Shure Incorporated 222 Hartrey Avenue Evanston IL 60202-3696 U.S.A. Model P4T Transmitter Users Guide P4T Transmitter
1999, Shure Incorporated 27A8712 (SC) Printed in U.S.A. USING THIS SYSTEM AT EXCESSIVE VOLUMES CAN CAUSE PERMANENT HEARING DAMAGE. USE AS LOW A VOLUME AS POSSIBLE. WARNING!
In order to use this system safely, avoid prolonged listening at excessive sound pressure levels. Please use the following guidelines established by the Occupational Safety Health Administration (OSHA) on maximum time exposure to sound pressure levels before hearing damage occurs. 90 dB SPL at 8 hours 95 dB SPL at 4 hours 100 dB SPL at 2 hours 105 dB SPL at 1 hour 110 dB SPL at 1/2 hour 115 dB SPL at 15 minutes 120 dB SPL avoid or damage may occur It is difficult to measure the exact Sound Pressure Levels (SPL) present at the eardrum in live applications. In addition to the volume setting on the PSM, the SPL in the ear is affected by ambient sound from floor wedges or other devices. The isolation provided by the fit of quality earpieces is also an important factor in determining the SPL in the ear. Here are some general tips to follow in the use of this product to protect your ears from damage:
1. Turn up the volume control only far enough to hear properly. 2. Ringing in the ears may indicate that the gain levels are too high. Try lowering the gain levels. 3. Have your ears checked by an audiologist on a regular basis. If you experience wax buildup in your ears, stop using the system until an audiologist has examined your ears. 4. Wipe the ear molds with an antiseptic before and after use to avoid infections. Stop using the earphones if they are causing great discomfort or infection. This symbol indicates that dangerous voltage constituting a risk of electric shock is present within this unit. This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit. FCC Statement. The P4R Receiver complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device does not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Licensing Statement. A user license may be required for operation. Contact the com-
munications authority in your country for more information. Modifications to Approved Equipment. Changes or modifications not expressly ap-
proved by Shure Brothers Incorporated could affect compliance with telecommunications standards, thereby voiding the users authority to operate this product. Introduction Thank you for buying the P4T Transmitter. The P4T is a component in the PSM400 family of wireless personal monitors. When used in conjunction with a P4R Receiver, it provides the many advantages of an inear monitoring system, including:
Improved Sound Quality - high fidelity without the risk of feedback, Increased Mobility - your mix moves with you, Personal Control - through volume adjustment and MixMode. This users guide covers the use and features of the P4T Transmitter. For further instruction on the use of the PSM400 system, see the PSM400 system users guide, availaible on the web at www.shure.com. P4T Transmitter Features 2 1 3 4 5 6 Front Panel 7 Back Panel 8 9 1. 2. 3. Local Earphone Output Jack (1/8 inch): Connects to E1 or E5 earphones. Local Earphone Level Control: This knob adjusts the volume of the local earphone jacks amplifier. Always listen at low levels. Input Level LEDs: Two vertical strings of four LEDs display the input level of the left and right input channels. The four LEDs on the left displays the status of the signal from channel 1 and the four LEDs on the right displays the status of the signal from channel 2:
LED RED (top) Signal Status Limiter Active YELLOW (middle) Nominal Level GREEN (bottom two) Signal Present Set Up and Operation Follow these directions to set up the P4T for operation. 1. Plug the power cord into the P4Ts 12 VDC locking power connec-
tor. Plug the other end of the power cord into a wall outlet. 2. Connect line level outputs of an audio source into the audio inputs of the P4T transmitter. Use both of the P4Ts input jacks for a two-channel source. Use either input jack for a mono source. The P4T Transmitter will transmit in MixMode/Stereo if both inputs are used, but will automatically transmit in mono if only one input is used. NOTE: All inputs are phantom power protected up to 50 VDC. 4. 5. 6. 7. 8. 9. 3. Frequency Select LED: This indicates which of the 16 Chan-
