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5V TSP Program

Model 2651A
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PCODIV2
Posts: 2
Joined: August 13th, 2012, 7:55 am
Country: United States
Location: Baytown, TX
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5V TSP Program

Post by PCODIV2 » August 13th, 2012, 8:18 am

We have a customer that has the 2651A.

They are having some issues with their TSP program.

> I have a problem about testing by TSP script. I am using TSB embedded
> function.
> To measure the current of my device, I use 2651A as a current meter. The
> power of my device is always 5V and supplied by other DC source, so 2651A is
> only used to measure current.
> I need to continuosly capture current value of device every 10us. Total
> capture number is 2000 times, and then print all current value on instrument
> output of TSB embedded.
> I found an example program for this test, but the result of this program is
> the printed current data not correct. The current of my device is from 0.1mA
> to 40mA, but the data printed is all at 1e-9 A level.
> Can you help me to check this issue? Or maybe you have other suitable script
> for my testing. Attachment is the script I use now. I run the function
> CapturePulseI.

I have attached program and a diagram of their test setup.

Any suggestions on how to get this to work?

Thanks in advance.
Attachments
KE2651A_Fast ADC Usage.tsp
TSP Test Script
(8.06 KiB) Downloaded 1073 times
keithley_test.jpg.jpg
Test diagram.
keithley_test.jpg.jpg (33.55 KiB) Viewed 8497 times

User avatar
PCODIV2
Posts: 2
Joined: August 13th, 2012, 7:55 am
Country: United States
Location: Baytown, TX
Contact:

Re: 5V TSP Program

Post by PCODIV2 » August 14th, 2012, 6:15 am

I have some additional information from our customer.
I try to use TSB Express to measure current, attachment "current_setting_0813" is the Express project used. The result data is almost correct, but there are something strange. Please see attached excel file.
1. Some small current data in excel file is minus value, I think it's not reasonable. If using 2651A front display to show current value, minus values does not happen. If using keithley 2000 multimeter with fastest rate, never see minus value also. Does it mean there are some setting wrong?
2. In attached file "nordic_sleep", the average value of all current data is about 7.6e-6 A, But if using the front display of keithley 2651A or 200 multimeter to measure the average current. The result is always about 1.5e-6 A. The average current is different between TSB Express result and front Display showing value.
I have attached some additional information.

Thanks.
Attachments
nordic_sleep.csv
Data File 2
(146.62 KiB) Downloaded 1083 times
becken_all.csv
Data File 1
(116.48 KiB) Downloaded 1093 times

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