3.1.4
Sensitivity Factor Selection
Once the Active Channel has been selected, chose the appropriate sensitivity factor for that specific channel/detector by pressing the
FACTOR SHIFT/DATA DISPLAY button until the FACTOR SHIFT LED is illuminated. Select the applicable register (1-8) by using
the FACTOR SELECT button. Select register 1 if active channel is 1, select register 2 if active channel is 2, up to channel 8.
After selecting appropriate sensitivity factor, press the FACTOR SHIFT/DATA DISPLAY buttno until the DATA DISPLAY LED is
illuminated. The ILT1700 is now ready to display data from the detector connected to the active channel.
3.1.5
Bias Selection
Press 5V Bias button if you are reading a channel that is using a vacuum photodiode type detector (SED240 or SED220), or
for flash measurements.
3.1.6
Take a Measurement
Follow the steps below to take a measurement in manual mode.
3.1.6.1 Set Measurement Mode
Select measurement function by pressing either D.C. (signal)
button or INT button for continuous or integrated readings.
Remember INT will sum up the signal over that integration
time and D.C. mode will read the average steady state light levels
.
3.1.6.2 Zero the Detector
For a dark zero, cover the active channel detector with opaque object,
wait ten seconds and press ZERO button. For ambient zero, simply
press zero button for uncovered active channel detector for over one
second and release. (will subtract current zero from all future readings)
To return to internal zero, unplug the detector attached to the active channel
and press zero. Uncover the detector after zero-ing.
3.1.6.3 Display Measurement
At this point, the detector that is connected to the Active Channel will be measuring, and outputting the measurement to the ILT1700
display. For taking measurements on separate channels, simply use the Active Channel buttons to select the desired channel/detector,
making sure that the correct sensitivity factor has also been selected (see Section 3.1.4 for sensitivity factor selection).
3.1.6.4 Hold Function (Optional)
User has the option of pressing the HOLD button on the ILT1700 to freeze the reading display with its current value at any point of a
measurement.
A803 Multiplexer Instruction Manual Rev -
Page 6
9/22/
2011
Integrate
DC
5V Bias
Hold
