3-1
SECTION 3 – DESCRIPTION
3.1 Connectors and probes
The instrument is supplied with three sets of probes. Each probe fits into a unique socket on the front
panel. A LED adjacent to each socket indicates which probe to use in the selected range.
Plane Probe
The blue Plane Probe and Clip are used in the PLANE SHORTS range. The Clip is attached to the
shorted track, and the Probe used to sense the response on the plane being stimulated by the Plane
Stimulus.
Current Trace Probe and Drive Source leads
The magnetic Current Trace Probe is used to detect currents flowing through tracks, components, etc.
without making physical contact. The Probe must be used in conjunction with the Drive Source output, as
it is tuned to the frequency of the AC current supplied by the Drive Source when TRACE is selected.
The Drive Source leads (a pair of red and black clips) are used to inject the current into the board.
When Track Voltage, 200mA or 2A ranges are selected the Drive Source output is a DC voltage (red clip
positive) which can be used to stimulate the board under test.
Needle Probes
The Needle Probes are used in all ranges except TRACE and PLANE SHORTS. The red (positive) and
black (negative) markings on the probes indicate direction of current flow in Track Current or Track
Voltage.
Plane Stimulus leads
Four test clips (colour-keyed) used in the PLANE SHORTS range to stimulate the shorted plane. The blue
lead is connected to the Top Left corner of the plane, red lead to Top Right, green lead to Bottom Left,
and yellow lead to Bottom Right.
Headphone socket
When the headphones are connected to this socket the internal speaker is switched off. Use only 3.5mm
stereo jack plugs in this socket. A stereo to mono adapter is required for use with an earpiece.
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