Testboy TB 29 Operating Manual page 20

Operating
The following appears when there is a short-cut between two wires (e.g. Wires 3 and 4):
The following is shown, for instances, if individual wires are interchanged:
In this example Wires "3" and "6" have been interchanged.
Presentation is such when, for instance, wires are completely missing or interrupted:
It is clear from this example that the transmitter has not received any feedback signal
from the receiver for Wires "3" and "6". Probable is either an inadequate contact or a ca-
ble breakage.
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Testboy TB 29