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SC720/SC820
System Adjustments
The Decode Characters are NORMALLY set to 3 for single SC720/SC820 Data Repeater communications.
However, the SAFECOM system can be configured with a second a hot-standby/backup system capability. The
Decode Character for the backup SC720/SC820 should be set to 5.
On the JP1 header, DK1000 Controller Board, INSTALL a shorting plug on pin group #5, for 5 characters. In this
configuration, an RF2000 or SC4000 will communicate with the 3 character configured SC720/SC820 as
Primary. If the 3 character configured SC720/SC820 (Primary) fails, the 5 character SC720/SC820 (Backup) will
assume the capability for Primary data repeater communications.
The following tables specify SC9000 Framer requirements, for radio timing parameters, when configured for
Backup SC720/SC820 Data Repeater communications.
Local Initiate Leading
Local ACK Leading
Table 6: SC720/SC820 Decode Character = 3 for Primary SC720/SC820
Local Initiate Leading
Local ACK Leading
Table 7: SC720/SC820 Decode Character = 3 for Backup SC720/SC820
5.4
Setup for an Addressable Data Repeater
The SC720/SC820 can be configured to a operate as an Addressable Data Repeater when multiple
SC720/SC820s are operating on the SAME radio communications frequency. When the Addressable Data
Repeater feature is Enabled, the SC720/SC820 will ONLY be activated for repeater communications in response
to messages from an RF2000 which is operating on the same RADIO communications frequency and has the
same Address Code. A unique Address Code is assigned by the SCS000 receiver for each RF channel (1 to 8).
Each RF channel communicates with the SC720/SC820 via an RF2000 radio modem.
The SC720/SC820 is ENABLED for Addressable Data Repeater communications when a shorting plug is
INSTALLED on pin group #4, JP1 header, on the DK1000 Controller Board.
To DISABLE the SC720/SC820 for Addressable Data Repeater communications, REMOVE the shorting plug
from pin group #4, JP1 header, on the DK1000 Controller Board.
When the SC720/SC820 is Disabled for Addressable Data Repeater communications, ALL SAFECOM
messages from an RF2000 operating on the same radio communications frequency, regardless of the RF
channel number, will activate the SC720/SC820.
5.4.1
Setting the Address Codes
To set the Address Codes for SC720/SC820 Data Repeater communications with a specific SC9000 channel
number,
configure the
shorting plugs
on the JP1
header, DK1000
Controller
Board, as
follows:
5.5
Summary of IP1 Header Pins
The following is a functional summary of the eight (8) pin groups located on the DK1000 JP1 header:
Pin Group #
1
2
3
4
90007-201C
11
Pin Group #
1
3
OFF
2
OFF
1
OFF
Table 8: DK1000 Controller Board Pin Settings
Function
1 of 3 Address Codes to specify the
RF Channel Number
2 of 3 Address Codes to specify the
RF Channel Number
3 of 3 Address Codes to specify the
RF Channel Number
Enable or Disable the Addressable
Repeater Feature
Table 9: IP1 Header Pins
SC720/SC820 Operation and Installation Guide
9
chars
Remote Initiate Leading
7
chars
Remote ACK Leading
chars
Remote Initiate Leading
9
chars
Remote ACK Leading
SC9000 Channel Number (1-8)
2
3
4
OFF
OFF
OFF
OFF
ON
ON
ON
OFF
ON
Pin
Group #
5
6
7
8
Page 20
5
6
ON
ON
OFF
OFF
OFF
ON
Function
Specifies 3 or 5 Character Message
Leading Requirements
Enable or Disable the Transmit of the Test
Data Pattern
Enable or Disable the Squelch Repeat
Mode
Enable or Disable Normal SC720/SC820
Data Repeater Comms
© 2004 Bosch Security Systems
11
chars
9
chars
11
chars
9
chars
7
8
ON
ON
ON
ON
OFF
ON
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