7
Using the 3M
™
ScanEM-QC
Electromagnetic Near-Field
Probe Kit
Basics of Operation
Both ScanEM-QC Probes come with the batteries installed and are ready to
work right out of the box.
The best way to hold the ScanEM-QC Probe is in the palm of your right
hand, just as you would hold a pen, with your thumb on the red Operate
button and with your index finger above the Level dial and Sound On switch
(see illustration on page 6). The red Operate button turns on the power. The
ScanEM-QC Probe will be “on” as long as the button is held down.
The 3M
™
ScanEM-EQC Probe is a non-contact probe. Do not touch circuit
elements with the ScanEM-EQC Probes’s antenna. The test results may be
meaningless, and normal operation of the measured device may be influenced
by parasitic capacitance introduced by the ScanEM-EQC Probe in direct
contact. The ScanEM-EQC Probe itself may be damaged as well if it is
directly exposed to high voltage. The 3M
™
ScanEM-HQC Probe, however, is
designed to be put in direct contact with the insulation of the cable.
For the best results, position the ScanEM-QC Probe perpendicular to the
tested area. This way, stray electromagnetic emissions coming from the
outside of the measured area do not affect the ScanEM-QC Probe’s antenna
as much, and the ScanEM -QC Probe can pinpoint the source of the troubling
emissions with greater accuracy.
The ScanEM-QC needs a few seconds to “warm-up”
Î
Before scanning or taking measurements, allow a few seconds for the ScanEM-
QC Probe to stabilize after first turning it on.
