Colby Instruments PDL-100A - TST? Test Operation Query QUERY

Chapter 5 Common Commands
© 2010 Colby Instruments. PDL-100A Operating and Programming Manual Page 38
*TST? Test Operation Query QUERY
The *TST? query initiates an internal self-test by setting all
relays off, moving the electromechanical trombone to zero
delay, and re-initializing all internal variables.
Command
Syntax
*TST?
Example
*TST?
Returns
<decimal integer><NL>
0 = Internal self-test passed.
1 = Internal self-test failed.
Programming
Example
HP : DIM TST$(50)
OUTPUT 705;"*TST?"<NL>
ENTER 705;TST$
PRINT(TST$)
NI : DIM QUERY_RESPONSE As Variant
CWGPIB.Write “*TST?”
QUERY_RESPONSE = CWGPIB.Read(250)
MsgBox (“Response is ” & QUERY_RESPONSE)
Note: It may take up to 20 seconds to perform the
calibration check. If you are commanding the unit via
GPIB, this query may TIMEOUT before the instrument
returns a status value.
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