Gps Port Pinouts; Time-Of-Day Port Pinouts - Cisco ASR-920-12SZ-A Hardware Installation Manual

GPS Port Pinouts

Pi n
7
8
GPS Port Pinouts
The following table summarizes the GPS port pinouts.
Note
The 10 Mhz and 1 PPS interfaces can be configured as input or output using Cisco IOS CLI commands. For
more information, see the Cisco ASR 920 Series Aggregation Services Router Configuration Guide.
Table 12: GPS Port Pinout
Waveform
Amplitude
Impedance
Pulse
Width
Rise Time

Time-of-Day Port Pinouts

The following table summarizes the ToD/1-PPS port pinouts.
Table 13: RJ-45 1PPS/ToD Port Pinouts
Pi n
1
2
3
Cisco ASR-920-12SZ-A and Cisco ASR-920-12SZ-D Aggregation Services Router Hardware Installation Guide
66
Signal Direction Description
Name
— — Not used
— — Not used
10 Mhz (input and output)
Input—Sine wave
Output—Sine or square wave
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 Direction
Name
RESERVED Output
RESERVED Input
1PPS_N Output or
Input
1PPS (input and output)
Input—Pulse shape
Output—Pulse shape
Input— > 2.4 volts TTL compatible
Output— > 2.4 volts TTL compatible
50 ohms
26 microseconds
40 nanoseconds
Description
Do Not Connect
Do Not Connect
1PPS RS422 signal
Troubleshooting Aids