The test bench setup configuration allows the SA.22c to be disciplined by the incoming 1PPS signal. The
following figure Test Bench Setup shows the test bench setup. The 1PPS disciplining mode is enabled by
default. It can be temporarily disabled by issuing the g command followed by a 1 (see The g Command
). Typical performance data for this configuration is shown in (see page 34) Flywheeling Recover with
and .1PPS offset <1 μsec (see page 35) Flywheeling Recover with 1PPS offset >1 μsec (see page 36)
Figure 17 • Time and Frequency Control System
Figure 18 • Test Bench Setup
7.4 System Requirements
The following are the requirements for 1PPS setup and operation:
SA.22c with 1PPS output enabled
GPS receiver with less than 300 ns noise
1PPS input signals must have repeatable rise time with minimal ringing and must conform to the
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