Abacus
4
Service Manual
38
5. CHECKING THE PROPER OPERATION
There is a built-in Self test and Service menu in each models.
5.1. Self test of ABACUS 4
5.1.1. Self test Screens
Self test can be used to check the operation of the
instrument.
The first panel shows general information about the
instrument (See menu on the left.)
Overall test
result is displayed, which can be
Successful
(in case of every test result is
OK
) or
Errors
(if
HIGH, LOW
or
ERROR
).
The
HGB dark
and
HGB light
(LED is on) value is
also displayed.
The second and third panel contains tested
parameters, as follow:
Measuring
Electrode voltage
,
current
and
offset
.
Amplifier
transfer by generating 20000
test
pulses,
incl. gain related
peak
value, noise related
dev
iation.
Amplifier
Noise test
during a 5-second period.
Atmospheric pressure stands for outer pressure.
Vacuum
reports pump operation (vacuum made by
the pump in a 10-second period of time).
Drift
represents pressure loss of vacuum measured
in a 10-second period of time.
Power
±12V
shows the amplifier voltage value.
Battery voltage
reports the voltage value of the
battery. If battery fails, system time will stop.
Core Temperature
shows
CPU temperature of the Control and Measurement Board (COMB).
At the end of a
result line status message
is displayed, which means that the actual test result
is at the normal range (
OK
), higher (
HIGH
), lower (
LOW
) than the pre-determined limits, or the
result is an error (
ERROR
).
