Tektronix Technical Forums are maintained by community involvement. Feel free to post questions or respond to questions by other members. Should you require a time-sensitive answer, please contact your local Tektronix support center here.

using external trigger

2015, 2015-P, 2016, 2016-P
Post Reply
WALLISP
Posts: 1
Joined: October 6th, 2011, 7:01 am
Country: United Kingdom

using external trigger

Post by WALLISP » October 6th, 2011, 7:16 am

I am trying to configure the 2016 THD multimeter to take a number of voltage measurements after an external trigger is applied.
I am having difficulty working out which GPIB commands to use.

I need to use the external trigger and then wait a number of milliseconds then take upto 100 readings and then retrieve then over the gpib bus.

I am using the sample code on page 241 of the manual as a starting point.

But this code does not appear to work when i use EXT Trigger. When i send the READ? command i always get the -214 error message 'Trigger Deadlock'.

I

Dale C
Keithley Applications
Keithley Applications
Posts: 2847
Joined: June 10th, 2010, 6:22 am
Country: United States
Contact:

Re: using external trigger

Post by Dale C » October 10th, 2011, 12:09 pm

:TRIG:DELAY 1
This would set up a one second delay for each reading
:TRIG:COUNT 100
This would set up for 100 readings.
:TRIG:SOURCE EXT
This would configure the unit for an external trigger. Meaning that it now requires an external trigger to take a reading.
Sending :READ? now would result in TRIGGER DEADLOCK.
You would have to first apply the external trigger and then use :FETCH?
You would need to do this 100 times.

Dale C
Keithley Applications
Keithley Applications
Posts: 2847
Joined: June 10th, 2010, 6:22 am
Country: United States
Contact:

Re: using external trigger

Post by Dale C » February 14th, 2012, 5:58 am

READ? is an
:ABORT
:INIT
:FETCH?
When the unit is set for external trigger the unit needs the external trigger to take a reading.
But the :FETCH? is asking for a reading with no trigger.
So TRIGGER DEADLOCK.
It cannot send a reading because it is waiting for the external trigger.

Post Reply

Return to “Series 2015 & 2016 THD/Audio Analyzers”

Who is online

Users browsing this forum: No registered users and 0 guests