User Manual

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13.4 Output Status Detection
The digital IO interface has system status logic outputs that are described in this section.
All these outputs are in reference to DGND, pins 8, 10, 18, 20, and 22.
Figure 51 - Output status pin out
13.4.1 /SYNC
When the output sine wave of the Instrument is about to pass through 0 degrees, pin 9
(/SYNC) will send out a 250 uS 12 V to 0 V pulse as shown in the below timing diagram.
This output
Figure 52 - Sync Timing Diagram