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Troubleshooting Aids
Pi n
4
5
6
7
8
Alarm Port Pinouts
The following table summarizes the external alarm input pinouts.
Table 10: External Alarm Input Pinouts
Pi n
1
2
3
4
5
6
7
8
Management Ethernet Port Pinouts
The following table summarizes the Management Ethernet port pinouts.
Table 11: Fan Alarm Port Pinout
Pi n
1
Signal
Direction
Name
GND
—
GND
—
1PPS_P
Output or
Input
TOD_N
Output or
Input
TOD_P
Output or
Input
Signal Name
Description
ALARM0_IN
Alarm input 0
ALARM1_IN
Alarm input 1
—
No connect
ALARM2_IN
Alarm input 2
ALARM3_IN
Alarm input 3
—
No connect
—
No connect
COMMON
Alarm
common
Signal
Name
TRP0+
Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide
Description
—
—
1PPS RS422 signal
Time-of-Day character
Time-of-Day character
Alarm Port Pinouts
67
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