Search found 47 matches

by Grant_Baker
Sun Mar 24, 2024 1:57 pm
Forum: PicoDiagnostics NVH
Topic: Harmonics
Replies: 2
Views: 128

Re: Harmonics

NVH: Noise Vibration Harshness. A harmonic is a noise associated with a vibration, and this vibration has a frequency. Frequency is in the time domain so it can be plotted by the scope. The frequency can be correlated with the speed of components: tires, CV axle, propeller shaft, engine, etc. The ro...
by Grant_Baker
Mon Mar 11, 2024 4:48 pm
Forum: PicoScope 7 Automotive software
Topic: Connecting scope stalls engine
Replies: 8
Views: 375

Re: Connecting scope stalls engine

See Steve Smith's reply in the below linked thread on shared and common grounds:
viewtopic.php?p=102838#p102838

Note all channel grounds should all be at battery negative and your channel inputs should be on the positive signal wires for all AC generating sensors.
by Grant_Baker
Sun Mar 10, 2024 4:58 pm
Forum: Diagnostic discussion
Topic: PWM Actuators.
Replies: 5
Views: 300

Re: PWM Actuators.

Some PWM actuators have constant power and the ground is PWM. For example a variable valve timing oil control valve solenoid. Key ON engine OFF you can apply your own constant ground briefly to look for the pintle bump in current waveform and pintle closing in the voltage waveform.
by Grant_Baker
Sun Jan 21, 2024 4:30 pm
Forum: PicoScope 6 Automotive software
Topic: Starter current signature RPM
Replies: 2
Views: 1643

Re: Starter current signature RPM

Why not just place your two vertical cursors at 720 reference points, let the software display rpm, then multiply by 2 to get the approximate rpm?

It would make more sense to capture the CKP and build a Maths Channel off of that CKP wave.
by Grant_Baker
Wed Dec 06, 2023 2:21 pm
Forum: Automotive kit hardware
Topic: TA330
Replies: 1
Views: 3458

Re: TA330

Just to be clear the TA330 is for low frequency smart key antenna/oscillator signals not high frequency wireless remote signals. In my experience you get a signal from the TA330 when you hold the TA330 tip within 12-18 inches of a smart key antenna(oscillator). For example an exterior handle antenna...
by Grant_Baker
Mon Jun 05, 2023 5:41 pm
Forum: Automotive kit hardware
Topic: ta43w
Replies: 1
Views: 1634

Re: ta43w

No. The TA432 resistance probe is designed to be used with BNC+ connections. BNC+ connections are only found on Picoscope hardware that can apply voltage to probes such as current probes without batteries and the resistance probe.

The Pico 4444 T & M scope uses D9 connections not BNC+.
by Grant_Baker
Sun Nov 06, 2022 7:52 pm
Forum: PicoScope 7 Automotive software
Topic: Increase time base while viewing saved waveform
Replies: 2
Views: 1508

Re: Increase time base while viewing saved waveform

Click on the magnifying glass, top right of graphical area. When the zoom controls open, look for "1:1". If the 1:1 is grayed out, you are already zoomed out fully showing all data in the capture/buffer. From what I can gather from your images, the dealer tech operating the scope has too little amou...
by Grant_Baker
Sun Nov 06, 2022 7:26 pm
Forum: PicoScope 6 Automotive software
Topic: No. samples
Replies: 2
Views: 2248

Re: No. samples

I don't know how the number in brackets is calculated or what it means. The number in brackets appears when Interpolation is turned on in Preferences. ON=smoothing of line connecting sample points. OFF=no smoothing/ straight lines connect sample points.
by Grant_Baker
Mon Oct 10, 2022 2:34 am
Forum: Diagnostic discussion
Topic: LIN Bus decoder & LIN Controlled Alternators
Replies: 14
Views: 32164

Re: LIN Bus decoder & LIN Controlled Alternators

Ben, I've been over and over your original post. I've tried to apply your technique to a LIN waveform from a 2018 Lexus. I can get through the LIN decode in Pico, exporting as .csv, saving as Excel workbook, found the applicable table in the AR6000 document and copied it into Excel. The problem I am...
by Grant_Baker
Thu Jul 28, 2022 3:07 pm
Forum: PicoScope 7 Automotive software
Topic: Picoscope 7
Replies: 1
Views: 1359

Re: Picoscope 7

I realize this doesn't answer your question specifically. For parasitic draw, I use trigger "none", then set the timebase according to how long I want to record the data in one buffer/waveform/screen, then verify the sample interval corresponds to the amount of detail I want. Start the scope wheneve...