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by brian.d.smith
May 15th, 2014, 10:21 am
Forum: 2600 Series SourceMeter
Topic: Simulating Electrochemical sensors
Replies: 1
Views: 10069

Re: Simulating Electrochemical sensors

A sourcemeter has two force termails; Hi and Lo. With the 2450, you can force the current you desire from 0 to 40 mA quite easily under remote control with very high accuracy at low current. The issue is that there are two terminals. You want three terminals. You would have to figure out how to make...
by brian.d.smith
May 15th, 2014, 10:11 am
Forum: Organic Device Measurements
Topic: Keithley 2612A for measuring OFET Characteristics
Replies: 1
Views: 13541

Re: Keithley 2612A for measuring OFET Characteristics

You can create the family of curves with TSP Express. This is a web page in your 2612A. You connect the 2612A to your PC with the yellow LAN crossover cable. Instructions for using TSP Express are found in the 2600A quick start guide. After you have that working you can concentrate on finding the pr...
by brian.d.smith
May 15th, 2014, 7:39 am
Forum: Nanovoltmeters
Topic: 2182a performing zero current electrochemical measurement
Replies: 1
Views: 12980

Re: 2182a performing zero current electrochemical measuremen

Page 2-3 of the 2182A Reference Manual has this paragraph "Voltage measurements The Model 2182 has two voltage measurement functions: DCV1 and DCV2. DCV1 is available for input Channel 1, and DCV2 is available for Channel 2. DCV1 (Channel 1) has five measurement ranges (10mV, 100mV, 1V, 10V, and 100...
by brian.d.smith
May 15th, 2014, 7:27 am
Forum: Nanovoltmeters
Topic: 6221/2182 pulse delta noise level
Replies: 4
Views: 21687

Re: 6221/2182 pulse delta noise level

Have a look at the next page of the manual. The fastest integration time for remote operation is 0.01 PLC whch is 200 uS for 50 Hz and 166.67 uS for 60 Hz. I would try to run the test at 0.01, 0.02, 0.05. 0.1, 0.2, 0.5, 1.0 PLC to create the curve of FIg 3-1 for your device and your cabling in your ...
by brian.d.smith
May 15th, 2014, 7:07 am
Forum: PicoAmmeters
Topic: Overflow while doing current measurement in 6487
Replies: 3
Views: 23690

Re: Overflow while doing current measurement in 6487

From the 6487 Reference Manual page 4-2

"If the instrument displays the OVRFLOW message on a particular range, select
a higher range until an on-range reading is displayed. Use the lowest range possible without
causing an overflow to ensure best accuracy and resolution."
by brian.d.smith
May 15th, 2014, 6:54 am
Forum: 2400 Series SourceMeter
Topic: 2400 usage h24
Replies: 3
Views: 15535

Re: 2400 usage h24

Yes you can use the 2400 continuously.

For continuous measurements, you can use a software package such as Labview.
by brian.d.smith
July 15th, 2013, 8:05 am
Forum: 2600 Series SourceMeter
Topic: Pulse mode in 2602 using LabView
Replies: 15
Views: 48993

Re: Pulse mode in 2602 using LabView

I would use Test Script Builder to import the factory scripts from your 2602 for the pulse generator and the buffer print routines. Look over the scripts carefully and see if there is possibly a mis-match between what you are sending as calling augments and what the scripts are expecting and can acc...
by brian.d.smith
July 12th, 2013, 2:15 pm
Forum: 2600 Series SourceMeter
Topic: Pulse mode in 2602 using LabView
Replies: 15
Views: 48993

Re: Pulse mode in 2602 using LabView

Is your sourcemeter a 2602 and not a 2602A nor a 2602B? If so, my apologies. My comments assumed that you were using a 2602A or 2602B.

How is your PC interfaced to your 2602?
by brian.d.smith
July 12th, 2013, 2:05 pm
Forum: Low Current Measurements
Topic: Measuring internal resistance of a current source
Replies: 4
Views: 19839

Re: Measuring internal resistance of a current source

You should not require the 2400 to characterize your current source. Measure the voltage across your 200 ohm resistor installed in parallel with your current source. The voltage is V1. Measure the voltage across a 1 megohm resistor installed in parallel with your current source. The voltage is V2. Y...
by brian.d.smith
July 12th, 2013, 1:38 pm
Forum: 2600 Series SourceMeter
Topic: Pulse mode in 2602 using LabView
Replies: 15
Views: 48993

Re: Pulse mode in 2602 using LabView

TSP Express is a web page on your 2602. You access it by connecting an ethernet crossover cable between the LAN jack on the 2602 and your PC. Launch a web browser on your PC and type the IP address of your 2602 into the web browser address bar and hit enter. The 2602 IP address is accessed from the ...
by brian.d.smith
July 12th, 2013, 11:01 am
Forum: 2600 Series SourceMeter
Topic: Pulse mode in 2602 using LabView
Replies: 15
Views: 48993

Re: Pulse mode in 2602 using LabView

The instrument is capable of measuring both V and I while sourcing either V or I. The script that you are calling only measures the opposite of what is being sourced. The script can be modified to measure and return readings for both V and I. Have a look at page 558 of the Reference Manual. The inst...
by brian.d.smith
July 12th, 2013, 8:49 am
Forum: 2600 Series SourceMeter
Topic: Pulse mode in 2602 using LabView
Replies: 15
Views: 48993

Re: Pulse mode in 2602 using LabView

What device or material are you pulsing? That will help to craft a response to your question. In general, if the pulse low is zero, then there is nothing to measure. To obtain more pulses, increase your 2 to a larger number. If you are asking for more readings per pulse, as in looking for rise times...
by brian.d.smith
July 11th, 2013, 9:22 am
Forum: 2600 Series SourceMeter
Topic: Pulse mode in 2602 using LabView
Replies: 15
Views: 48993

Re: Pulse mode in 2602 using LabView

Attached is a 26XX script that creates 1x and 2x freq voltage pulses from smua and smub using the trigger model and specifically the trigger blender to enable the fast pulse to start on the rising edge and falling edge of the slower pulse. Since you are creating pulses I thought that this might be h...
by brian.d.smith
July 11th, 2013, 8:30 am
Forum: 2600 Series SourceMeter
Topic: Pulse mode in 2602 using LabView
Replies: 15
Views: 48993

Re: Pulse mode in 2602 using LabView

The trigger model is a method to make your measurements synchronous with an event. You have to completely set up the trigger model. You cannot place a trigger model command in a non-trigger model script.
by brian.d.smith
June 11th, 2013, 7:56 am
Forum: 4200-SCS Semiconductor Parameter Analyzer
Topic: Using Agilent's IC-cap with the 4200
Replies: 8
Views: 32386

Re: Using Agilent's IC-cap with the 4200

The IC-CAP drivers are unsupported and as such are not available for download. I have emailed them to you for you to try along with installation instructions.
by brian.d.smith
June 10th, 2013, 3:48 pm
Forum: 2600 Series SourceMeter
Topic: 2636B interfacing with LabView
Replies: 4
Views: 19405

Re: 2636B interfacing with LabView

Attached is a TSB script that holds Vd constant and sweeps Vg. It extracts Vthreshold. To save the data of a tranconductance sweep, you would use an array/list to save the values. My script is only keeping track of the recent measurement and the previous measurement for Id and Vg. In my script, I en...

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