Time Of Day Port Pinout - Cisco ASR 903 Troubleshooting Manual

Troubleshooting
Amplitude
Impedance
Pulse Width
Rise Time

Time of Day Port Pinout

The table below summarizes the ToD port pinout for ASR900-RSP1-55.
Table 4: 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.
This port requires the use of SHIELDED cable for GR-1089-core "Intra-Bldg lightning surge" protection.
Note
RS422 interface is per industry standard EIA-422 /RS422 specification.
10 Mhz (input and output)
Input— > 1.7 volt p-p(+8 to +10
dBm)
Output— > 2.4 volts TTL
compatible
50 ohms
50% duty cycle
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
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
Time of Day Port Pinout
1PPS (input and output)
Input— > 2.4 volts TTL
compatible
Output— > 2.4 volts TTL
compatible
50 ohms
26 microseconds
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
3