Progr. Frequ. Card 1204-30 (TTL, RS-485): Specifications
Outputs: (4) independently programmable square wave outputs
Signal Type: RS-485
Wave Form: square
Connector: Terminal block
Output Load Impedance: n/a
Output Pulse/Frequency Rates: 1PPS to 25 MPPS in 0.1-PPS increments
Accuracy: Function of input synchronization source (GPS, IRIG, 1PPS, etc.)
Synchronization: Output frequency locked to SecureSync disciplined 10MHz
Jitter, cycle-to-cycle: <10ns
Phase Noise: n/a
Harmonics: n/a
Spurious: n/a
Maximum Number of Cards: 6
Ordering Information: 1204—30, Programmable Frequency Card, TTL, RS-485
Figure 5-29: Model 1204-30 option card rear plate
Table 5-8:
Model 1204-30 terminal block pin assignments
Pin No. Function
1 Frequ. Output 1 +
2 Frequ. Output 1 –
3 GND
4 Frequ. Output 2 +
5 Frequ. Output 2 –
6 Frequ. Output 3 +
374 SecureSync User Reference Guide
APPENDIX
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