Guardian Technologies Ademco VISTA-40 - Manual (Page 72)

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In 4+2 reporting a unique 2-digit code for each zone is reported. A 4-digit
account number followed by a 2-digit code is sent, where the first digit is the
actual event, such as in ALARM, RESTORE, or TROUBLE, etc., and the second
digit of the code represents the "zone" where the event occurred. (but not
necessarily the actual zone number). Each code in itself is unique to a specific
zone. If desired, the actual zone number can be reported by entering the
corresponding 2-digit zone number (ex. zone 1= [0] [1]; zone 63= [6] [3]). A
report might appear as:
1 2 3 4 5 9 ("5 9" might be a unique "TROUBLE RESTORE, ZONE 25).
4+2 Express ADEMCO's Express format provides the same information as the 4+2 format, but
with three differences:
1. The data is transmitted in DTMF (Dual Tone Multi-Frequency, known as
"TouchTone", at the rate of 10 characters per second). This greatly
decreases the time it takes a report to go through to central station. An
average 4+2 Low Speed report might take as long as 20 seconds to
complete its report, but 4+2 Express takes under 3 seconds.
2. Two message rounds are eliminated by the use of a checksum digit. Instead
of the communicator sending 2 rounds per report, it sends only 1 round with
a checksum digit at the end. Doing this also helps in decreasing the time it
takes for a report to be sent.
3. The handshake frequency is 1400 Hz followed by 2300 Hz, and the kissoff
frequency is 1400 Hz.
Ademco High Speed
Reporting
ADEMCO's High Speed format transmits data in DTMF at a rate of 10 characters
per second. The handshake frequency is 1400 Hz followed by 2300 Hz, and the
kissoff frequency is 1400 Hz. The message contains 13 digits as follows: A 4-
digit account number + eight channels of zone information (1-8 or duress plus
9-15) + one status channel, which identifies the type of events being reported in
the eight zone locations. A typical High Speed report will be kissed off in under 5
seconds.
Channels 1 through 8 could have one of the following conditions:
1 = NEW EVENT
2 = OPENING (Status Channel Always = 2)*
3 = RESTORE
4 = CLOSING (Status Channel Always = 4)*
5 = NORMAL, NO EVENT TO REPORT
6 = PREVIOUSLY REPORTED, NOT YET RESTORED
* NOTE: Channel 1 will contain the user ID 1-9, A-F if Open/Close reporting is
Êenabled.
The status channel might have one of the following conditions:
1 = DURESS (For Duress Plus Channels 9-15 Only)
2 = OPENING
3 = BYPASS (For Channels 1-8 Only)
4 = CLOSING
5 = TROUBLE (For Channels 1-8 Only)
6 = SYSTEM STATUS:
¥ AC LOSS in Channel 1
¥ LOW BATTERY in Channel 2
¥ PROGRAM TAMPER in Channel 3
¥ POWER ON RESET in Channel 4
7 = NORMAL ALARM STATUS (Chnls 1-8 Only)
9 = TEST REPORT
A typical high speed report may look as follows:
1234 5115 5555 7 (Acct #1234 with alarms on channels 2 and 3)
High Speed Format
Limitations
1. When using Ademco high speed, remember there are only 15 channels
available, plus a duress channel. If more than 15 zones are being used, they
will have to share channels.
2. With Ademco High Speed reporting, channels 9-15 cannot report troubles or
bypasses. Use these channels for zones that will not report these conditions.