (Voice Operated Transmit) This function is to transmit by voice without pressing the PTT key. The radio can transmit by low and high level voice in accordance with VOX level 1 to 4.
- Transmit Option
PTT ID When transmission is starting, PTT ID which consists of DTMF or 5-
tone depend on system and signaling option can be transmitted.
TX Power High/Low Control Each channel can be capable of programmable output power via PC programmer. Each channel can be programmed high or low transmit power.
TOT (Time Out Timer) This function is to prevent continuous transmitting over than specified time that is programmed via PC programmer.
BCLO (Busy Channel Lock-Out) This function is to prevent transmitting when current channel is in busy status. 13/32 Function Description SP-7402
Marked Idle This option allows transmitting when current channel is in correct call status even if BCLO option is applied.
TX Delay This function is to eliminate the squelch tail on leaving transmission. The radio transmits the turn off code (or tone) and return to receive mode after the PTT key is released.
Roger Beep When this option is on, beep sound shall be transmitted after the PTT key is released.
Clear to Talk This function is to inform that voice can be transmitted without a loss. When PTT key is pushed beep sounds out after specified clear time.
- Talk Around
This function allows communicating directly with other radios without the use of a repeater.
When using this function, the receive frequency is used for both transmitting and receiving.
This function shall be off automatically, when the channel is changed.
Display Ex. 3) Power Save If this function is activated, the power save function will decrease the amount of using power when current channel is no busy status and no operations are being performed. 14/32 Function Description SP-7402
(3) User Set Mode 1) This mode is to set internal settings that are not changed very often. 2) Setting
- Push the User Set Mode key to enter the User Set Mode.
- To select item: User Set Mode Key
- To change value of the item: Up/Down Key
- Exit without Save: Monitor Key (or after 10 seconds without key input)
- Save & Exit: PTT Key
Items List
Beep
LCD Back Light
VOX
TOT
Squelch Level
MIC Sense
Compander On/Off 15/32 Function Description SP-7402 3) Setting Ex. 3. Emergency Function
(1) To transmit Emergency Call Push and hold the emergency key to transmit emergency call. (Push and hold the emergency key once more to exit this function.)
(2) Effect 1) Alert tone 2) Backlight Blinking (one second interval) 16/32 Function Description SP-7402
(3) Emergency ID This ID consists of DTMF codes.
(4) Formation of the Emergency Call Sender TX Effect(Option) ID(Option) MIC Mute MIC Unmute Receiver RX RX MIC Mute TX / RX EMG Call Start TX RX RX TX TX Time RX Time
(5) Emergency Call Options 1) Cycle: The number of repetition 2) The number of repetition of Alert Tone 3) RX Time: Time for receiving 4) TX Time: Time for transmitting 5) Channel Type: Fixed Channel / Current Channel 17/32 Function Description SP-7402 4. Scan Function
(1) Description This function is to monitor a number of channels or channels within a group that are defined in the scan list.
(Note: Start re-scanning when turning power on if the radio turned off while scanning)
(2) Scan Type 1) Normal Scan: If there is no predefined priority channel, Normal Scan shall be running. 2) Priority Scan: If the radio has a predefined priority channel, Priority Scan will be running. In this case priority channel is checked every three normal channel scanning. 3) Power On Scan: When turning power on, the radio automatically starts scanning. 4) Look Back Scan: When using priority scan, the radio will automatically change to the priority channel when a call is received on the lookback channel. If the priority channel is not correct call status, return to lookback channel. After lookback interval time, the radio will repeat the above operation.
If the priority channel is correct call status, look back scanning will be stopped and the radio receive a call until the priority channel will be not correct call status.
