HP 8153A - Page 227

Perform each step in the tests in the order they are given using the
corresponding test equipment.
1. With the HP 8153A turned off, insert a Sensor Module into channel A. The
other channel should be empty.
2. Turn power on and check that all display segments are lit for approx.
2 seconds and no error message occurs. SELFTEST SELFTEST is then
displayed for less than half a second.
3. Press all the front panel keys in turn and watch the display. Except for the
channel key, either the display should change or you should hear a beep if
the key is functioning properly.
4. Cover the sensor input to avoid light input. The blue ferrule cap supplied is
not sufficient to stop all light, you can put this cap on the ferrule and then
cover it with a finger.
5. Press zero and check that proper zeroing is performed: The message
Zeroing is displayed at the bottom of the display, and — — flashes above
it while zeroing takes place. The process should take about 20 seconds.
6. Switch olT the instrument, remove the module from channel A and replace it
in channel R.
7. Switch the instrument on. After the selftest, leave it for 30 seconds or so {to
allow the Peltier Regulator to settle).
8. Repeat steps 4 and 5 for channel B.
HP-IB Interface Test (Optional)
For this test you will need a controller/computer with HP-IB capabilitie.s.
1. Connect the HP 8153A to the controller via the HP-IB.
2. With the HP 8i53A switched on, sent the *IDN? query to the instrument
from the controller.
3. Check that the RMT indicator is lit on the display. This indicates that the
instrument has received the query.
4. Read the reply from the HP 8153A. This should be a string of the form
HEWLETT-PACKARD, 8153A, 0, n.n, where n.n is the firmware revision of the
software.
Function Tests D-7