RC-1170/1270 Redundancy Switch Controllers
Revision 0
Installation and Connectors
2–9
MN-RC-1170/1270
Table 2-7. Controller to Unit Ethernet Connection (optional)
Pin #
Description
1
Ethernet
2
Ethernet
3
Ethernet
4
Aux Mute driven to the remote Unit
5
+24 V from the remote Unit
6
Ethernet
7
Summary Fault from remote unit
8
Remote GND
Note:
The Controller/Unit interconnection uses some of the typically unused 10/100 Base-T
conductors for fault status, AUX Mute, 24 V parasitic power, and controller to unit GND. Use of
these pins means the base unit connectors are not compatible with a
1000Base-T (Gigabit
ethernet)
connection and the cable coming from the “device being controlled (LPOD/LGAN)”
likely cannot be directly plugged into a standard Ethernet port without a custom adapter cable.
Bias Select Switch
The Bias Select Switch has three positions: HI / SW / LO. When in center position, voltage
supplied to units is “As per front panel setting/software selection”. Either of the other positions
overrides the front panel/software selection and forces all bias voltages to the selected.
Current Cal Switch
The Current Cal Switch is a momentary push button switch that records the nominal current
present for each unit supplied. Note there are separated “calibration” values for the low and high
bias voltage options.
