NF CA5350, Инструкция по эксплуатации

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4.2 Cancelling the dark current of sensor
CA5350 4-5
When auto current suppression is completed, message indicating the completion of
process will appear for 1 second.
C U R R E N T S S U P P R E S S I O N
S S A U T O S C O M P L E T E !
Current value and range of current suppression will be automatically renewed to the
value selected by auto current suppression. Output voltage of
CA5350
is also almost 0V.
After the above message appears, current suppression will not change automatically.

Precautions when running auto current suppression

Turn OFF Zero Check.
Running auto current suppression with
ZERO CHECK ON
will show the following
message and it will not run. Turn
OFF ZERO CHECK
.
For the Zero Check

“4.1 Zero Check”
C U R R E N T S S U P P R E S S I O N
S S A U T O S Z c h k S O N

When over input is detected, auto current suppression will not run.
If over input is detected in
CA5350
because of large I/V gain and large dark current of
sensor, the following message will appear and auto current suppression will not run.
C U R R E N T S S U P P R E S S I O N
S S A U T O S O V E R
After making appropriate settings such as lowering
I/V GAIN
, change to the state where
maximum input is not detected.

During auto current suppression, ensure that input current does not fluctuate.
Fluctuation of current from sensor during auto suppression will results in process
failure. The following message will appear for about 1 second after process failure.
Current suppression setting (range, current value) will return to the settings when
running auto current suppression.
C U R R E N T S S U P P R E S S I O N
S S A U T O S E R R O R
Even when the maximum range (800µA range) of current suppression is set and when
the input current cannot be cancelled (current from sensor exceeds ±800µA), the above
message will appear.
Similarly, when a lot of noise is there in input current, process may fail.
Even if the above message not appearing, if input current fluctuates in auto current
suppression or too much noise, output voltage of
CA5350
after completion of auto
current suppression will largely deviate from 0V. As required, re-adjust the current
suppression in the
MANUAL
mode.