Filter
Top Products
B-7
Cisco ASR 901 10G Series Aggregation Services Router Hardware Installation Guide
OL-28105-02
Appendix B Cable Specifications
GPS Port Pinouts
GPS Port Pinouts
The Cisco ASR 901 10G router has a 10Mhz and a 1PPS GPS port that allow you to configure input or
output clocking with a GPS device. Table B-8 summarizes the pinouts for the 10Mhz and 1PPS
interfaces.
Note For pinouts related to ToD and 1PPS using the BITS interface, see Console Port Signals and Pinouts.
The 1PPS interface type is Series 1.0 / 2.3, 50 ohms.
For instructions on how to configure the 10 Mhz and 1PPSs ports, see the Cisco ASR 901 Series
Aggregation Services Router Software Configuration Guide.
3 Not connected
4 Ground
5 Ground
6 Not connected
7 TOD_N Output/Input Time of Day RS422 differential input
or output
8 TOD_P Output/Input Time of Day RS422 differential input
or output
Table B-7 Time of Day RJ-45 Interface Pinout
Pin Signal Name Direction Description
Table B-8 GPS Port Pinouts for the Cisco ASR 90110G router
10 Mhz 1PPS
Waveform Input—Sine wave
Output—Square wave
Input—Pulse shape
Output—Pulse shape
Amplitude Input— > 1.7 volt p-p
(+8 to +10 dBm)
Output— > 2.4 volts TTL
compatible
Input— > 2.4 volts TTL
compatible
Output— > 2.4 volts TTL
compatible
Impedance 50 ohms 50 ohms
Pulse Width 50% duty cycle 26 microseconds
Rise Time Input—AC coupled
Output—5 nanoseconds
40 nanoseconds