Spectracom SecureSync - 1 PPS In;Out [1204-28, -2 A]

Offset: Displays the configured Offset (to account for cable delays or other latencies).
Edge: Shows if the on-time point of the 1PPS output is the rising or falling edge of the
pulse.
Pulse Width: Displays the configured Pulse Width of the 1PPS output. The Pulse Width is
displayed in nanoseconds (ns). The default Pulse Width is 200 milliseconds.
5.2.3.2 1PPS In/Out [1204-28, -2A]
These 1PPS input/output cards provide one 1PPS input, and three or two additional 1PPS out-
puts on BNC or ST connectors for the SecureSync platform.
Model 1204-28 1PPS Input/Output: Specifications
Inputs/Outputs: (1) 1PPS input/(3) 1PPS output
Signal Type and Connector: TTL (BNC)
Input Impedance: 50 Ω
Output Load Impedance: 50 Ω
Rise Time to 90% of Level: <10ns
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: 1204-28: 1PPS 1-input/3-output, BNC connectors
Figure 5-19: Model 1204-28 option card rear plate
Model 1204-2A 1PPS Input/Output: Specifications
Inputs/Outputs: (1) 1PPS input/(2) 1PPS output
Operating Wavelength: 820/850nm
372 SecureSync User Reference Guide
APPENDIX