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© 2014 All rights reserved. Data subject to change without notice.
GEM-II - Operation Manual
Rev. E | 2014.10
If a longer test sequence is desired, hold down the “UP” push-button for 10-seconds to activate
the low alarm relay, high alarm relay, low alarm LED, and high alarm LED for 15-minutes.
To abort this test, press the internal “UP” push-button or the exterior silence push-button and
everything will reset to normal operating condition.
If the GEM is equipped with a digital display, it will indicate “test” during this test period.
Voltage Output to Test Points “TP-1” and “TP-2”:
NOTE:
The voltage output when jumper J6 is set to the resting position “1” is 4.0 VDC.
Attach the meter leads to the two test points (TP-1 & TP-2) located just below the high alarm
relay (RL V2) on the main circuit board. Set the meter to volts DC with one decimal point. The
range of 0-4.0 VDC is equal to the full measurement range of the sensor. Eg. HVAC CO sensor has
a standard measurement range of 0 - 200 ppm. Therefore 4.0 VDC = 200 ppm.
Move the Jumper J6 to position 2 when monitoring the Internal Sensor or in position 3 for the
External Sensor.
7.3 Dip switch Package
Dip switch - position description:
•
5) Audible “on” / “off”
•
4) Audible alarm time delay “on” (5-min.)
•
3) High gas alarm time delay “on” (5-min.)
•
2) Low gas alarm time delay “off” (10-min.)
•
1) Low gas alarm time delay “on” (2-min.)
Located upper left corner of
main circuit board.
