Using trigger for a measurement

2000, 2001, 2002, 2010, 2100, 2110
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tomerear
Posts: 2
Joined: August 17th, 2017, 4:54 am
Country: Israel

Using trigger for a measurement

Post by tomerear » August 23rd, 2017, 10:03 pm

Hello,
I'm using KEITHLEY 2010 and want to measure voltage of an instrument using a trigger (when the multimeter get a pulse it will start to measure)
I saw on the KEITHLEY manual the following commands:
:TRIGger:SEQuence:SOURce EXTernal
But when I'm using this command (Matlab) I get an error (214, 420) on the instrument
As a simple example trying run this code:

abcObj = gpib('ni', 0, 16);
fopen(abcObj);
fprintf(abcObj,':*RST');
fprintf(abcObj,':CONFigure:VOLTage:AC')
fprintf(abcObj,':TRIGger:SEQuence:SOURce EXTernal')
fprintf(abcObj,':READ?');
VoltResult=scanstr(abcObj)

What am I doing wrong? And what is the right way for using a trigger pulse?
Thanks for any help!

tomerear
Posts: 2
Joined: August 17th, 2017, 4:54 am
Country: Israel

Re: Using trigger for a measurement

Post by tomerear » September 5th, 2017, 8:21 am

Any help? please...

Dave W
Tektronix Applications
Tektronix Applications
Posts: 220
Joined: April 26th, 2010, 12:01 pm
Country: United States

Re: Using trigger for a measurement

Post by Dave W » January 8th, 2018, 12:44 pm

Error -214 is "Trigger Deadlock"
Error -420 is "Query Unterminated"

The command "TRIGger:SEQuence:SOURce EXTernal" is the proper command for configuring the 2010 to wait for a trigger on the external trigger input.

It may be possible that you are getting error -214 because the instrument is not receiving a trigger. The trigger needs to be TTL level low pulse, 2us or longer input onto pin 2 of the Trigger Link connector (don't forget to connect ground on pins 7 or 8).

The -420 error happens as a result of the -214 Trigger Deadlock error. If the trigger is deadlock, the measurement never occurs and the READ? query can never complete so the next command sent to the instrument causes the -420 Query Unterminated error.

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