(3) Nuisance Delete This function is to temporarily delete a channel from the scan list. 1) How to use: Push the monitor key while scanning and stopped on the channel to be deleted. 2) Note: The original scan list is recovered when the radios power is reset. 18/32 Function Description SP-7402
(4) Scan List Edit 1) You can use the Scan List Edit Key to add or delete. 2) Display The Scan List Add Indicator
(5) Priority Channel / Lookback Channel Setting 1) You can set Priority Channel / Lookback Channel using the each setting key. 2) Display Priority Channel Indicator Lookback Channel Indicator
(6) TX Channel on Scan Transmission channel during scan Scan Type Priority Scan Normal Scan TX Option Priority Scan TX Priority Only TX Normal Scan TX RX Only TX Busy Current Ch. Priority Ch. Current Ch. TX Inhibition No Busy Priority Ch. Priority Ch. TX Inhibition TX Inhibition 19/32 Function Description SP-7402
(7) Scan Operation Diagram Current Group Group x Group y Scan Channel Non-scan Channel Current Group Group x Group y Scan Channel Non-scan Channel Current Group P 1 2 3 4 5 6 7 8 Scan Channel Non-scan Channel Scan Order: P 2 3 6 P 8 P 2 P ... 20/32 Function Description SP-7402 5. Signaling Function
You can select signalling type of each channel. Especially 5-tone case, you can select and set the format of the tone. (for example: ZVEI1, PZVEI, EEA, CCIR1 etc.)
You can select the sending signal code in the TX Code List which depends on the signaling type of each channel.
In DTMF case, push the PTT key to send the code after inputting or selecting.
In 2-Tone and 5-Tone case, push the Call key to send the code after inputting or selecting. (Note: The Call Key must be programmed to send 2-tone or 5-tone code.)
(1) Signaling Type & Transmission 1) DTMF
- Transmission
Manual Dial: To send the DTMF codes press the numerical key with programmable key while pressing the PTT key. 0 ~ 9, *, #
P0: A tone P1: B tone P2: C tone P3: D tone
Store and Send: Push the PTT key after finishing the DTMF codes input. PTT: Code Save & Send Monitor: Cancel (Exit without Save)
*: Special Tone Selection Mode I. II. III. P0: A tone IV. P1: B tone V. P2: C tone 21/32 Function Description SP-7402 VI. P3: D tone
#: Delete
TX Code Select & Enter PTT: Code Save & Send Monitor: Cancel (Exit without Save) Up / Down: Code Selection
Redial Redial Key: Display the recent sent DTMF code PTT: Send Monitor: Cancel (Exit) Note: Error beep out if there is no Redial Code. 2) 5-Tone
- Transmission
TX Code Select Mode TX Code Select & Enter Key: Enter to the TX Code Select Mode Up / Down Key: Select the code Call Key: Send the code
TX Code Enter Mode TX Code Select & Enter Key (in TX Code Select Mode): Enter to the TX Code Enter Mode Up / Down Key: Edit the code digit TX Code Select & Enter Key (in TX Code Enter Mode): Change the digit To return to the TX Code Select Mode push the TX Code Select
& Enter Key after the last code editing.
PTT Key: Save & Exit
Monitor Key: Cancel (Exit without Save)
Up / Down Code Select Mode: Code Selection Code Enter Mode: Digit Code Edit (0 ~ 9, *) 22/32 Function Description SP-7402 3) 2-Tone
- Transmission
TX Code Select & Enter PTT: Code Save & Send Monitor: Cancel (Exit without Save) Up / Down: Code Selection
(2) Signaling Functions and Receiving 1) ANI (DTMF & 5-Tone)
- Display the received code on the LCD.
- Display the alias text if the received code matches with one of the code in the RX Code List.
- Display time is 10 seconds. 2) Selcall (DTMF & 5-Tone)
- The radio will do the correspondent action if the received code matches with current channel ID.
- Action ICON: Icon Blink Effect
LED: LED(Amber Color) Blink Effect
Alert Tone: Alert Beep Effect
Squelch: Squelch Effect 3) Code Match Operation
- The radio will do the correspondent action if the received code matches with one of the code in the RX Code List.
LED: LED(Amber Color) Blink Effect
Alert Tone: Alert Beep Effect
Squelch: Squelch Effect ICON: Icon Blink Effect 23/32 Function Description SP-7402
Stun When receiving the Stun Code display the stun message until the stun mode is released. All keys are disabled except the EMG key. (Only Emergency Call and receiving are possible.) Key pressing except the EMG Key will make Error Beep.
Revive When receiving the Revive code in stun mode the radio return to normal mode. When releasing the Stun Mode Cancel Beep out and the revive message will be displayed on the LCD for a second.
