coloured BNC test leads

Ask any questions relating to the PicoScope hardware or kit contents here.
If you have any questions prior to purchasing the kit post them here.

coloured BNC test leads

Postby Jabsam » Mon Jan 21, 2013 2:03 am

Hi friends,

There is one thing I wanna confirm here. As we know, Pico have four coloured BNC test leads, blue,red,green &yellow. I suppose blue used for CHA, red for CHB, green for CHC, yellow for CHD. While we are connecting blue lead to CHA and the fixed ground cable of blue connecting to battery negative, then CHB&CHC&CHD don't need to ground again with their removable ground cables. Am I right?
Jabsam
User
User
 
Posts: 23
Joined: Wed Mar 09, 2011 1:17 pm

Re: coloured BNC test leads

Postby Autonerdz » Mon Jan 21, 2013 3:17 am

Right. Channels have a common ground.
Tom Roberts
(The Picotologist)
Autonerdz
User avatar
Autonerdz
Zen Master
Zen Master
 
Posts: 272
Joined: Wed Nov 20, 2002 4:19 pm
Location: Washington State USA

Re: coloured BNC test leads

Postby Lee » Tue Jan 22, 2013 10:27 pm

Just to enhance on Toms answer,

Should you be testing multiple, what are perceived to be 'dirty signals' i.e. MAF, MAP, LAMBDA, Some Pressure Sensors or any other analogue sensor which gives off a lot of noise (where the Filtering, and Analogue to Digital Conversion is done inside the ECU) , you can still add more earths using the detachable ground leads on the other 3 channels to try and improve the signal quality, but i must admit this is a rare occassion that the extra grounds are required so one really does do the job the majority of the time hence the blue lead has the fixed ground.

Kind Regards

Lee :D
Lee
Advanced User
Advanced User
 
Posts: 79
Joined: Fri Feb 19, 2010 10:36 am


Return to Automotive kit hardware

Who is online

Users browsing this forum: No registered users and 1 guest