ANSITE AST-2008D2 User Manual - Page 8

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protect each alarm system from interfering each other, the wireless signal can use different

encoding style for different alarm system, you can add detector to an alarm system by encode the

detector.

Each alarm system has itd unique wireless communication code, this include 8 bit address code

A0,A1,A2,A3,A4,A5,A6,A7, and 4 bit zone code( or date code) D0,D1,D2,D3, each set of alarm

system has only one address code, but can have several zone code. The address code is for

communicaton only, we printed it out on the bottom side of the alarm set, marked as "Product No",

the zone code is used to distingish different alarm signal from different detectors (or same kind

detectors with different encoding). For example, we have 4 LED indicator on the keypad of the

alarm set, the "alarm 1" LED is corresponding to zone 1, the "alarm 2" LED is corresponding to

zone 2, the "alarm 3" LED is corresponding to zone 3, the "alarm 4" LED is corresponding to

zone 4,ect.

We use the "short jumper slip" option to realize the encoding, you can use a screw driver to take

off the screw of the infrared detectors and open the cover, on the power switch side of the

electronic circuit board, you can see 36 metal pins, this 36 metal pins is used to encode the 8 bit

address code and 4 bit zone code.

Fig.4 buit-in circuit of infrared detector

You can also open the emmiter part of the door entry contacts, there are also 36 metal pins on the

side of the electronic circuit board, this 36 metal pin is also used to encode the 8 bit address code

and 4 bit zone code.

Fig.5 buit-in circuit of door entry detector

There are total 3 row pins, each row has 12 pins, the 12 pins in the orw near the IC SC2262(or

HS2262, or PT22620) is high electric level, marked by H , the 12 pins in the row near the side of

the electric circuit board is low electric level, marked by L,the 12 pins in the middle row is to be

set by short jumper slip, if a pin in the middle row is connected by a short jumper slip to the H row

pin, we called the pin encoded as "1", if a pin in the middle row is connected by a short jumper

slip to the L row pin, we called the pin encoded as "2", if a pin in the middle row is not connected

by a short jumper slip (or in float state), we called the pin encoded as "0", the 8 pins in the middle

row for address code has three encoding state, "1", "0", "2" . The 4 pins in the middle row for

zone code has only two encoding state, "1', "2", that is say the 4 bit zone code has no floate state

"0".

Fig.6 illustration diagram of infrared detector encoding

Fig.7 illustraton diagram of door entry detector encoding

Fig.8 the middle row all float state

Fig.9 the 8 bit address code in the middle row all in float state "0", the zone code is

"2211"(zone 1).