2 HOLD / ZERO (4SEC)
HOLD: Short press - Freezes the values shown on the display. “HOLD” will be displayed in
the upper left of the screen when in hold mode. Short press again to turn off HOLD. The display
will become active again.
ZERO: Takes a reading and subtracts that value from all future readings. ZERO is activated
with a long press(4 seconds). A “Z” will appear in the lower left of the screen to indicate the
meter has had a user zero applied. NOTE: The meter will revert back to factory zero each time
it is shut off.
2A. Ambient ZERO: Place the sensor in the measurement location with the test source
off. Wait 2-3 seconds for the system to take a measurement of the ambient light levels.
Perform a long press (4 seconds) to record an Ambient Zero. The meter will subtract
the ambient light reading from all readings taken until a new zero is performed or the
meter is turned off. Turn the lamp on and measure only the light supplied from the test
lamp.
2B. Dark ZERO: The ILT750 comes with the factory zero setting pre-programmed and
does not require a user dark. To perform a dark zero, cover the sensor with an opaque
object, wait 2-3 seconds and long press the zero button for 4 sec.
3 UNITS
Short press to toggle units and calibration factors.
Though µW/cm2/nm is becoming a more predominantly used set of units for testing blue lights
used to reduce bilirubin levels in the blood, there are still many sources and light meters that
offer the units of W/cm2. Rather than requiring 2 sensors or 2 calibrations, The ILT750 can
switch between W/cm2/nm and W/cm2 with the touch of a button. The units will be shown on
the display along with the numerical values. The ILT750 will auto-range and the prefix will
update to indicate the correct light level(p, n, u, m). For example, values less than 1
µW/cm2/nm will be shown as nW/cm2/nm and values higher than 999 µW/cm2/nm will be
shown as mW/cm2/nm.
4 GRAPH MODE
Short press to cycle through the graphing functions.
The Graph button has four functions that cycle
forward
each time button 4 is pressed. Start,
Stop, Stats, Exit. It is not possible to return to a previous screen.
GRAPH: Changes the display to graphing mode and begins plotting the results and temporarily
storing the readings for final data analysis.
STOP: Stops graphing and holds the display showing the last 60 results(30 seconds)
ILT750-BILI454 Manual Rev A, Dated 4/22/2021
Page number 4 or 7
