Lectrosonics PRO 4 CHANNEL Operating Instructions And Troubleshooting Manual

Multi channel wireless system with dm4/dm4d distribution module with dm4/dm4d distribution module

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PRO 4 CHANNEL
MULTI CHANNEL WIRELESS SYSTEM
WITH DM4/DM4D DISTRIBUTION MODULE
OPERATING INSTRUCTIONS
and trouble-shooting guide
LECTROSONICS, INC.
Rio Rancho, NM

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Summary of Contents for Lectrosonics PRO 4 CHANNEL

  • Page 1 PRO 4 CHANNEL MULTI CHANNEL WIRELESS SYSTEM WITH DM4/DM4D DISTRIBUTION MODULE OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM...
  • Page 2 INTRODUCTION The PRO 4 CHANNEL system is a high quality, multi-channel wireless microphone system designed for sound stage, studio, and theater applications. Multi-channel problems such as interaction of receivers, intermodulation and desensitization, etc. have been eliminated through creative engineering and superior design. The integral DM4 distribution module provides convenience of operation from a common antenna system and power supply without degrading the performance of the receivers.
  • Page 3: General Technical Description

    DC power supply, and the CDM4 RF/power distribution module. The DM4 RF/power distribution module is the heart of the PRO 4 CHANNEL system. Helical resonators in the front end of the RF section attenuate out-of-band RF signals preventing intermodulation and front end overload.
  • Page 4: Front Panel Description

    AUDIO LEVEL dB AUDIO LEVEL 169.505 170.245 CH 1 CH 2 BLEND BLEND 171.045 171.905 CH 3 CH 4 AUDIO AUDIO MUTE MUTE OUTPUT OUTPUT POWER ATTENUATOR POWER ATTENUATOR PRO 4 MULTI-CHANNEL Figure 2 - PRO 4 CHANNEL Front Panel...
  • Page 5: Rear Panel Description

    IN of the next receiver, and so on. Up to four or five receivers may be "stacked" in this manner before noise build­ up becomes objectionable. Antenna Antenna Receiver Receiver Power Receiver Receiver Mounting Bal 600 Ohm Out Bal Mic Level Out Lead Line Out Audio In Bracket (1/4" Phone Jack) (XLR) (RCA) (RCA) Figure 3 - PRO 4 CHANNEL Rear Panel...
  • Page 6: Installation

    INSTALLATION The PRO4 CHANNEL is designed to contain up to four receivers. Installation of these receivers is quite simple. First, place the entire assembly face down on a firm surface and remove the large phillips head screws which hold the mounting brackets at the rear of the unit. (See Figure 3) Place the receiver(s), front end first against the front panel.
  • Page 7: Troubleshooting

    TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE NO POWER LEDs OR AUDIO 1) Power switch in the OFF position. Switch to ON. POWER LED LIGHTS ON DM4 1) Power leads in back not connected to receivers. BUT NO LIGHTS ON RECEIVERS Check power connections. POWER AND MODULATION LEDs ON, 1) No audio connection to recorder or mixer.
  • Page 8: Specifications

    SPECIFICATIONS DM4/DM4D RF/POWER DISTRIBUTION MODULE RF Gain: 1.5 dB RF Output: DM4: Four outputs, 50 Ohm, BNC DM4D: Eight outputs, 50 Ohm, BNC Filtering: Two section helical resonator per antenna Third Order Intercept: +25 dBm Power Input: 120 VAC Power Consumption: Diversity: 18 Watts Standard:...
  • Page 9: Service And Repair

    There are no adjustments inside that will make a malfunctioning unit start working. LECTROSONICS service department is equipped and staffed to quickly repair your equipment. In-warranty repairs are made at no charge in accordance with the terms of the warranty. Out of warranty repairs are charged at a modest flat rate plus parts and shipping.
  • Page 10: Limited One-Year Warranty

    This warranty applies only to items returned to us, shipping costs prepaid, within one year from the date of purchase. This warranty gives you specific legal rights. You may have additional legal rights which vary from state to state. LECTROSONICS, INC. 581 LASER ROAD RIO RANCHO, NM 87124 USA...

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