Cisco ASR-920-12SZ-IM - CHAPTER 5 Troubleshooting; Pinouts; GPS Port Pinouts; Chapter

CHAPTER 5
Troubleshooting
This chapter provides information about troubleshooting issues, if any, on the Cisco ASR 920 Series
Aggregation Services Router.
•
Pinouts, page 99
•
LED Summary, page 103
Pinouts
The sections describe the pinouts for the Cisco ASR 920 Series Router interfaces:
GPS Port Pinouts
The table below summarizes the GPS port pinouts.
Table 14: GPS Port Pinouts
1PPS (input and output)10Mhz (input and output)
Input—Pulse
Output—Pulse
Input—Sine wave
Output—Square wave
Waveform
Input—2.4 volts TTL compatible
Output—2.4 volts TTL compatible
Input—1.7 volt p-p (+8 to +10
dBm)
Output—2.4 volts TTL compatible
Amplitude
50 ohms50 ohmsImpedance
26 microseconds50 percent duty cyclePulse Width
40 nanoseconds
Input—AC coupled
Output—5 nanoseconds
Rise Time
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