Search found 12 matches

by amb
Thu Dec 08, 2022 3:49 pm
Forum: M162 LCR Meter
Topic: Verifying Voltages
Replies: 0
Views: 8762

Verifying Voltages

I have just assembled the kit version of this meter and am at the point of checking voltages. Most are okay but I'm unsure about V- and VS-. I have:- V- = -4.58V VS- = -4.54V Are these okay? The table doesn't have a minimum or typical value for these two voltages. Edit: Having taken a look at the sc...
by amb
Mon Mar 07, 2016 7:14 am
Forum: DSO138
Topic: Scope stopped working
Replies: 3
Views: 5492

Re: Scope stopped working

I'd try a different power supply - the reading suggests the one you are using is not up to the job and is being dragged down as the 'scope starts.
by amb
Tue Mar 01, 2016 7:23 am
Forum: DSO138
Topic: Scope stopped working
Replies: 3
Views: 5492

Re: Scope stopped working

I've noticed that my DSO138 does something similar since I upgraded to the latest (060) firmware. However all I do is start monitoring the target signal and the 'scope quickly starts displaying correctly. Have you tried this (from the 060 firmware changelog):- "Auto-center trigger level to the ...
by amb
Wed Feb 10, 2016 8:03 am
Forum: DSO138
Topic: Probe calibration.
Replies: 5
Views: 7850

Re: Probe calibration.

Do a VPOS alignment as detailed in the instructions.

You can reposition the trace vertically using the + and - buttons when you have the vertical position indicator highlighted.

Similarly you can shunt it left and right when the horizontal position indicator is highlighted.
by amb
Fri Nov 20, 2015 9:00 am
Forum: DSO138
Topic: New kits - 13803/4K - F/W .050
Replies: 43
Views: 51614

Re: New kits - 13803/4K - F/W .050

Thank you for doing this. No need to apologise - you were just trying to protect your intellectual property which is perfectly understandable. I hope you win your battle with the counterfeiters. I have a number of Jyetech products and have enjoyed making/using them along with access to the great sup...
by amb
Fri Jul 03, 2015 6:10 pm
Forum: DSO138
Topic: New kits - 13803/4K - F/W .050
Replies: 43
Views: 51614

Re: New kits - 13803/4K - F/W .050

Luigi, I read the post and came to the same conclusion - if you have an older DSO138 you're stuck. If I had one complaint with the unit it would have been the noise on the signal which they seem to have fixed so I'd really like to get hold of the new firmware. I can sympathise to some extent with Jy...
by amb
Thu Jun 18, 2015 8:25 am
Forum: DSO138
Topic: The zero line does not coincide with the line of the screen.
Replies: 15
Views: 25877

Re: The zero line does not coincide with the line of the scr

Mike, Glad you got it sorted - I had the same problem when I first got mine going and found it by accident. It made sense when I found it but, as it occurs when you first get the scope going, you immediately think it's something you've done when assembling the kit and you fire up the soldering iron!...
by amb
Thu Jun 18, 2015 6:05 am
Forum: DSO138
Topic: The zero line does not coincide with the line of the screen.
Replies: 15
Views: 25877

Re: The zero line does not coincide with the line of the scr

I can't access my 'scope to double check but if I recall correctly you can reposition the trace vertically using the + and - buttons when you have the vertical position indicator highlighted.

Similarly you can shunt it left and right when the horizontal position indicator is highlighted.
by amb
Wed Jun 17, 2015 7:03 am
Forum: DSO138
Topic: Problem with SEN1 switch
Replies: 2
Views: 5253

Re: Problem with SEN1 switch

There's a post very early on http://www.jyetech.com/forum/viewtopic.php?f=18&t=452 that's about the firmware but he also had a problem with one of the SEN switches that should help point you in the right direction.
by amb
Tue May 26, 2015 6:44 am
Forum: DSO138
Topic: DSO138 Firmware Upgrade
Replies: 6
Views: 11218

Re: DSO138 Firmware Upgrade

I can't see that version on Jyetech's firmware page - perhaps it will get updated soon.

Andy