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vrf Timing Problem with Init:Imm

Question asked by VRFuser on Aug 20, 2007
Latest reply on Aug 21, 2007 by VRFuser

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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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VRFuser Aug 20, 2007 3:04 PM

I cannot speak directly about the Rhode and Schwartz unit I have never worked with it. Most test equipment can set the a SRQ flag when data is ready. All you have to do is have your VEE program look for the SRQ to be set on the interface, then you can preform a read data to get your readings. You will have to look through the Rhode &Schwartz manual to see how to set this up as most equpiment will not set the SRQ unless it is configured to do so. There are other ways that equipment can let a program know data is ready, again looking through the manual is about all I can suggest.

Greg

Bigman8424 <bigman8424@yahoo.com> wrote:

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
_____

Be a better Heartthrob. HYPERLINK "http://us.rd.yahoo.com/evt=48255/*http://answers.yahoo.com/dir/_ylc=X3oDMTI5MGx2aThyBF9TAzIxMTU1MDAzNTIEX3MDMzk2NTQ1MTAzBHNlYwNCQUJwaWxsYXJfTklfMzYwBHNsawNQcm9kdWN0X3F1ZXN0aW9uX3BhZ2U-?link=list&sid=396545433"Get better relationship answers from someone who knows.
Yahoo! Answers - Check it out. --- You are currently subscribed to vrf as: sherekhan_kl@yahoo.com To subscribe please send an email to: "vrf-request@lists.it.agilent.com" with the word subscribe in the message body. To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com". To send messages to this mailing list, email "vrf@agilent.com". If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com". Search the "unofficial vrf archive" at "http://www.vrfarchive.com/vrf_archive". Search the Agilent vrf archive at "http://vee.engineering.agilent.com".

_____

HYPERLINK "http://us.rd.yahoo.com/evt=48250/*http://searchmarketing.yahoo.com/arp/sponsoredsearch_v9.php?o=US2226&cmp=Yahoo&ctv=AprNI&s=Y&s2=EM&b=50"Pinpoint customers who are looking for what you sell. --- You are currently subscribed to vrf as: hua_jing@agilent.com To subscribe please send an email to: "vrf-request@lists.it.agilent.com" with the word subscribe in the message body. To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com". To send messages to this mailing list, email "vrf@agilent.com". If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com". Search the "unofficial vrf archive" at "http://www.vrfarchive.com/vrf_archive". Search the Agilent vrf archive at "http://vee.engineering.agilent.com".

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VRFuser Aug 21, 2007 3:42 PM

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 ”IMIT:IMM” then “*WAI”.

Gary Voltz
SASTO4

Test Equipment and Maintenance and Calibration Centre

Facilities Management Services

Technology and Asset Services

Airservices Australia

E-mail: gary.voltz@airservicesaustralia.com

_____

Airservices Australia
Ph 1300 301 120       (within Australia)
Ph +61 7 3866 3382  (outside Australia)
Fax +61 7 3866 3531
HYPERLINK "http://www.airservicesaustralia.com/"www.airservicesaustralia.com

CAUTION: This e-mail is confidential. If you are not the intended
recipient, you must not disclose or use the information contained
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that the integrity of this communication is free of errors, virus
or interference.

_____

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

_____

Be a better Heartthrob. HYPERLINK "http://us.rd.yahoo.com/evt=48255/*http:/answers.yahoo.com/dir/_ylc=X3oDMTI5MGx2aThyBF9TAzIxMTU1MDAzNTIEX3MDMzk2NTQ1MTAzBHNlYwNCQUJwaWxsYXJfTklfMzYwBHNsawNQcm9kdWN0X3F1ZXN0aW9uX3BhZ2U-?link=list&sid=396545433"Get better relationship answers from someone who knows.
Yahoo! Answers - Check it out. --- You are currently subscribed to vrf as: gary.voltz@airservicesaustralia.com To subscribe please send an email to: "vrf-request@lists.it.agilent.com" with the word subscribe in the message body. To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com". To send messages to this mailing list, email "vrf@agilent.com". If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com". Search the "unofficial vrf archive" at "http://www.vrfarchive.com/vrf_archive". Search the Agilent vrf archive at "http://vee.engineering.agilent.com".

---
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To subscribe please send an email to: "vrf-request@lists.it.agilent.com" with the word subscribe in the message body.
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Search the Agilent vrf archive at "http://vee.engineering.agilent.com".

