TB 9-6625-2310-24
a. Connect data acquisition unit (DAU) MULTI-CH connector to TI MULTI-CH
connector using the AVA test set cable.
b. Connect dc power supply to DAU 28VDC connector; + to pin B and - to pin A (fig. 1).
Figure 1. DAU 28 VDC connector.
c. Set dc power supply for a +28 V output. Set DAU POWER switch to ON and allow
approximately 15 minutes for equipment warm-up.
8. Signal Output Level
a. Performance Check
(1) Set ACC 1 through ACC 4 channel switches to 100 mV/g.
(2) Connect equipment as shown in fig. 2.
NOTE
The output of the TI should alternate between two levels. At
this point (with the ACC SIGNAL SELECT dial set to (1:1))
the output to the multimeter should stabilize on about 5 Vdc
for approximately 6 seconds then stabilize on approximately
4 Vdc for 6 seconds. If the multimeter does not have sufficient
time to stabilize, reduce the input frequency on the external
clock input. Due to the design of the TI, the absolute value of
the output signals is not critical (within a few tenths of a volt)
but the difference between them is important.
(3) Set function generator for a 5 V pk-pk, 50 kHz output and multimeter for dc
voltage measurements, autorange.
(4) Set ACC SIGNAL SELECT dial to 1:1.
(5) Record multimeter indication high and low indications in table 3, ACC 1 row.