Instruction manual

Page 185
Hardware
P990 Self Test
If you enter 1 for this parameter, then the unit will perform a self-test. This
will confirm that the various parts of the circuitry are working correctly.
You will see confirmation messages that the clock and the EEPROM are
working correctly, and error messages for any parts that fail.
P991 Hard Test
When this parameter is selected, the unit will test the following in turn.
• LED’s. Watch them change colour as shown on the display, and
press, ENTER, if they operated as shown.
• Relays. Press a numeric key corresponding to the number of the
relay you wish to test, and the relay will change state each time the
key is pressed. If you press any other key, other than a valid relay
number, then the test will end.
• Segments. All the segments on the LCD are lit up, so you can see if
they all work. Press, ENTER, to end the test. The LED’s all go green
at the same time.
• Keys. You should press each key, to confirm it works, with a
counter showing how many more keys you have to press. Be sure
to press the CANCEL key last, as this will show if all keys were
pressed or not. If they were not, then an error message is displayed.
P992 mA Out Test
This parameter will allow you to force a specified current on the mA output,
to test the equipment that it is connected to, and to make sure the unit is
working correctly. The figure you enter will be generated by the mA output.
P994 Transducer Test
If you enter 1 for this parameter it will continually fire the transducer, so
you can check the wiring, until you press any key to cancel.
P995 Keys Test
You should press each key, to confirm it works, with a counter showing how
many more keys you have to press. Press the CANCEL key last, as this will
confirm if all keys were pressed or not. If they were not, then an error
message is displayed.