Phase: Displays the configured phase offset (e.g., to account for delays caused by dif-
ferent cable lengths, or other latencies).
Lock: Shows, if the output frequency is locked to the SecureSync system-dis-
ciplined oscillator.
Note: Even if an output frequency status is LOCKED, it will not be available
at the output port, if the Signature Control for that port has been
DISABLED.
5.2.3.6 Programmable Square Wave Out [1204-17]
The Model 1204-17 Square Wave output Option Card provides four programmable square
wave outputs for the SecureSync platform.
Inputs/Outputs: (4) Programmable square wave outputs
Signal Type and Connector: TTL (BNC)
Accuracy: ±50ns (1σ)
Output Load Impedance: 50Ω
Rise Time to 90% of Level: <10ns
Programmable Period: 100ns to 2,000,000,000ns in 5ns steps, or to
1,800,000,000µs in 1µs steps
Programmable Pulse Width: 20ns to 900ms with 5ns resolution
Maximum Number of Cards: 6
Ordering Information: 1204-17: Square Wave Out
Figure 5-24: Model 1204-17 option card rear plate
378 SecureSync 2400 User Manual
APPENDIX