Tektronix and Keithley

The 2281S is only able to create a battery model using a charging cycle and cannot generate models for non-rechargeable batteries. Andrea's suggestion provides much more flexibility and simplicity using a 2450 0r 2460 series source meter.

I think the most efficient solution is to develop a UTM and code the SMU to change levels. Timing control will be somewhat inaccurate but you should be able to achieve reasonable results. Set the PLC to 0.01 and use source/delay sequences in a test loop. If custom automation is not available in case...

I'm not sure what the issue may be. I checked the LabVIEW driver for the 6221 and found numerous line sends where multiple commands are concatenated using a semi-colon. If you happen to be using the National instruments VISA DLL in your code, I suggest that you use NI I/O Trace to determine if all t...

Without a custom library, the next possible solution would be to create a series of ITM to operate in a sequence where each ITM is performing a sample at 1 second intervals. Interval timing may vary if you use auto-ranging for both sourcing and measuring operations. Any other automatic functions may...

In general, it would appear that the video is non-functional and will need to be returned for repair. The serial number tag can be found close to the AC input on the rear panel of the instrument. The PCI slots inside the 4200 are used for instrument cards and is probably the reason why you are not g...

You might want to try setting the Reading Delimiter to String Terminator. I believe the 4200 is expecting a comma terminator. This setting is likely a legacy setting.

Prior to running the LabVIEW vi, you must activate the 4200/4200A KXCI interface.

A lot depends on the expected current measured during the voltage sweep. If the DUT is high impedance, the resultant current from the 40V sweep (-20V to +20V) will be relatively low and may not have change in current to impact the range sensitivity. For this reason, Autoranging is the best option, e...

2500 readings is the maximum buffer size for the 2281S. In order for the system to capture long battery discharges, it is necessary to increase the duration between samples. At 480 msec per reading at 2500 readings allows for 1200 seconds of test time or 20 minutes. Because you are using 1 Ah, the f...

We do not have a conversion example for using DLL in Python. From some web resources, it appears that you can use a C based DLL using C types in Python. Stackoverflow.com has a number of threads discussing the process. Here is one such thread: http://stackoverflow.com/questions/252417/how-can-i-use-...

It would be helpful to understand the instrument configuration and how it is being operated. Does this condition occur during automation, manual operation or both? Does this condition occur for random configurations or can you reproduce the condition? Has this problem been occurring since you first ...

Hello, Can you please provide a few more details regarding your measurement? I'm not quite clear what you are trying to measure. My assumption is that you are attempting to observe the actual current transition in real time between two bias conditions applied to an FET. If this is the case, the 2612...

What program environment are you using? I note you have a combination of LPT as well as the Instrument Command Language calls. I just recently started writing a script using an STM in ACS Basic. Is this ACS Basic that you are using to develop your code? My first suggestion is that you begin using Te...

What instrument are you using?

It is not likely Kickstart will support the 2600 series. The 2600B series does have an Ethernet port and comes with a crossover cable. You can configure an Ethernet/LXI connection to the meter and log onto the 2600B series IP address. When set to manual IP, the IP address is 192.168.0.2. Once you've...

I suggest returning the 2400 for repair. I do not recommend opening the 2400. Since the unit has completely failed, you can check the fuse first. If it has failed, the issue may be isolated to the power supply. While you might find a damaged part or power supply, there is no guarantee that the damag...

I suggest that you use pyVISA for making calls to and from the 2400. This simple script opens a VISA session, queries the 2400 and then performs a current sweep. import visa import numpy as np rm = visa.ResourceManager() rm.list_resources() ('ASRL1::INSTR', 'ASRL2::INSTR', 'GPIB0::24::INSTR') inst =...

Dale is correct regarding the non-rev models. The 2600 series is only capable of sourcing up to 20 nF load conditions. Usually, most solar cell testing involves sourcing voltage. With a non-rev model, you can try using only 2-wire mode or source current rather than voltage. Even these may not work w...

At 5A current, the maximum voltage is 20V. If you voltage range is set to 20V, the most current that the 2651A can source is 5A. If you're sourcing current above 5A, the load resistance must not be less than four Ohms. The error message may suggest that a measurement is not possible. As Brian has no...

I do not recommend any PCI based digital I/O cards. This leaves GPIB, USB or Ethernet. The easiest implementation would likely be a USB driven type. NI sells for fairly low cost digital I/O devices. The NI USB-6501 supports ANSI C however I suggest contacting the supplier regarding their driver supp...