Fire-Lite ECC-50 - ECC-RPU Remote Page Unit

44 Emergency Command Center Manual — P/N LS10001-000FL-E:D 9/3/2014
Installation ECC-RPU Remote Page Unit
2.8 ECC-RPU Remote Page Unit
Connections are made from TB24, TB12, and TB22 on the ECC-50/100 main control board to
TB1, TB3, and TB2 on the RPU. If the ECC-RPU 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-RPU is not the last device, the jumper must be on pins 2 and 3 of
JS4 as shown below. For the external audio riser, when the ECC-RPU is the last device, termina-
tion ELR-15K must be connected to pins 4 and 5 on TB2. T-taps and multiple home runs to the
main control board are not allowed for the external data bus or the external data riser.
+
-
+
-
+
-
+
-
+
-
+
-
B
A
B
A
B
A
main control board
RPU board
TB24
TB12
TB22
TB1
TB3
TB2
external operator interface power - 24VDC
external
data bus
external
audio
riser
to next operator
interface or amplifier
r
p
u
w
i
r
e
b
.
w
m
f
Figure 2.24 Remote Page Unit Wiring (Class B/Style Y)
to next operator
interface or amplifier
to next operator
interface or amplifier
JS4
(shown jumpered
on pins 2 and 3)