Gps Port Pinouts - Cisco NCS 540 Installation Manual

Appendix

GPS Port Pinouts

The table below summarizes the GPS port pinouts.
Table 16: GPS Port Pinouts
Waveform
Amplitude
Impedance
Pulse Width
Rise Time
Cisco Network Convergence System 540 Passive Cooled Small Density Routers Hardware Installation Guide
10 MHz (Input and Output)
Input—Sine wave
Output—Sine wave
Input— > 1.7 volts p-p
Output— > 2.2 volts p-p
50 ohms
50% duty cycle
Input—AC coupled
GPS Port Pinouts
1PPS (Input and Output)
Input—Rectangular pulse
Output—Rectangular pulse
Input— > 1.2V
Output— > 2.5V
50 ohms
50% duty cycle
Output—5 nanoseconds
53