Teledyne T703, T703U 8.4.9.3. Status Outputs

Teledyne API T703/T703U Calibrator Operation Manual General Troubleshooting & Service
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Table 8-9: Analog Output Test Function - Nominal Values Voltage Outputs
FULL SCALE OUTPUT OF VOLTAGE RANGE
(see Section 4.9.1.3)
100mV 1V 5V 10V
STEP % NOMINAL OUTPUT VOLTAGE
1 0 0 0 0 0
2 20 20 mV 0.2 1 2
3 40 40 mV 0.4 2 4
4 60 60 mV 0.6 3 6
5 80 80 mV 0.8 4 8
6 100 100 mV 1.0 5 10
If one or more of the steps fails to be within these ranges, it is likely that there has been
a failure of the either or both of the DACs and their associated circuitry on the
motherboard.
8.4.9.3. Status Outputs
To test the status output electronics:
1. Connect a jumper between the “D“ pin and the “” pin on the status output
connector.
2. Connect a 1000 ohm resistor between the “+” pin and the pin for the status output
that is being tested.
3. Connect a voltmeter between the “” pin and the pin of the output being tested (see
table below).
4. Under the DIAG SIGNAL I/O menu (See Section8.1.3), scroll through the inputs
and outputs until you get to the output in question.
5. Alternately, turn on and off the output noting the voltage on the voltmeter.
 It should vary between 0 volts for ON and 5 volts for OFF.
Table 8-10: Status Outputs Check
PIN
(LEFT TO RIGHT) STATUS
1 ST_SYSTEM_OK
2 SPARE
3 ST_CAL_ACTIVE
4 ST_DIAG_MODE
5 ST_TEMP_ALARM
6 ST_PRESS_ALARM
7 and 8 SPARE
07223C DCN6572