The LED light will blink a long blink followed by three groups of blinks with pauses in
between each group. A group of blinks represents one digit of a three digit number. For
example, the number "257" would appear as follows:
long blink signifies start of number
pause
two blinks digit "2"
pause
five blinks digit "5"
pause
seven blinks digit "7"
pause
long blink start of new cycle
A small number which does not require three digits will have leading zeros appended and
three digits will still be blinked. A zero is represented by a half width blink. For example the
number three will be:
long blink start of number
pause
half width blink digit "0"
pause
half width blink digit "0"
pause
three blinks digit "3"
pause
long blink start of next number
It may take a little practice to discern the difference between the digit "0" and the digit "1",
but with practice it is quite easy.
With an understanding of the above method of blinking a three digit number with the LED,
proceed to test the installation of the mux box as follows:
(1) After power is first applied to the mux box, the LED will blink out the rotary switch
settings until the first alarm switch changes state (a door is opened or closed). This
includes the tamper switch on the mux box, so remove the mux box door before
applying power and performing this test. The LED will alternate between blinking the
remote unit number of the mux box (the bottom two rotary switches) and the number of
doors wired to the box (the top two rotary switches). Since there are only two switches
blinked at a time, a leading zero will be appended to form a three digit number. Verify
that the rotary switches are properly set by counting the LED blinks to see that they
match the switch settings.
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