[SI-LIST] Ground Connection for Current Probe
- From: vinod ah <ah.vinod@xxxxxxxxx>
- To: SI-LIST <si-list@xxxxxxxxxxxxx>
- Date: Wed, 23 Jan 2013 17:53:39 +0530
Hi All,
I am using a current probe of 50MHz bandwidth with 15A max AC current. The
probe is used for measuring in-rush current due to hot-plugging of a device
(the device is bus powered and hence inrush current) to a host which
supplies power to the device. The current probe has ground connection tip
at probe tip end (the other end of probe is a BNC connector which gets
connected to oscilloscope where it makes solid ground connection with
respect to oscilloscope ground).
Since the current probe works on Hall effect/sensing magnetic friend around
a current loop, Is it necessary to connect the ground tip to board ground
before i make the current measurement. Since there are 2 domains involved
i.e. Fields (magnetic fields) and induced current through the probe and the
current is of slightly higher frequency (around 1MHz), not sure on the
grounding aspect.
Regards
Vinod A H
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