REAR PANEL DESCRIPTION
SERIAL/FREQUENCY LABEL - This label indicates the serial number of the DM4 module. It also indicates the RF
pass-band of the unit. IMPORTANT - The receivers installed in the unit must fall between the frequencies indicated on
the label. Serious signal loss results if the receivers are outside the RF pass-band.
ANTENNA JACK(S) - The Standard system will have one jack for connection to the antenna system. The Diversity
model will have two jacks for two separate antenna systems.
POWER LEADS - These connectors provide power for the individual receivers. Insert the connectors into the jack
provided on each receiver.
INSTALLATION SCREWS - The seven large phillips head screws are used for receiver installation and removal.
See page 5 for further instructions.
AUDIO OUTPUTS
XLR: This XLR type connector supplies a balanced, low impedance output at microphone level. The
audio signal is present on pins 2 and 3, while pin 1 is ground. The output level of this jack is
controlled by the OUTPUT ATTENUATOR control on the front panel of the receiver. Pin 2 is "hot" in
terms of polarity.
1/4": A high level (700mV max.) output at 600 Ohms. This is a three conductor jack with the tip and
ring carrying the signal and the sleeve as shield. The tip is "hot" in terms of polarity. Output from this
jack is controlled by the OUTPUT ATTENUATOR control on the front panel.
RCA: A 1 Volt "line" output at 1K Ohms. The output of this jack is not controlled by the OUTPUT
ATTENUATOR control on the front panel.
AUDIO IN This is an audio input providing a unity gain mixing bus input via a standard RCA jack. Signal applied
to this jack will appear at all three output jacks. This input is provided as a convenience in multiple channel
installations with simple mixing requirements, or for patching in another audio source (tape deck, etc.). Multiple
receivers may be "stacked" with mixed audio output by connecting the LINE OUT jack of one receiver to the AUDIO
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 Receiver Receiver
B A B A
B A B A
MountingPower
AB
B A 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
4
(28 pages)
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