UIT2400 INSTRUMENTATION MANUAL REV A, May 2020
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a calibration factor of 1e-3 (A)(cm2)(W-1) =.000001 amps, 1e-3 * 1e-3.
15F. Min-Max (and FW Peak)
: The min-max settings allows the user to change the
functionality of the min-max button. When in Min/Max mode, the reading will only change for
Max when a reading that is higher than the displayed value is read, and for Min when a
reading that is lower than the displayed value is read. When FW peak is displayed the min-
max button will change to a FW Peak button. FW Peak uses the fastest scanning speeds to
see rapid changes in light intensity and uses less averaging. For Very Fast moving light
sources such as scanning lasers or pulses of light, use FW peak. For better averaging we
recommend using min-max when speed is not a factor.
15G. 5V Bias On or Off:
The defaults setting is off as there are numerous sensors that can be
damaged or read incorrectly if bias is applied.
Turn bias on when to increase the response time
for silicon sensors or if a 5V Bias was used during calibration (noted in Calibration sheet).
Recording to File Settings
15H. Recording Interval:
Ranges from 1 second to 1 hour, or sample for faster speeds.
Sample: when selected, the record interval and sample time are synched. Ie if sample time is
set .1, the meter will record a value every .1 seconds.
Trend Chart Settings
15I. Chart Type:
Select a bar graph or line graph
.
15J. Update Interval:
Select the time between updates to the display from .1 sec to 1 hour.
Error and Warning Level Settings
15K. Light Stack Setting:
Settings for light stack will determine when the screen turns Red,
Yellow, and Green.
Trigger Type: There are three available triggers to initiate a
change in the indicator color.
Not used: An error will appear if light stack is selected when not
used is applied.
Low: Used when a reduction in light output causes an error, i.e.
phototherapy, under cure of product, Display testing, QC.
High: Used when an increase in light output could cause an
error. i.e. optical hazard, QC.
Range: For when a rise or fall of light level can be problematic.
Warning Level: Threshold for turning the display Yellow
Error Level: Threshold for turning the display Red.
Set up error messages:
1. The target/warning /error levels need to be numbers.
2. For Low trigger, the error level must be less than the Warning level
i.e. target is 1 mW/cm2 or higher (1e-3), a warning level (5e-4) (display turns yellow) when the
