Measurement Computing Data Translation DT3034, User Manual

Page: 110 / 178

Principles of Operation
109
Synchronizing the Clocks
You can synchronize the clocks of the A/D and D/A subsystems as follows:
• Internal Sample Clocks – Using software, specify the clock source as the internal A/D
sample clock for the A/D subsystem and the internal D/A output clock for the D/A
subsystem. Specify the same frequency for both internal clock sources. Then, specify the
trigger source for the A/D and D/A subsystems as the software trigger. When started,
both subsystems are triggered and clocked simultaneously.
• External Sample Clocks – Using software, specify the clock source as the external A/D
sample clock for the A/D subsystem and as the external D/A output clock for the D/A
subsystem. Then, wire an external sample clock to both the A/D subsystem and the D/A
subsystem. Then, specify a synchronous trigger source for the A/D and D/A subsystems
(refer to
page 108 ). When started, both subsystems are triggered and clocked
simultaneously.