Gps Port Pinouts - Cisco ASR 902U Hardware Installation Manual

GPS Port Pinouts

GPS Port Pinouts
The platform is capable of receiving or sourcing GPS signals of 1 PPS & 10 MHz. These interfaces are
provided by two mini-coax 50-Ohm, 1.0/2.3 DIN series connector on the front panel. Similarly there are two
mini-coax 50-Ohm connectors provided in the front panel to output this 1PPS and 10MHz.
The table below summarizes the GPS port pinouts.
Table 19: GPS Port Pinouts
Waveform
Amplitude
Impedance
Pulse Width
Rise Time
Table 20: GPS Port Pinout for ASR 900 RSP3
Waveform
Amplitude
Impedance
Pulse Width
Rise Time
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
122
10 MHz (Input and Output)
Input—Sine wave
Output—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
10 Mhz (input and output)
Input—Sine wave
Output—Sine and 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
Troubleshooting
1PPS (Input and Output)
Input—Rectangular pulse
Output—Rectangular pulse
Input— > 2.4 volts TTL
compatible
Output— > 2.4 volts TTL
compatible
50 ohms
26 microseconds
40 nanoseconds
1PPS (input and output)
Input—Rectangular pulse
Output—Rectangular pulse
Input— > 2.4 volts TTL
compatible
Output— > 2.4 volts TTL
compatible
50 ohms
26 microseconds
40 nanoseconds