nels (0 - 9 and A - F) is selected. Frequency Select Button: This recessed button allows the transmission channel to be changed. To use, hold down the button until the desired channel number is displayed in the LED. Release the button and the number will flash. Quickly push and release the button again to confirm changes. Front-Mounted Antenna: The units antenna is permanently attached and break-resistant. Loop Out Jacks: Two 1/4 TRS jacks allow the audio signal to pass through the transmitter to other devices, such as other transmitters, tape recorders, or amplifiers. Input Jacks: Two 1/4 TRS Switching Jacks for line level audio inputs. If only one input is used, the signal will be routed to both sides of the modulator for Mono operation. If both Jacks are used, the signals will be transmitted in Stereo/MixMode. 12VDC Locking Connector: Input for PS40 Power Cord. Select an operating frequency using the Frequency Select Button. The selected frequency will be displayed in the LED. IMPORTANT: Never set more than ONE transmitter to the same operating frequency. 4. Once audio is being transmitted by the P4T, observe the Input Level LEDs. If the input signal is consistently causing the red LED to illuminate, decrease the output level of the audio source until the red LED only flickers occasionally. 5. Set up the P4R receiver as directed in the P4R users guide, making sure that the frequency selected on the receiver matches the frequency selected on the transmitter. LOOP Applications The LOOP OUT L (left) and R (right) outputs allow the signal going through the P4T to be routed to other devices. The LOOP feature of the P4T can be used for any number of applications. Shown here are only a few examples of how it can be used. MIXER P4T Transmitter Floor Monitor Amplifier P4R Receiver Running Floor Monitors Through a P4T Transmitter An audio signal can be sent through the LOOP connectors to an amplifier for an onstage monitor system. When setup this way, the P4R and the onstage monitors will reproduce the same audio. BAND MIX SOLO MIX SOLO MIX SOLO MIX BAND MIX BAND MIX MONITOR MIX MIX OUT 1 MONITOR MIX MIX OUT 2 MONITOR MIX MIX OUT 2 Running Multiple PSM Wireless Systems Under MixMode Control A single mono monitor mix can be sent to multiple P4T transmitters, then independent monitor mixes or direct outputs can be sent to the second channel of each. This will allow an entire band to hear the same monitor mix, while giving each individual player a separate mix of their own. Each player can then use the balance control to adjust the levels between their own mix and the main mono monitor mix. NOTE: See the P4M and PSM400 Users Guides for forther information on this feature. AUDIO IN MONITOR MIX MIX OUT 1 MIX OUT 2 AUDIO OUT TO FRONT-OF-HOUSE MONITOR MIX MONITOR MIX MONITOR MIX MIX OUT 1 MONITOR MIX MIX OUT 2 Running Two PSM Wireless Systems Under MixMode Control From a P4M Mixer When using the P4T in conjunction with a Shure P4M Mixer, a single mono monitor mix can be sent unaltered to two P4Ts. Each P4T can also receive a seperate Mix Out signal, providing each P4T with a common monitor mix and a custom mix created by the P4M. The balance control on the P4R receiver is used to adjust the levels betwen the monitor mix and the P4M mix. Running a Recording Device Through a P4T Transmitter If you would like to make a recording of a performance, the LOOP outputs can be connected to the inputs of a tape deck, DAT, or other recording device. SPECIFICATIONS RF Output Power 50 mW (+17 dBm) typical conducted (country dependent) Modulation Limiter Internal peak limiter (>10:1 compression) Antenna 1/4 Wavelength, semi-rigid, PCB Mount Power Requirements Table-Top AC Adaptors P4T: (Input: 120 Vac, 60Hz, 14w; Output: 15 Vdc, 600 mA, 9w) EP4T: (Input: 230 Vac, 50 Hz/60Hz; Output: 15 Vdc, 600 mA, 9w) Current 220 mA maximum Dimensions Net Weight 907.2 g (2 lbs., 0 oz.) 219.2 mm X 43.6 mm X 136.5 mm (8.6 in. X 1.7 in. X 5.4 in.) CONNECTORS P4T Audio Inputs (LEFT/CH.1 and RIGHT/CH.2) Connector Type:
Configuration:
Actual Impedance:
Nominal Input Level:
Maximum Input Level:
Pin Assignments:
Phantom Power Protection?
1/4-inch phone jack
(female) TRS electronically balanced XX kW XX dBV
(10 input level)
+X dBu
(+4 input level)
+XX dBu
(10 input level) Tip = hot ring = cold sleeve = ground Yes Up to 60 VDC P4T L/R LOOP Outputs (IN and OUT) Connector Type:
1/4-inch jack (female) TRS Configuration:
Actual Impedance:
Nominal Input Level:
Maximum Input Level:
Pin Assignments:
Phantom Power Protection?
electronically balanced XX kW XX dBV
(10 input level)
+XX dBu
(+4 input level)
+XX dBu
(10 input level) Tip = hot ring = cold sleeve = ground Yes Up to 60 VDC RACK MOUNTING THE P4T The P4T features a 1/2-rack chassis specially designed for sturdiness. The sagging and bending found in most 1/2-rack designs is eliminated the brackets and straddle bars are designed to ensure that the units will be installed securely. WARNING: Do not torque the screws too tightly, or the chassis may be damaged. Single Unit Dual-Mounted Units NOTE: Be sure to use both straddle bars when installing dual units. Mounting in an Equipment Rack