
Chapter 5 Troubleshooting
Pinouts
Table | BITS Port Pinout (continued) |
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Pin | Signal Name | Direction | Description | |
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6 |
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| Not used |
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7 |
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| Not used |
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8 |
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| Not used |
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GPS Port Pinout
Table
Table | GPS Port Pinout |
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| 10 Mhz (input and output) | 1PPS (input and output) |
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Waveform |
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Amplitude |
| Input— > 1.7 volt | Input— > 2.4 volts TTL |
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| (+8 to +10 dBm) | compatible |
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| Output— > 2.4 volts TTL | Output— > 2.4 volts TTL |
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| compatible | compatible |
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Impedance |
| 50 ohms | 50 ohms |
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Pulse Width |
| 50% duty cycle | 26 microseconds |
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Rise Time |
| 40 nanoseconds | |
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Time of Day Port Pinout
Table
Table | RJ45 1PPS/ToD Port Pinout |
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Pin | Signal Name | Direction | Description | |
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1 | 1PPS_P | Output or Input | 1PPS RS422 | |
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| signal |
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2 | 1PPS_N | Output or Input | 1PPS RS422 | |
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| signal |
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3 | RESERVED | Output | Do NOT connect | |
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4 | GND |
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5 | GND |
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| Time of Day |
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| character |
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6 | RESERVED | Input | Do NOT connect | |
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Cisco ASR 903 Router Hardware Installation Guide
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