
1PPS (input and output)
10 Mhz (input and output)
40 nanoseconds
Input—AC coupled
Output—5 nanoseconds
Rise Time
Time of Day Port Pinout
The table below summarizes the ToD port pinout for ASR900-RSP1-55.
Table 28: RJ45 ToD Port Pinout
Description
Direction
Signal Name
Pin
1PPS RS422 signal
Output or Input
1PPS_P
1
1PPS RS422 signal
Output or Input
1PPS_N
2
Do NOT connect
Output
RESERVED
3
—
—
GND
4
Time of Day character
—
GND
5
Do NOT connect
Input
RESERVED
6
Time of Day character
Output or Input
TOD_P
7
Time of Day character
Output or Input
TOD_N
8
The table below summarizes the TOD pinout for A900-RSP2A and A900-RSP3-3C-400 modules.
This port requires the use of SHIELDED cable for GR-1089-core “Intra-Bldg lightning surge” protection.
RS422 interface is per industry standard EIA-422 /RS422 specification.
Note
To avoid surge failure on the 1PPS and 10MHz ports on a A900-RSP2A RSP, while using cables exceeding
2m, an external surge protector must be installed.
Note
Table 29: RJ48 IPPS/ToD Port Pinout
Description
Direction
Signal Name
Pin
V.11 Cable Corporation
Output or Input
RESERVED
1
Output or Input
RESERVED
2
1PPS RS422 signal
Output
1PPS_N
3
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
163
Troubleshooting
Time of Day Port Pinout
Содержание ASR 903
Страница 2: ... 2015 2018 Cisco Systems Inc All rights reserved ...
Страница 10: ...Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide x Contents ...
Страница 198: ...Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide 188 Troubleshooting Alarm Conditions ...