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Chapter 4 Remote Interface Reference
Simplified Programming Overview
4
Reading a Query Response
Only the query commands (commands that end with “?”) will instruct
the function generator to send a response message. Queries return
internal instrument settings. For example, the following command string
sent from your computer will read the function generator’s error queue
and retrieve the response from the most recent error.
dimension statement Dimension string array (
255 elements)
SYST:ERR? Read error queue
enter statement Enter error string response
Selecting a Trigger Source
When Sweep or Burst is enabled, the function generator will accept an
immediate internal trigger, a hardware trigger from the rear-panel
Trig In connector, a manual trigger from the front-panel key, or a
software (bus) trigger. By default, the internal trigger source is selected.
If you want to use an external or a software trigger source, you must first
select that source. For example, the following command strings sent from
your computer will output a 3-cycle burst each time the rear-panel
Trig In connector receives the rising edge of a TTL pulse.
BURS:NCYC 3 Set burst count to 3 cycles
TRIG:SLOP POS Set polarity to rising edge
TRIG:SOUR EXT Select external trigger source
BURS:STAT ON Enable burst mode
33210A users guide.book Page 161 Wednesday, July 16, 2008 11:16 AM
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