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2 Replies

VRFuser Aug 20, 2007 3:04 PM
Mark Correct
Correct Answer
I cannot speak directly about the Rhode and Schwartz unit I have never worked with it. Most test equipment can set the a SRQ flag when data is ready. All you have to do is have your VEE program look for the SRQ to be set on the interface, then you can preform a read data to get your readings. You will have to look through the Rhode &Schwartz manual to see how to set this up as most equpiment will not set the SRQ unless it is configured to do so. There are other ways that equipment can let a program know data is ready, again looking through the manual is about all I can suggest.

Greg

Bigman8424 <bigman8424@yahoo.com> wrote:

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
_____

Be a better Heartthrob. HYPERLINK "http://us.rd.yahoo.com/evt=48255/*http://answers.yahoo.com/dir/_ylc=X3oDMTI5MGx2aThyBF9TAzIxMTU1MDAzNTIEX3MDMzk2NTQ1MTAzBHNlYwNCQUJwaWxsYXJfTklfMzYwBHNsawNQcm9kdWN0X3F1ZXN0aW9uX3BhZ2U-?link=list&sid=396545433"Get better relationship answers from someone who knows.
Yahoo! Answers - Check it out. --- You are currently subscribed to vrf as: sherekhan_kl@yahoo.com To subscribe please send an email to: "vrf-request@lists.it.agilent.com" with the word subscribe in the message body. To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com". To send messages to this mailing list, email "vrf@agilent.com". If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com". Search the "unofficial vrf archive" at "http://www.vrfarchive.com/vrf_archive". Search the Agilent vrf archive at "http://vee.engineering.agilent.com".

_____

HYPERLINK "http://us.rd.yahoo.com/evt=48250/*http://searchmarketing.yahoo.com/arp/sponsoredsearch_v9.php?o=US2226&cmp=Yahoo&ctv=AprNI&s=Y&s2=EM&b=50"Pinpoint customers who are looking for what you sell. --- You are currently subscribed to vrf as: hua_jing@agilent.com To subscribe please send an email to: "vrf-request@lists.it.agilent.com" with the word subscribe in the message body. To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com". To send messages to this mailing list, email "vrf@agilent.com". If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com". Search the "unofficial vrf archive" at "http://www.vrfarchive.com/vrf_archive". Search the Agilent vrf archive at "http://vee.engineering.agilent.com".
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VRFuser Aug 21, 2007 3:42 PM
Mark Correct
Correct Answer
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 ”IMIT:IMM” then “*WAI”.

Gary Voltz
SASTO4

Test Equipment and Maintenance and Calibration Centre

Facilities Management Services

Technology and Asset Services

Airservices Australia

E-mail: gary.voltz@airservicesaustralia.com

_____

Airservices Australia
Ph 1300 301 120       (within Australia)
Ph +61 7 3866 3382  (outside Australia)
Fax +61 7 3866 3531
HYPERLINK "http://www.airservicesaustralia.com/"www.airservicesaustralia.com

CAUTION: This e-mail is confidential. If you are not the intended
recipient, you must not disclose or use the information contained
in it. If you have received this e-mail in error, please tell us
immediately by return e-mail and delete the document.

Airservices Australia does not represent, warrant or guarantee
that the integrity of this communication is free of errors, virus
or interference.

_____

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

_____

Be a better Heartthrob. HYPERLINK "http://us.rd.yahoo.com/evt=48255/*http:/answers.yahoo.com/dir/_ylc=X3oDMTI5MGx2aThyBF9TAzIxMTU1MDAzNTIEX3MDMzk2NTQ1MTAzBHNlYwNCQUJwaWxsYXJfTklfMzYwBHNsawNQcm9kdWN0X3F1ZXN0aW9uX3BhZ2U-?link=list&sid=396545433"Get better relationship answers from someone who knows.
Yahoo! Answers - Check it out. --- You are currently subscribed to vrf as: gary.voltz@airservicesaustralia.com To subscribe please send an email to: "vrf-request@lists.it.agilent.com" with the word subscribe in the message body. To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com". To send messages to this mailing list, email "vrf@agilent.com". If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com". Search the "unofficial vrf archive" at "http://www.vrfarchive.com/vrf_archive". Search the Agilent vrf archive at "http://vee.engineering.agilent.com".

---
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To subscribe please send an email to: "vrf-request@lists.it.agilent.com" with the word subscribe in the message body.
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To send messages to this mailing list, email "vrf@agilent.com".
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"owner-vrf@it.lists.it.agilent.com".
Search the "unofficial vrf archive" at "http://www.vrfarchive.com/vrf_archive".
Search the Agilent vrf archive at "http://vee.engineering.agilent.com".
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vrf Timing Problem with Init:Imm

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