Cargo 211091, User Manual

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211091
9
Vedpak 113_Version 2_201109
211091
8
Vedpak 113_Version 2_201109
3. Capacitive Coupling to Parallel Floating Circuits.
Another characteristic of the open Circuit signal is that it
will capacitive couple to parallel floating circuits.
(See "Bench Tracing a Wire Harness").
4. Travels to ALL.
In Fig. 1 we are injecting an open circuit signal into a
parrallel circuit that has three wires. Two of those wires
lead to open switches and the other leads to the open/
break. As you can see the open circuit signal travels to
all open ends. This makes it necessary to isolate the
problem circuit away from the others.
5. Can only be present in a circuit when there is a
resistance greater than 100 ohms.
(See "Open Circuit Signal vs Grounded Circuit Signal")
6. Has NO Polarity.
The open circuit signal does not have a polarity there-
fore the reciever gives no direction indication as no
break in the wire. You will need to logically reason the
direction of the break in the circuit and then continue to
trace it.
7. 8 volt amplitude and 4 kilo-Hertz signal.
The 4 kilo-Hertz signal of the open circuit signal can be
detected by the receiver. (See "Locking the Sensitivity
for Open Circuits") You can also use the tester for open
circuit signal detection by direct contact. (See "Verify an
Open Circuit")
Problem circuit not isolated
Signals are all
over the place,
because the
problem circuit
has not been
isolated
The Receiver
The receiver is designed to detect the "Grounded Circuit signals"
and the open circuit signals from the transmitter.
Auto shut-off feature
The receiver will automatically shut-off within
30 sec. when it is NOT receiving a signal.
The "Open & Short Pick-Up" located on the
side of the receiver housing labeled "Open
and Short Pick-up" is to sense and detect
complete and open circuit signals.
The "Power/ Sensitivity Lock" button does a few things.
1. It turns the receiver ON and enters "pulse mode"
(See Pulse Mode").
2. Ot turns the receiver OFF.
(providing it is not receiving a signal).
3. It locks the sensitivity of the reception into desired
strengths. (See "Locking the Sensitivity").
4. It UN-locks the sensitivity and returns the receiver back to
"pulse mode".
The "Wire Harness Probe" is for
probing a harness to detect the open circuit
signal. (See "Tracing Circuits
that are shielded").
The "Open Circuit" LED on the
other side of the housing indicates
when it is receiving an open circuit
signal.
The "Direction to Short/Ground"
indicators point you in the direction to the
short or ground of the complete circuit.
(See "Direction to the Short Circuit".