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175.0020 - DECADE Elite service manual - rev 03
OUT(put) test
Outputs can be set to active (press F2) or inactive (press F3).
Testing outputs is done using the factory supplied connector cable and
screw terminal PCB:
DECADE Elite I/O conn. Board (p/n 250.0131B)
DECADE Elite I/O cable 25M-25M, 1.8m (p/n 250.0131C)
Figure 3 I/O connection set supplied with the DECADE Elite.
Measure the output status of all individual outputs using a calibrated volt-
meter:
A. TTL outputs: connect the minus of the voltmeter to common (pin 25)
and the plus of the voltmeter the TTL output that needs to be tested.
In
an inactive status the voltmeter will display > 2.0V (usually about
3.3V), in an active state <0.8V (usually 0V).
B. Switching relays: are tested with an Ohmmeter (contacts open or
closed measurement). Connect the Ohmmeter to the relay pins that
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