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Hello, I have 11 probe tips model # 650-6122-00 that need repair. Can you please provide information on how to get diagnostics and repair.
Repair?
In addition, I have one model # 650-6192-00 that also needs diagnostics and

Hello,

I am a professional music producer / mixer / recording studio owner, & a bit of an amateur tech. I'm ramping up my knowledge as a tech & beginning to run into problems that require a scope to access, & am considering buying your TBS1052C.

Some of my tube pre-amps & compressors run off of 600V DC, & I see the TBS1000 series has a max input of 300V RMS.. My question is, is it possible to simply buy a set of attenuator probes? Or will this setup potentially damage the scope?

I'm also all ears if you think you produce a scope that is better fit for my application.

Thanks for your time!

My TDP0500 failed calibration due to the 4.25V range is not working. The 42V range passed calibration. Any ideas on how to resolve this?

My 2450 seems to be restricting voltages to 40 V. For example, I put a 50 V input into the device and received a readout of 40V. Anything below 40V below worked fine. What might the issue be?

We intended to know the resistance variation of the object under the application of the pressure by 4-wire resistance measurement. The object itself has 2-10 milliohm. Under the application of the pressure, it is expected to vary and we need to know its difference accuracy within 0.4 milliohm. In other words, we need the digital multimeter which can differentiate the resistance change within 0.4 milliohm or so. We have Keithley 2000, Keithley 2400 and Keithley 2182. Does one of them work for this purpose? Do you have any suggestion? Thanks,

I have one Keithley 2000 digital multimeter. I would like to do the 4 wire resistance measurement with the resistance in milli-ohm scale. I am wondering if Keithley 2000 provide constant voltage or constant current during 4-W resistance measurement. In either cases, what is the supplying voltage or current?

As part of our EMI requirements, we need all exposed metallization to be electrically connected to the PWB ground plane, with <2.5 milliohm resistance. By using the RATE and FILTER functions we are able to get rid of the noise, but the readings often drift into the negative ohms range. Can we interpret this reading like an absolute value, or is this just so far down in the mud that the meter tolerances are causing this. If one can't consider this as an absolute value, can we assume that we have close to a 0.000 ohm measurement?

Hello,
I need a replacement for the 3792-KIT104-R.

I have a Keithley 3720 Dual 1×30 Multiplexer Card for my 3706A. I cannot seem to locate a way to plug the card into any external devices (voltmeter, current source, etc.) and would like to know if there is one.

Hi, I Need a replacement for either 370A or 370B. Can you recommend a suitable replacement?