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Search found 1415 matches

by Andrea C
July 1st, 2020, 8:09 am
Forum: Resistivity Measurements
Topic: Resistance measurement during pulses
Replies: 5
Views: 235

Re: Resistance measurement during pulses

Sorry, I do not have the same in SCPI. Do you have a constraint that prevents using TSP command set? TSP can do 100% of what SCPI can; TSP can do a lot more too. Use of SCPI when TSP is avail is a rare choice for me. As for the other question about 'are you forced to use digitizer': I would say no. ...
by Andrea C
July 1st, 2020, 7:50 am
Forum: DMM6500 Bench/System DMM
Topic: trigger.BLOCK_WAIT not working as expected
Replies: 2
Views: 52

Re: trigger.BLOCK_WAIT not working as expected

Event detectors can latch events. Since your event timer is essentially free running (count = 0), your BLOCK_WAIT is proceeding (too soon) due to a latched timer event from an "old" EVENT_TIMER1. You can optionally clear as you enter wait blocks: trigger.model.setblock(2, trigger.BLOCK_WAIT, trigger...
by Andrea C
June 18th, 2020, 5:21 am
Forum: DMM6500 Bench/System DMM
Topic: DMM6500 errors
Replies: 9
Views: 1881

Re: DMM6500 errors

Did you get an RMA and send it in for in-warranty service? I imagine Germany is the closest repair depot for you.
by Andrea C
June 18th, 2020, 5:14 am
Forum: Remote Instrument Communication (Programming) Examples
Topic: SCPI code for 2450
Replies: 1
Views: 69

Re: SCPI code for 2450

The 6487 and the 2450 are very different types of instruments. The commands will have several differences. I suggest you determine the functional way the 6487 was used. Did you make use of the voltage source? Or did it just measure current? To have the 2450 SourceMeter behave in similar way, have it...
by Andrea C
June 18th, 2020, 5:02 am
Forum: DMM6500 Bench/System DMM
Topic: How to report bugs
Replies: 1
Views: 80

Re: How to report bugs

Ideally, you can contact your "local" Tektronix support. In the States and the ".com" site, we have this page: https://www.tek.com/support From there you can open a web ticket or call one of the phone numbers. That page shows: Europe, Middle East & Africa: toll free:00800 2255 4835 other: 41-52 675 ...
by Andrea C
June 18th, 2020, 4:49 am
Forum: 2657A High Voltage SourceMeter
Topic: RS-232 commands
Replies: 2
Views: 85

Re: RS-232 commands

The software commands of the 2410 are very different from the software commands of the 2657A. The 2410 has a SCPI command set. The 2657A is a Test Script Processing enabled product, or TSP. In both cases, the commands are just strings of ASCII characters, so your same methods for writing and reading...
by Andrea C
May 22nd, 2020, 6:36 am
Forum: 4200-SCS Semiconductor Parameter Analyzer
Topic: PMU and waveform capture test mode
Replies: 1
Views: 107

Re: PMU and waveform capture test mode

The Pulse Measure Unit (4225-PMU) uses full width half max pulse width definition method:
FWHM_pic1.PNG
FWHM_pic1.PNG (21.17 KiB) Viewed 93 times
ITM Settings:
FWHM_pic3.PNG
FWHM_pic3.PNG (39.26 KiB) Viewed 93 times
Results:
FWHM_pic2.PNG
FWHM_pic2.PNG (22.74 KiB) Viewed 93 times
by Andrea C
May 22nd, 2020, 6:02 am
Forum: DMM7510 Graphical Sampling DMM
Topic: Temp reading (thermistor) breaks with 1.7.0e
Replies: 3
Views: 75

Re: Temp reading (thermistor) breaks with 1.7.0e

I confirm the RTD display oddities with firmware 1.7.0e on DMM7510.
Oddly enough, at same firmware level on DMM6500, it is OK.
I'll open an official bug report for it on the DMM7510 for thermistor and RTD temperature reporting.
by Andrea C
May 22nd, 2020, 5:41 am
Forum: Series 2700 Multimeter/Data Aquisition/Switch System
Topic: Reading Thermocouple-Values with Python
Replies: 7
Views: 395

Re: Reading Thermocouple-Values with Python

Changing the instrument state (measure function) requires some time, so it is expected that the scanning rates will slow down. Group the channels of same measure type together to minimize how many range changes are required. Reducing the NPLC can reduce the time required for each measurement, but is...
by Andrea C
May 21st, 2020, 7:00 pm
Forum: 2400 Series SourceMeter
Topic: Four-terminal sensing with the BNC
Replies: 2
Views: 124

