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Synchronization 7 Analog Modules

System Reference, January 2001

251

Adjusting Timing at Pogo Pin of Analog Module

The following is the timing chart for measuring an analog

signal from the DUT by using a digitizer. The pogo pin of

the analog module is the reference point for considering

timing adjustment. For the DUT, you have to stimulate it

so that its analog signal can arrive at the pogo pin of the

analog module at the desired measurement timing. For the

digital pin that sends trigger signal, you have to program

the edge location of the trigger signal before the desired

measurement timing by the trigger line length plus trigger-

to-signal delay. As a result, the analog signal is measured

at the pogo pin of the analog module at the desired timing.

Figure 117 Adjusting Synchronization Timing (2) at Analog Module Pogo Pin

Trigger signal

@digital pin

Measurement start

@analog module

pogo pin

Analog signal

@analog module

pogo pin

Signal line

length

djtrg

Analog signal

@DUT pin

Trigger edge setting

Move backward by

trigger line length

Move backward by

trigger-to-signal delay

Reference

Point

Trigger signal

@trigger input pin

of analog module

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AWG G3 PAD FOR PS3 Spezifikationen Seite 251