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Inability to start a Pulse Trigger on N6705B

Question asked by deepak_kumar on Sep 28, 2017
Latest reply on Oct 2, 2017 by MattC

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I am able to set arbiter for two channels using following command set :

start_v, top_v, delay_t0, delay_t1, delay_t2, chan_no to be replaced by 5, 0, 1, 100, 10, 1
start_v, top_v, delay_t0, delay_t1, delay_t2, chan_no to be replaced by 12, 0, 1, 100, 10, 2

'ARB:VOLT:PULS:STAR ' + str(start_v) + ',(@' + str(chan_no) + ' )'
'ARB:VOLT:PULS:TOP ' + str(top_v) + ',(@' + str(chan_no) + ' )'
'ARB:VOLT:PULS:STAR:TIM ' + str(delay_t0) + ',(@' + str(chan_no) + ' )'
'ARB:VOLT:PULS:TOP:TIM ' + str(delay_t1) + ',(@' + str(chan_no) + ' )'
'ARB:VOLT:PULS:END:TIM ' + str(delay_t2) + ',(@' + str(chan_no) + ' )'
'ARB:TERM:LAST ON,(@' + str(chan_no) + ')'

But when i am trying to run the arbiter using following commands it throws an error stating "LAN: Error309: Cannot initiate voltage and current in FIXed mode; No transient has been configured for group 1."

chan_no to be replaced by 1,2

'VOLT:MODE ARB, (@' + str(chan_no) + ')'
'TRIG:ARB:SOUR IMM'
'INIT:TRAN (@' + str(chan_no) + ')'
'*TRG'

Please suggest on how to resolve the issue.

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MattC

Oct 2, 2017 8:21 AM

I think your issue may lay in the following command:

'TRIG:ARB:SOUR IMM'

This tells the unit to send an immediate trigger. You are doing this before you send your INIT command so there is nothing in the Waiting for Trigger state to trigger.I think that you may want to change that to:

'TRIG:ARB:SOUR BUS'

Please try that and let me know.

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deepak_kumar @ MattC on Oct 2, 2017 10:32 AM

Hi Matt

Thanks for the reply.

Before making any comment I would like to tell you that even with the error, the sequence of commands does the intended job. I have tried it on different N6705B Power Analyzers and everywhere things were happening but the error message continues to haunt me.

I have tried 'TRIG:ARB:SOUR BUS' as well. Even in that case it was throwing the same error. I will retry again.

Even I sequenced the commands with delay between them, but that didn't worked out.

Is there anything else which I am missing ? I know I am asking for a lot, but is it possible for you to help me connect with Keysight Application Engineer for N6705B.

With Regards

Deepak Kumar

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MattC

Oct 2, 2017 2:58 PM

Hi Deepak,

The best way to get in touch with a Keysight expert is through this link:

ContactExpert

This will get you in touch with the contact center in your local time zone.

I looked at some old (VB6) programs that I wrote when the N6705 first came out and one more command that it seems like is missing is the following:

ARB:FUNC:TYPE VOLT, (@1,2)

This is a required command. Hopefully this makes the error go away.

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3 Replies

MattC Oct 2, 2017 8:21 AM
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I think your issue may lay in the following command:
'TRIG:ARB:SOUR IMM'
This tells the unit to send an immediate trigger. You are doing this before you send your INIT command so there is nothing in the Waiting for Trigger state to trigger.I think that you may want to change that to:
'TRIG:ARB:SOUR BUS'

Please try that and let me know.
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- deepak_kumar @ MattC on Oct 2, 2017 10:32 AM
  Mark Correct
  Correct Answer
  Hi Matt
  
  Thanks for the reply.
  
  Before making any comment I would like to tell you that even with the error, the sequence of commands does the intended job. I have tried it on different N6705B Power Analyzers and everywhere things were happening but the error message continues to haunt me.
  I have tried 'TRIG:ARB:SOUR BUS' as well. Even in that case it was throwing the same error. I will retry again.
  Even I sequenced the commands with delay between them, but that didn't worked out.
  
  Is there anything else which I am missing ? I know I am asking for a lot, but is it possible for you to help me connect with Keysight Application Engineer for N6705B.
  
  With Regards
  Deepak Kumar
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MattC Oct 2, 2017 2:58 PM
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Correct Answer
Hi Deepak,

The best way to get in touch with a Keysight expert is through this link:
ContactExpert

This will get you in touch with the contact center in your local time zone.

I looked at some old (VB6) programs that I wrote when the N6705 first came out and one more command that it seems like is missing is the following:
ARB:FUNC:TYPE VOLT, (@1,2)

This is a required command. Hopefully this makes the error go away.
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Inability to start a Pulse Trigger on N6705B

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