To activate the REM feature, gently
pull out the silver telescopic antenna and press in the REM POWER button
located under the tilt stand on the back of the device. The series of six LEDs
will illuminate and blink and beep twice as the REM function goes through the
diagnostic routine. This verifies that the system is working correctly. To test
the REM field, move your hand around the antenna area, then touch the top of
the device. The red LED will be illuminated and blink as the REM field is
interrupted. There is also a specific tone associated with each LED. On
the right side of the meter, there is a REM RANGE button. The REM RANGE button
is for sensitivity and range detection adjustments. There are five increments
for sensitivity adjustment which can make the meter more or less sensitive
depending on the circumstances and location in which it is being used. Press
the REM RANGE button to select your sensitivity level. You can experiment with
the sensitivity level by selecting different sensitivity levels and moving your
hand closer or further from the antenna. There is also a REM ZERO button next
the REM RANGE button that will allow you to Zero out the REM at any time.
is very important that you hold the meter relatively low toward the battery
compartment to prevent possible mutual interference from your hand. If you hold
the meter low, your hand will not be near any circuitry, and the device will
not detect the energy in your hand. The REM circuit will also automatically
“zero” or baseline every 5–7 seconds. If you place the device on a conductive
material like metal, please allow this time interval to baseline. The meter
will detect anything that interrupts the REM field around the antenna that is
metal or conducts electricity. It
is important to note that there could be some interference of the REM field
when the device is within certain proximity of fluorescent lights, or a
high-power handheld radio frequency communication device. Also, be aware that
once the REM power has been activated, it will remain powered until you turn it
OFF. Be sure to turn it OFF when not in use to preserve your battery power.
1. Turn on the Shadow Deviation Detection (SDD) circuit located behind the Mel
Meter tilt stand. The SDD circuit will beep twice and then default to the least
sensitive detection range, sensitivity level #1. There is a total of 5
2. On the side of the Mel Meter is a momentary push button labeled "SDD
Press this button twice. You will hear a beep each time the button is pressed.
Pressing it twice will increment the SDD to sensitivity level #3 based on the
initial power up default starting at level #1.
3. Position the Mel Meter on a tripod or flat surface so that the light
intensity sensor located above the thermocouple temperature sensor is aimed in
the direction of the Red LED illuminator. The Red LED illumination source can
be located up to 75' away (Long Range).
4. Test the detection sensitivity by directing the Red LED illumination beam to
the side of the SDD detector so that only minimal light is received. The SDD
will produce a descending tone pattern. Then, move the illumination so that the
SDD receives more light and you will hear an ascending tone pattern.
Important Note: The SDD performs a diagnostic test and recalibration every 5
seconds. So, if the processor diagnostic & calibration routine falls within
the time of your test, it could momentarily reverse the tone pitch. This will
be automatically corrected during the next 5 second cycle.
5. Once you get things established, you can try different techniques. To use
the Mel-SDD as a diffuse reflective sensor, adjust the sensitivity to Level #
5. Then turn on the Mel Meter flashlight. Allow the detection circuit to
stabilize with nothing in front of the Mel Meter. Now move your hand in front
of the Mel Meter through the flashlight beam. The SDD will detect your hand up
to a 4' distance. Be sure that you are in complete darkness when you do this. To
detect a self-illuminating source, turn the Mel flashlight OFF. Strike a match,
use a lighter or turn on a flashlight within the Mel-SDD field of view.
As always, adjust the sensitivity for best performance based on type of light
source, proximity or separation distance and individual application
circumstances. If you lose track of which sensitivity setting you have, simply
turn the SDD OFF then ON to reset back to sensitivity level #1. Also, be aware
that stray light from windows, cars, moonlight, flashlights etc. can all
influence the SDD.
The SDD works with:
* RED & GREEN LEDs or even a flashlight
* A RED or GREEN Laser Grid
* A RED or GREEN Laser Pointer
IMPORTANT: Do not attempt to open this device.
It will disturb the calibration of the REM field. Do not touch the screws that
hold the case together as they could alter specific stress points on the main
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