Tektronix TDS5000B Series Online Programmer Guide

TDS5000B Online Programmer Guide
-- 8 6 2 --
comes, interrupts those tasks and returns con-
trol to this
task.
/* Take amplitude measurement */
MEASUREMENT:IMMED:VALUE?
This technique is more efficient but requires more sophisticated pro-
gramming.
*OPC?
The *OPC? query places a 1 in the Output Queue once an operation
that generates an OPC message is complete. A time out could
occur if you try to read the output queue before there is any data in it.
The same command sequence using the *OPC? query for synchroniza-
tion looks like this:
/* Set up conditional acquisition */
ACQUIRE:STATE OFF
SELECT:CH1 ON
HORIZONTAL:RECORDLENGTH 500
ACQUIRE:MODE SAMPLE
ACQUIRE:STOPAFTER SEQUENCE
/* Acquire waveform data */
ACQUIRE:STATE ON
/* Set up the measurement parameters */
MEASUREMENT:IMMED:TYPE AMPLITUDE
MEASUREMENT:IMMED:SOURCE CH1
/* Wait until the acquisition is com-
plete before taking the measurement
*/
*OPC?
Wait for read from Output Queue.
/* Take amplitude measurement */
MEASUREMENT:IMMED:VALUE?
This is the simplest approach. It requires no status handling or loops.
However, you must set the controller time--out for longer than the ac-
quisition operation.

Tektronix TDS5000B Series Specifications

General

Brand	Tektronix
Model	TDS5000B Series
Category	Test Equipment
Language	English