6
Setting reference
To set reference press SET button bellow the reference you want to set. Current intensity
value is stored as reference value.
Using input filter
Light detector has two input filters. Fast filter is intended for measurement of values
changeable in time. It provides fast response with slightly increased noise level. Slow filter
suppress noise but has rather slow response time. Thus it is suitable for measurement of in
stable conditions when light intensity does not change fast.
Setting input filter
To adjust input filter press the
FILTER
button. The filter will toggle from slow to fast and
vice versa with every pres of the button.
Diagnostic modes
The device provides four diagnostic modes which are useful for troubleshooting. The
diagnostic modes are: zero offset, full scale, negative full scale, common mode rejection.
Mode
Description
Zero offset
Both differential inputs of A/D converter are switched to ground.
Full scale
Negative input of A/D converter is grounded. Positive is switched
to the voltage reference.
Negative full scale
Positive input of A/D converter is grounded. Negative is switched
to the voltage reference.
Common mode rejection Both differential inputs of A/D converter are switched to voltage
reference.
Switching to diagnostic mode
To switch to diagnostic mode press
DIAG
button. First diagnostic mode is selected. With
every consecutive press of
DIAG
button device will switch to next diagnostic mode. After
last diagnostic mode the device switch back to normal measurement mode.
While in diagnostic mode you can switch to normal measurement mode anytime by pressing
RANGE+
,
RANGE-
or
AUTO/MANUAL
buttons.
Basic maintenance tasks
Replacing bulb in the light source
To replace the bulb in the light source follow the steps described bellow.
•
Switch off the device.
•
Disconnect cable between control unit and the light source.
•
Remove four screws on the back cover of the light source using Philips screwdriver.
•
Carefully remove the back cover together with cylindrical side cover.
•
Disconnect internal connector so you can completely remove back and side cover.
•
Remove four screws which hold the bulb assembly and remove bulb assembly.
•
Loosen screws holding the bulb in place and remove old bulb.
•
Install new bulb in the same position as the original and tighten screws.
•
Put bulb assembly back to its place and fasten it by four screws.
