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Search found 239 matches

by Nathan S
January 17th, 2012, 1:34 pm
Forum: 2400 Series SourceMeter
Topic: Conductivity Measurement using four point probe
Replies: 3
Views: 17880

Re: Conductivity Measurement using four point probe

You need whatever cabling is necessary to connect to your four point probe. You might need 2 of the Model 1754 Universal Test Lead Kits or perhaps 2 of the Model 1681 Clip-On Test Leads. Here is a link to a PDF of our Test Leads and Probes: http://www.keithley.com/data?asset=50660 . This is probe-de...
by Nathan S
January 17th, 2012, 12:03 pm
Forum: Electrometers
Topic: 6517B coulombs effective input impedance
Replies: 3
Views: 14128

Re: 6517B coulombs effective input impedance

It should be range independent and there should be approximately 1.4M Ohms.
by Nathan S
January 13th, 2012, 8:36 am
Forum: 2400 Series SourceMeter
Topic: Immediately source at configured compliance?
Replies: 4
Views: 16590

Re: Immediately source at configured compliance?

It sounds like you are hitting range compliance then. I haven't run the specific program, but on the 2400 there are two types of compliance, range and source. The source is the standard one that you are setting to a higher level. However, after setting that you should change your current measure ran...
by Nathan S
January 11th, 2012, 7:34 am
Forum: Other Switches
Topic: RE: Keithley S46 Switch
Replies: 5
Views: 21933

Re: RE: Keithley S46 Switch

That serial number should be a Model S46-66661234567.
by Nathan S
January 11th, 2012, 6:37 am
Forum: Instrument Accessories & GPIB
Topic: water temperature measurment
Replies: 1
Views: 10444

Re: water temperature measurment

It may work for awhile, but that is not what the RTD is designed for and we do not guarantee its performance.
by Nathan S
January 10th, 2012, 1:52 pm
Forum: 2400 Series SourceMeter
Topic: Is negative on 2420 connected to earth ground?
Replies: 1
Views: 8525

Re: Is negative on 2420 connected to earth ground?

The Lo Input/Output of the 2400 line is not connected to earth ground. It is spec'ed at >1 GOhm Common Mode Isolation. You can certainly tie it to ground externally if you choose, but it is designed to float up to 250Vpeak away from earth ground.
by Nathan S
January 4th, 2012, 11:23 am
Forum: 2400 Series SourceMeter
Topic: Conductivity Measurement using four point probe
Replies: 3
Views: 17880

Re: Conductivity Measurement using four point probe

I would go to the following link and request the Low Level Measurements Handbook: http://www.keithley.com/knowledgecenter In that book, take a look at section 3.3, Low Resistance Measurements and section 4.7.3 Resistivity Measurements of Conductive Materials. There is a 4 point probe section there t...
by Nathan S
January 4th, 2012, 8:59 am
Forum: 2400 Series SourceMeter
Topic: 2440 SourceMeter to source current (5Amp) and a Keithly 2182
Replies: 1
Views: 8699

Re: 2440 SourceMeter to source current (5Amp) and a Keithly

Yes, if you need higher current handling than the 2400 can provide, the 2440 will work in tandem with the 2182A to do low resistance measurements in a 4 point probe configuration. Just use the configuration in the manuals to do delta mode measurements, or if you prefer straight, DC, they will work f...
by Nathan S
January 3rd, 2012, 9:04 am
Forum: Electrometers
Topic: positive to negative IV sweep
Replies: 1
Views: 9535

Re: positive to negative IV sweep

I ran into the same issue that you did when I initially tried it. However, the 850 error was due to the step size setting that you set when going from 50V to -50V. You must make sure that your step value is negative for that sweep. Then you should be good to go. For example, I did +50 to -50V with -...
by Nathan S
January 3rd, 2012, 6:31 am
Forum: 4200-SCS Semiconductor Parameter Analyzer
Topic: Keithley 4205-RBT (Remote Bias Tee)
Replies: 1
Views: 9698

Re: Keithley 4205-RBT (Remote Bias Tee)

From the 4200-PIV data sheet:

