Feb 25, 2019 - 04:01 AM
It filters out the DC offset voltage allowing a scope to view only the change in voltage.
For example, if you wanted to just view the alternator ripple but wanted to remove the overall system voltage this AC pass filter would allow you to do that. If system voltage is 13.5V with a 200mV AC ripple, it would filter out the 13.5V and only allow the 200mV AC voltage to pass through.
Feb 25, 2019 - 05:34 AM
Regarding "accessories to aid with diagnostics" with your 2-channel Snap-on scope.
Use longer leads:
Do low current:
Low Current Probe with Banana plugs (AES# 07-60-bp)
Do high current: