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Search found 5 matches

by chrissa
August 11th, 2016, 7:51 am
Forum: Current Sources
Topic: How to switch off 6221 output after a sweep.
Replies: 1
Views: 11476

How to switch off 6221 output after a sweep.

Hello I use the realterm console program via a serial interface (hardware handshaking) to drive a 6221. I want a program that sets the current from the 6221 as follows: 1. -10pA or any small value for 1 second. This is just a dummy/setup point. 2. then +10mA for 0.03 seconds 3. then I want the outpu...
by chrissa
July 1st, 2013, 2:38 am
Forum: Other Keithley Instrument Products
Topic: RTS input on Keithley 6221 ignored
Replies: 4
Views: 22142

Re: RTS input on Keithley 6221 ignored

Hello Norbert Thank you for the response. In a nutshell: RTS is an information signaling that the PC has commands for the 6221 (waiting for CTS before it really starts to send them), it’s not intended to stop data being sent from the 6221. I fully understand this comment and I am willing to accept t...
by chrissa
June 13th, 2013, 10:33 am
Forum: Other Keithley Instrument Products
Topic: RTS input on Keithley 6221 ignored
Replies: 4
Views: 22142

Re: RTS input on Keithley 6221 ignored

Hello Mark Thank you for quick response. I have discussed the serial port definition in the Keithley 6221 document with Dale C in the past. Keithley do not stick to the official RS232 standard if that standard actually ever existed. I base my interpretation of the standard on the sources found in th...
by chrissa
June 13th, 2013, 8:13 am
Forum: Other Keithley Instrument Products
Topic: RTS input on Keithley 6221 ignored
Replies: 4
Views: 22142

RTS input on Keithley 6221 ignored

Hello I emailed this question to on the 7th of June to this email address ([email protected].com) I had no response. Maybe I should have posted this on the forum from the beginning. Here we go... __________________________________ Look at the attached - in the pdf file. 1. I have enabled HW f...
by chrissa
September 6th, 2012, 4:15 am
Forum: Current Sources
Topic: Erroneous current outputs during customs sweep
Replies: 1
Views: 11062

Erroneous current outputs during customs sweep

I need help. I have a brand new Keithley 6221 set to all its default factory settings. The default Triax connections are used which is Current Source Lo connected to inner shield and Outer shield connected to earth ground. The inner shield and outer shield is not connected, i.e. the current source i...

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