Spectracom SecureSync User Reference Manual page 330

5.2 Time and Frequency Option Cards
Figure 5-13:
5.2.5.2 Programmable Frequency Card 1204-2F (TTL, BNC): Specifications
Outputs : (4) independently programmable square wave outputs
Signal Type : TTL (BNC)
Wave Form : square
Connector : BNC
Output Load Impedance : 50 Ω
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—2F, Programmable Frequency Card, TTL, BNC
Figure 5-14:
5.2.5.3 Progr. Frequ. Card 1204-30 (TTL, RS-485): Specifications
Outputs : (4) independently programmable square wave outputs
Signal Type : RS-485
Wave Form : square
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Model 1204-13 option card rear plate
Model 1204-2F option card rear plate
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5 SecureSync User Reference Guide Rev. 18