4200 REMOTE BIAS TEE TYPICAL PERFORMANCE:
Band Pass: 10kHz–300MHz (3dB)
by Nathan S
December 30th, 2011, 10:45 am
Forum: 2400 Series SourceMeter
Topic: 2425 Front Panel Measurement in Remote Mode
Replies: 1
Views: 8841

Re: 2425 Front Panel Measurement in Remote Mode

The issue you're seeing is because when in remote there after the sweep, it has finished all the triggering set up for the sweep so it is not setup such that it has any more triggers to take readings. You could put it back to Local mode after you have read the data from the output queue into your La...
by Nathan S
December 29th, 2011, 7:02 am
Forum: Series 2700 Multimeter/Data Aquisition/Switch System
Topic: Measuring PT100 with Slow Rate and Filter average of 10
Replies: 3
Views: 14363

Re: Measuring PT100 with Slow Rate and Filter average of 10

Baruch, Try the code below. It seems to be working as evidenced by the now lit FILT annunciator light. Again, you will only be returned one reading, but the ADC will take 10 measurements, then digitally average those for that one reading you see. Hope this helps. *RST *CLS TRAC:CLE func 'temp' func ...
by Nathan S
December 28th, 2011, 8:39 am
Forum: Series 2700 Multimeter/Data Aquisition/Switch System
Topic: Measuring PT100 with Slow Rate and Filter average of 10
Replies: 3
Views: 14363

Re: Measuring PT100 with Slow Rate and Filter average of 10

MEAS:TEMP? will do a reset of all the settings you just set up, then take a measurement. Try a READ? instead.
by Nathan S
December 22nd, 2011, 8:39 am
Forum: 2600 Series SourceMeter
Topic: Synch'ing smua and smub buffers on 2602A
Replies: 4
Views: 15826

Re: Synch'ing smua and smub buffers on 2602A

Unfortunately, basetimestamp only has 1 second resolution, so yes, this is a limitation of that command.
by Nathan S
December 22nd, 2011, 7:12 am
Forum: 2600 Series SourceMeter
Topic: Synch'ing smua and smub buffers on 2602A
Replies: 4
Views: 15826

Re: Synch'ing smua and smub buffers on 2602A

Andy, Probably the easiest way for your issue would be to use the smuX.nvbufferY.basetimestamp command for each SMU. You can print the value for both smuA and smuB and then have a time difference between when their respective measurement timestamps are. You can then use that to synchronize your data...
by Nathan S
December 22nd, 2011, 6:50 am
Forum: 2600 Series SourceMeter
Topic: Max Number of Pulses
Replies: 2
Views: 10755

Re: Max Number of Pulses

If you wish to use that same code, you can use Test Script Builder to Import Existing Project from Instrument. Import the Factory/KIPulse project. You can then rename the project to your own name and change the max pulse value in the lines of code where the PulseIMeasureV function is. Hope this helps.
by Nathan S
December 19th, 2011, 1:29 pm
Forum: Series 2700 Multimeter/Data Aquisition/Switch System
Topic: output is not correct
Replies: 3
Views: 13943

Re: output is not correct

I assume you're using one of our 77XX family of cards with the 2700 to take the measurement. The maximum voltage for those cards is 300V, though some models have a lower rating. 9.9E+37 is an overrange error stating that the value you are trying to measure is larger than the range (in your case, lik...
by Nathan S
December 19th, 2011, 9:13 am
Forum: 2400 Series SourceMeter
Topic: Can 2400 do mixed scan?
Replies: 2
Views: 10870

Re: Can 2400 do mixed scan?

Aki, Yes the 2400 can do mixed Source I and Source V sweeps. I would take a look at Section 10 in the 2400 User's Manual which is all about sweeping. In there, look for the fourth type of sweep called "Source Memory sweep." You get up to 100 points where you can change most parameters on a point by ...
by Nathan S
December 19th, 2011, 7:55 am
Forum: Series 2700 Multimeter/Data Aquisition/Switch System
Topic: Duty Cycle measurement with 7708 card?
Replies: 1
Views: 8793

Re: Duty Cycle measurement with 7708 card?

As an actual measurement, we do not have duty cycle as an option with your setup. You could take data and as high a sampling rate as the 2750 can do, either with your own software or ExceLINX, and they try to recreate the waveform or do your calculations with that, but I would guess that we could on...

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