Audio Input Wiring - Extron electronics DMP 44 LC User Manual

b
Power/Reset LED — The green LED indicator duplicates the front panel LED
"Reset Actuator and LED"
operation (see the
c
Line 1-4 input connectors — 6-pole 3.5 mm double-stacked captive screw
connectors accept balanced or unbalanced mono line level signals. Line inputs
provide gain settings to accommodate consumer (-10 dBV) and professional (+4 dBu)
operating line level sources. Up to four mono line inputs, balanced and unbalanced
in any combination may be connected to these inputs (see the following diagram for
wiring instructions).

Audio Input Wiring

Tip
Ring
Sleeve
Balanced Input
Figure 3. Wiring Balanced or Unbalanced Line Inputs
d
Mono output connectors (1-4) — 6-pole 3.5 mm captive screw connectors provide
balanced or unbalanced connections for mono line level output signals.
Audio Output Wiring
Tip
Ring
Sleeve
Balanced Output
Figure 4. Output Connector Wiring
CAUTION:
Connect the sleeve to ground (Gnd). Connecting the sleeve only to
a negative (-) terminal will damage the audio output circuits.
e
RS-232 connector — A 6-pole 3.5 mm captive screw connector for bidirectional
RS-232 (±5 V) serial control. Default baud rate is 38400.
RS-232
Device
Transmit (Tx)
Do not tin
Receive (Rx)
the wires!
Ground (
Figure 5. RS-232 Wiring
f
Digital input connector — A 6-pole 3.5 mm captive screw connector (shared with
the RS-232 port) provides three configurable input ports allowing connection to
various devices including motion detectors, alarms, buttons, photo (light) sensors,
and temperature sensors. This connector shares a common ground with the RS-232
connector (e).
section for additional information).
Tip
Sleeve
Unbalanced Input
Tip
NO Ground Here
Sleeve
Unbalanced Output
CAUTION
For unbalanced audio, connect the
sleeve to the ground contact.
DO NOT
connect the sleeve to the
negative (−) contacts.
Tx Rx
Bidirectional
Transmit (Tx)
Receive (Rx)
)
Ground ( )
RS-232 DIGI IN
Tx Rx 1 2 3
DMP 44 LC • Installation 7