Text: The text correspondent with the received code will be displayed, 4) Optional Functions
- Transponder: This function is to send the Alert Tone automatically when the received code matches with current channel ID.
- Auto Reset Time: After matching status(the received code matches with current channel ID or one of the codes in the RX Code List) if Auto Reset Time is elapsed with no busy status return to call standby status.
- Push the monitor key to return to call standby status before Auto Reset Time is elapsed. 24/32 Function Description SP-7402
- Remind Time: After matching status if there is no key input correspondent call icon will be blinked while reminding time.
Push any key to stop the icon blinking.
Receiving status will be displayed until any key input. DTMF Case 5-Tone, 2-Tone Case Display the correspondent text when the received code matches with one of the codes in the RX Code List. 25/32 Function Description SP-7402
(3) Signaling Operation Example 1) DTMF ANI: Displays the received DTMF code. Receiver2's DTMF RX Code List Code Name Actions 1 2 3 4 5 6 7 8 10001 10002 10003 10004 00001 00002 00003 00004 KIMYN RYUJG KIMY X SQL Open Alert ON KIMCG LED ON NOTHING BUSY READY COMEON X X X X Sender 10001 10001 Receiver 1 Receiver 2 Display "10001"
Display "KIMYN"
Command: Carries out designed actions if the transceiver receives a valid code. Receiver1's DTMF RX Code List Code Name KIMYN RYUJG Actions X SQL Open KIMY Alert ON, Icon Blink KIMCG LED ON NOTHING BUSY READY COMEON X X X X 1 2 3 4 5 6 7 8 10001 10002 10003 10004 00001 00002 00003 00004 Sender 10003 10003 10003 Receiver 1 Receiver 2 Receiver 3 Alert ON, Icon Blink No Response No Response Alert: Beeps out if the received DTMF code and Ch. ID are the same. Channel Data CH NO. Signaling CH ID Name Sender DTMF 10001 KIMYN DTMF 10002 RYUJG DTMF 10003 KIMY DTMF 10004 KIMCG DTMF 10005 TWR_SW DTMF 10006 TWR_HW CH 1 CH 2 CH 3 CH 4 CH 5 CH. 6 CH 7 CH 8 10005 10005 10005 CH 5 CH 5 CH 1 CH ID: 10005 CH ID: None CH ID: 10001 Alert ON No Response No Response 26/32 Function Description SP-7402 2) 5-Tone Group Call Channel Data No. 1 2 3 4 5 6 7 Signaling Type 5-Tone 5-Tone 5-Tone 5-Tone 5-Tone 5-Tone 5-Tone CH ID 10001 10002 10003 20001 20002 20003 30001 Sender CH. Name KIM RYU YONG KANG CHUNG JONG KWANG Group A Group B Group C 100AA 100AA 100AA KIM KANG KWANG Group Call Beep LCD Blink('Group') No Response No Response 27/32 Function Description SP-7402
(4) 5-Tone Table Tone ZVEI1 PZVEI DZVEI DDZVEI PDZVEI CCIR1 CCIR2 PCCIR EEA 0 1 2 3 4 5 6 7 8 9 A B C D E 2400 1060 1160 1270 1400 1530 1670 1830 2000 2200 2800 810 970 885 2600 Note 2400 1060 1160 1270 1400 1530 1670 1830 2000 2200 970 810 2800 885 2600 2200 970 1060 1160 1270 1400 1530 1670 1830 2000 825 740 2600 885 2400 2400 1060 1160 1270 1400 1530 1670 1830 2000 2200 885 810 740 680 970 2200 970 1060 1160 1270 1400 1530 1670 1830 2000 825 886 2600 856 2400 1981 1124 1197 1275 1358 1446 1540 1640 1747 1860 2400 930 2247 991 2110 1981 1124 1197 1275 1358 1446 1540 1640 1747 1860 2400 930 2247 991 2110 1981 1124 1197 1275 1358 1446 1540 1640 1747 1860 1050 930 2400 991 2110 1981 1124 1197 1275 1358 1446 1540 1640 1747 1860 1055 930 2400 991 2110 Euro signal 979.8 903.1 832.5 767.4 707.4 652.0 601.0 554.0 510.7 470.8
1062.9 NATEL 1633 631 697 770 852 941 1040 1209 1336 1477 1995 571 2205 2437 1805
- Group Tone: A (*)
- Repeat Tone: E
Example: 11111 1E1E1 28/32 Function Description SP-7402 6. Other Functions
(1) Memory Channel 1) Description
- You can memory channels that are frequently used up to 10 memory channels.
