Radyne OM20 Installation And Operation Manual page 64

OM20 Universal Outdoor Modem
The OM20's internal M&C system is connected to most of the circuitry on any board contained in
the chassis. These connections provide status on the condition of the circuitry and provide the
data required for the various measurements the OM20 provides. The on-board M&C processes
this information and generates status indications and alarms when necessary. Detailed status
information is available via the GUI, Remote port, and the Form-C fault connections available on
this connector. This summary information can be connected to external equipment, switches, or
alarms. Refer to Table 5.3 for the Form-C connector pin-outs.
Table 5.3. Remote/Terminal/Fault Connector (J2)
Pin No.
A Receive Data RS-232
B Transmit Data RS-232
C AGC Voltage
D Transmit Data RS-485 (+)
E Transmit Data RS-485 (-)
F Receive Data RS-485 (+)
G Receive Data RS-485 (-)
H Ground
J Mod Fault – C
K Mod Fault – NC
L Mod Fault – NO
M Demod Fault
N Demod Fault – NC
S Demod Fault – NO
R Ground
U Default
P Default
TM116 – Rev. 1.2
Signal Name
Rear Panel Interfaces
Signal
RXD-232
TXD-232
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TX-485-B
TX-485-A
RX-485-B
RX-485-A
GND
MF-C
MF-NC
MF-NO
DF-C
DF-NC
DF-NC
GND
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Direction
Input
Output
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Output
Output
Input
Input
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5-4