Re: Four-terminal sensing with the BNC

Sounds like you have four of the BNC to single banana plug similar to Pomona 1894. Is your DUT floating? Does the DUT have any shielded enclosure? For the source meter, it only cares about the center pin signal from each of the four BNC cables. Technically, you don’t have to connect the shields to a...
by Andrea C
May 21st, 2020, 4:24 am
Forum: 2400 Series SourceMeter
Topic: 2400 - Sourcing voltage and measuring current independently
Replies: 1
Views: 77

Re: 2400 - Sourcing voltage and measuring current independently

The single channel SourceMeter cannot do this. The measured current will always be what flows between the HI and LO terminals. This is also where the forced voltage is supplied. The Sense HI and Sense LO are high input impedance voltage measuring inputs. For your case, can you put the 2400 between d...
by Andrea C
May 21st, 2020, 4:15 am
Forum: Electrochemistry
Topic: How to send both a negative and positive voltage to two rods during electrodeposition
Replies: 3
Views: 215

Re: How to send both a negative and positive voltage to two rods during electrodeposition

I would think all you need is a voltage difference between the two electrodes. Like what a battery would impose if you connected it directly between the two electrodes. The SourceMeter can substitute for the battery. It can source positive or negative voltages and measure the current that results, i...
by Andrea C
May 15th, 2020, 6:57 am
Forum: 2450/2460 Touchscreen SourceMeter
Topic: Low resistance high current 4 point measurement with 2461 and scpi commands
Replies: 1
Views: 81

Re: Low resistance high current 4 point measurement with 2461 and scpi commands

To accomplish what you want, have the SMU force current, measure V, but report the value in Ohms. Instead, when you explicitly configure the SMU for measure R, it goes into a mode of trying to mimic a DMM. In this mode it makes decisions for you about how much test current to use based upon which oh...
by Andrea C
May 14th, 2020, 9:21 am
Forum: Electrochemistry
Topic: How to send both a negative and positive voltage to two rods during electrodeposition
Replies: 3
Views: 215

Re: How to send both a negative and positive voltage to two rods during electrodeposition

Not quite understanding. How many total rods do you have?

The 2450 is a single channel instrument. The voltage that the 2450 produces is between the HI with respect to the LO. You could connect it between two electrodes (anode and cathode) for example.
by Andrea C
May 11th, 2020, 3:36 pm
Forum: 2600 Series SourceMeter
Topic: Adding waiting time before a sweep
Replies: 2
Views: 103

Re: Adding waiting time before a sweep

In the example you cite, three timers are used to control the start of sourcing, start of measuring and the stop of sourcing. The trigger.timer[1] is used to control the start of sourcing and the period of the pulsed sweep. This timer[1] also starts timer[2] and timer[3] which are used as measure de...
by Andrea C
May 11th, 2020, 3:01 pm
Forum: Resistivity Measurements
Topic: Resistance measurement during pulses
Replies: 5
Views: 235

Re: Resistance measurement during pulses

There are some videos and sample code that might help: https://forum.tek.com/viewtopic.php?f=263&t=142177#p288517 Using the measure R function is just a short hand. The reported R will still be dependent on the underlying I and V values. No accuracy improvements, etc. The examples I point you to mak...
by Andrea C
May 11th, 2020, 2:44 pm
Forum: 2450/2460 Touchscreen SourceMeter
Topic: TSP code for 10Amp Pulsed IV - Rds(ON) measurement
Replies: 1
Views: 188

Re: TSP code for 10Amp Pulsed IV - Rds(ON) measurement

Video Link: Part 3: https://www.youtube.com/watch?v=9n4mgW2Btig Part 4: https://www.youtube.com/watch?v=mizxVYp-ezc Code for Part 4: --[[ *********************************************************** *** Copyright 2020 Tektronix, Inc. *** *** See www.tek.com/sample-license for licensing terms. *** ***...
by Andrea C
May 11th, 2020, 4:52 am
Forum: 2600 Series SourceMeter
Topic: differences in SCPI support between 2600, 2600A and 2600B
Replies: 1
Views: 46

Re: differences in SCPI support between 2600, 2600A and 2600B

The A and the B models will have same command set and features and can be used interchangeably. The A and B models have a trigger model (smuX.trigger.xxxxx commands); the original 2600 series models do not have trigger model. For A vs B differences, the 2600B added usb command interface and 2400 SCP...
by Andrea C
May 7th, 2020, 5:02 am
Forum: 2657A High Voltage SourceMeter
Topic: SCPI Command 2657A
Replies: 1
Views: 74

Re: SCPI Command 2657A

The model 2657A technically speaking does not have a SCPI based command set. Instead, it is one of our many Test Script Processor (TSP) products. Rather than SCPI commands that might look like ":SOUR:RANG xx" to control source range, it will have a command "smua.source.rangev = xx" to do the same. T...

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