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FW: vrf Timing Problem with Init:Imm

Question asked by VRFuser on Aug 21, 2007
Latest reply on Aug 22, 2007 by VRFuser
*edited

 

I’ve used “*WAI” a lot recently to great effect. 

 

The trick is in the sequencing. First you have to turn off continuous Triggering, with the devices I’m using that is “INIT:CONT OFF”, then send your “INIT:IMM;*WAI” or ”INIT:IMM” then “*WAI”.

 

Gary Voltz
SASTO4

Test Equipment and Maintenance and Calibration Centre

Facilities Management Services

Technology and Asset Services

Airservices Australia


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From: Bigman8424 [mailto:bigman8424@yahoo.com]
Sent: Tuesday, 21 August 2007 4:06 AM
To: VRF
Cc: VRF
Subject: [vrf] Timing Problem with Init:Imm

 

I am trying to use VBA and GPIB commands, however I am having a problem with timing. I am first hitting Run SGL (single) and then "init:imm" and requesting Fetch EVM and reading it, however the timing for the init:imm takes 3 seconds for it to load and my program debugs. I tried the *WAI function after I placed the Init:Imm, however it did not work. I also tried the *OPC? command, however when I read in OpcOk$, it also came up as "1" and my evm value read in as "              ". (quotation with nothing in the middle). Any suggestions and comments other than putting in a manual delay. I want Rhode and Schwarz to tell me when the EVM value is ready to read, other than it reading in "          " (blank), if it is not ready for it to wait for it to be ready, and then read in the value.




Thanks

 

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