FBII Omni-408A, Installation And Setup Gude, Page: 78 / 96

OMNI-408A Installation and Setup Guide
A–2
1234 3 (1st round) 1234 3 2 (single round)
1234 3 (2nd round) 1234 3 (resulting data)
1234 3 (resulting data)
NOTE: Parity is a number derived automatically by the dialer utilizing a mathematical
formula (modulo 15). For example: 123 3 adds up to 9. This is subtracted from the next
highest multiple of 15; in this case, 15 - 9 = 6. If the CS receiver accepts a valid parity digit,
it considers the data transmission valid, delivers a “kissoff,” and processes the data. The
parity digit is not displayed. Its only purpose is for validation of data transmitted. It is not a
programmable digit; it is generated automatically by the dialer when the parity option is
selected in programming question 04, location 2. The obvious advantage of using parity is
speed. The transmission time between dialer and receiver is shorter because fewer digits are
transmitted with it as opposed to without it.
Extended (3X1 Ext. or 4X1 Ext.)
The Extended Reporting Format: AAA EZ or AAAA EZ
Where:
AAAA = 3- or 4-digit account number (programming questions 09 and 10)
E = Single-digit Event code; it is the first of the 2 programmable Reporting code digits
Z = Zone or user identifier; it is the second of the 2 programmable Reporting code digits
Extended format is transmitted in Pulse and involves a 3- or 4-digit account number followed
by a double-digit reporting code. The only purpose for using the Extended format (sometimes
known as Universal or Expanded format) is to be able to transmit more than 15 codes to the
CS receiver. It does this by extending the Event code from the previous round of data,
resulting in a 2-digit reporting code. It can be transmitted with parity (2 rounds of data) or
without parity (4 rounds of data). There are 15 possible event codes, each of which can have
15 different zone or user identifiers. As a result, a total of 225 individual events can be
reported. Examples:
3X1 Ext. w/o Parity 3X1 Ext. w/Parity
123 3 (1st round) 123 3 (2nd round) 123 3 6 (1st round)
333 1 (3rd round) 333 1 (4th round) 333 1 5 (2nd round)
123 31 (resulting data) Burglary Zone 1 123 31 (resulting data) Burglary Zone 1
4X1 Ext. w/o Parity 4X1 Ext. w/Parity
1234 3 (1st round) 1234 3 (2nd round) 1234 3 2 (1st round)
3333 1 (3rd round) 3333 1 (4th round) 3333 1 2 (2nd round)
1234 31 (resulting data) Burglary Zone 1 1234 31 (resulting data) Burglary Zone 1
Partial Extended (3X1 Part. Ext. or 4X1 Part. Ext.)
The Partial Extended Reporting Format: AAA EZ or AAAA EZ
Where:
AAAA = 3- or 4-digit account number (Program Questions 09 and 10)
E = Single-digit Event code; it is the first of the 2 programmable Reporting code digits
Z = Zone or user identifier; it is the second of the 2 programmable Reporting code digits