Time Of Day Port Pinout - Cisco ASR 903 Installation Manual

Troubleshooting
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
Pin
1
2
3
4
5
6
7
8
The table below summarizes the TOD pinout for A900-RSP2A and A900-RSP3-3C-400 modules.
Note
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.
Table 29: RJ48 IPPS/ToD Port Pinout
Pin
1
2
3
10 Mhz (input and output)
Input—AC coupled
Output—5 nanoseconds
Signal Name Direction
1PPS_P Output or Input
1PPS_N Output or Input
RESERVED Output
GND —
GND —
RESERVED Input
TOD_P Output or Input
TOD_N Output or Input
Signal Name Direction
RESERVED Output or Input
RESERVED Output or Input
1PPS_N Output
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
1PPS (input and output)
40 nanoseconds
Description
1PPS RS422 signal
1PPS RS422 signal
Do NOT connect
—
Time of Day character
Do NOT connect
Time of Day character
Time of Day character
Description
V.11 Cable Corporation
1PPS RS422 signal
Time of Day Port Pinout
163