- Programmable key and 10-keypad can be used as a memory channel key. 2) Operation
In case of no 10-keypad, you can memory channels up to 4 memory channels. If you push the memory channel key, current channel will be changed to correspondent memory channel like as Direct Channel Function.
- When memory function is activated, the rotary selector position can be different from current memory channel information.
(2) Battery Indication 1) The battery indicator shows approximately how much charge is left. 2) Display (4-Step Display) 3) Low Battery
- Battery Icon will be blinked and warning beep out when the battery is low. Blinking the battery icon 4) Low Battery in Transmitting
If battery is low when transmitting, next transmission will be inhibited. 29/32 Function Description SP-7402
(3) Key Lock 1) All keys are locked except EMG, PTT and Rotary Selector.
- To release the key lock status, push the lock key once more. 2) Display of the Key Lock Status Key Lock Icon
(4) Transceiver Lock 1) This function is to prevent others from using the radio.
If you push the transceiver lock key, when the radio has no password Error Beep out and Error Message will be displayed.
(5) Compander 1) This function is to reduce noise components from the transmitting audio to provide clear voice quality. 2) Display: The compander icon appears when the function is on.
(6) Scramble 1) This function is to prevent others from easily listening your call. 2) Display: The scrambler icon appears when the scrambler is on. 30/32 Function Description SP-7402
(7) Man Down
Optional Function
(8) Lone Worker If there is no key input within the specified time, warning beep out while warning duration. If there is no key input while warning duration, emergency call is transmitted automatically. 31/32 Function Description SP-7402 7. Function List & User Set Mode Function Remark Controls the whole beep. Long Key Long Key Long Key Long Key Function None Backlight OFF / ON / AUTO Beep OFF / ON Call Channel Down Channel Up Compander OFF / ON Group Down Group Up Key Lock Lone Worker`
Lookback Channel Setting Man Down OFF / ON Memory Channel 1 Memory Channel 2 Memory Channel 3 Memory Channel 4 Priority Channel Setting DTMF Redial Scan List Setting Scan Start / Stop Scrambler OFF / ON Talk Around Tone Squelch1 Tone Squelch2 Transceiver Lock TX Code Select & Enter TX Power High / Low User Set Mode VOX OFF / ON Value 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Reserved Compander MIC Sense Squelch Lv. TOT VOX Backlight BEEP 32/32 Service Information Service Do not tamper with internal adjustments. Damage to the equipment and/or improper operation may result. There are no user serviceable items inside the radio. It is recommended that you return your radio to a qualified Maxon Dealer for any service or repairs. Recycling/Disposal of Batteries The battery should be recycled at the end of its useful life. Under various state or local laws, such batteries must be recycled or disposed of properly and cannot be dumped in landfills or incinerators. For jurther information on how to safely dispose of four used batteries, contact your reseller. Maintenance Your SP7402 Radio is designed to be maintenance free. To keep your radio in good working condition:
Clean external surfaces with a clean cloth dampened in a solution of dishwasher detergent diluted in water. Apply the solution sparingly to avoid any moisture leaking into cracks and crevices. Do not submerge the radio. Use a non-metallic brush to dislodge stubborn particles, if necessary. Dry the surface thoroughly with a soft, lint free cloth. DO NOT use solvents or spirits for cleaning - they may permanently damage the housing. Clean the battery contacts on the back of the radio with a lint free cloth to remove dirt, grease, or other foreign material that may impede good electrical contact. Limited Warranty Maxon shall have no obligation to make repairs or to cause replacement required which result from normal wear and tear or necessitated in whole or in part by catastrophe, fault or negligence of the user, improper or unauthorized alterations, repairs to the Product, use of the Product in a manner for which it was not designed, or by causes external to the Product. This warranty is void if the serial number is altered, defaced or removed. Maxon's sole obligation hereunder shall be to repair or replace the Product covered in the above warranty.