
2ECC-RM Installation Document — P/N LS10029-000FL-E:B 8/27/2013
3. Carefully reinstall the bracket/microphone assembly.
Remember to attach the ground cable.
3 Wiring
Connections are made from TB24, TB12, and TB22 on the
ECC-50/100 main control board to TB3, TB2, and TB1 on
the RM. If the ECC-RM is the last device on the audio
and data bus chain, signal terminations are required. For
the external data bus, a removable jumper must be on pins
1 and 2 of JS4. If the ECC-RM is not the last device, the
jumper must be on pins 2 and 3 of JS4. For the external
audio riser, termination (15K ohm resistor) must be on
pins 4 and 5 on TB2. 4 LED Indicators
System in Use A green LED that turns on steady when
the main console, an LOC, an RPU, or an RM has control
of the audio system.
OK to Page A green LED that turns on steady to
instruct the operator that he/she may start speaking.
Power A green LED that turns on steady when DC
power is present.
Data Trouble A yellow LED turns on steady when the
main console and RM cannot communicate.
Audio Trouble A yellow LED that turns on steady
when the audio riser wiring is open or short-circuited.
Mic Trouble A yellow LED that turns on steady to
indicate a microphone wiring fault.
mounting holes
4.0” (10.16cm) O.C.
lower mounting holes
Figure 4 Backbox Mounting
earth ground
+
-
+
-
+
-
+
-
B
A
A
B
+
-
+
-
A
B
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
main control board
RM board
TB24
TB12
TB22
external operator
interface power -
24VDC
external data bus
external
audio
riser
to next operator
interface or
amplifier
Figure 5 Remote Microphone Wiring
(Class B/Style Y)
JS4
(shown jumpered
on pins 2 and 3)
TB3
data
bus
TB2
audio
out
TB1
power
main control board
RM board
TB24
TB12
TB22
TB3
data
bus
TB2
audio
out
TB1
power
external operator
interface power -
24VDC
external
data
bus
external
audio
riser
Figure 6 Remote Microphone Wiring
(Class A/Style Z)
JS4
(shown jumpered
on pins 2 and 3)