Safran SecureSync 2400 - Page 413

Table 5-6: Model 1204-03 1PPS/Freq Input: Connector pin assignment
Pin No. Signal Function
1 GND Ground
2 FREQIN_RS485+ RS-485 Frequency Input +
3 FREQIN_RS485- RS-485 Frequency Input –
4 GND Ground
5 PPSIN_RS485+ RS-485 1PPS Input +
6 PPSIN_RS485- RS-485 1PPS Input –
7 GND Ground
8 PPSOUT_RS485+ RS-485 1PPS Output +
9 PPSOUT_RS485- RS-485 1PPS Output –
10 GND Ground
Models 1204-01,-03: Input/Output Specifications
FREQ Input Specifications
Signal Type And Connector: Sine wave (BNC)
Detected Level: +13 dBm to -6dBm
Frequency Setting: 1KHz…10MHz in 1Hz steps
1PPS Input Specifications
Input Impedance: 50Ω
Minimum Pulse Width detected: 100ns
Input Signal Jitter: <±500ns t o achieve oscillator lock, <±50ns to achieve
system performance
Programmable Phase Shift: ±5ns to 500ms with 5ns resolution
1PPS Output Specifications
Signal Type And Connector: TTL level (BNC)
Output Load Impedance: 50Ω
SecureSync 2400 User Manual 397
APPENDIX