Spectracom SecureSync 1200 User Reference Manual page 367

Programmable Pulse Width: 100 ns to 900 ms with 20 ns resolution
Absolute Phase Error: ±50 ns (1σ)
Programmable Phase Shift: ±5ns to 500 ms with 5ns resolution
Maximum Number of Cards: 6
Ordering Information: 1204-21 1PPS RS-485 output module, terminal block
Figure 5-17:
Model 1204-21 option card rear plate
Model 1204-21 terminal block pin assignments
Pin No. Function
1 1PPS Output 1 +
2 1PPS Output 1 -
3 GND
4 1PPS Output 2 +
5 1PPS Output 2 -
6 1PPS Output 3 +
7 1PPS Output 3 -
8 GND
9 1PPS Output 4 +
10 1PPS Output 4 -
Model 1204-2B 1PPS Output (Fiber Optical): Specifications
Inputs/Outputs: (4) 1PPS output
Operating Wavelength: 820/850 nm
Optical Power: -15 dBm average into 50/125 fiber
Fiber Optic Compatibility: 50/125 μm, 62.5/125 μm multi-mode cable
SecureSync User Reference Guide
APPENDIX
351