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3.1.2
A/B Switch and Dual Alarm Monitor Modes
1. Connect the designated receiver output cables to connectors A and B under the PORT 1
and PORT 2 markings on the rear panel of the switch. Connect the RF jacks to the
appropriate downstream equipment. Carefully tie wrap the cables to the cable tie bar at the
rear of the switch.
Note: For operation as a single A/B Switch, use PORT 2 only.
Note: If the total cable length exceeds 1,000 feet, termination per requirements of the
RS485 Card Adapter Specification may be required.
2. Using a modular power cord, connect the switch to a convenient source of AC input
voltage, or (if it is to be powered by direct current) connect the DC terminal block IN
terminals (shown in
3. Perform any optional steps required for your system. See
4. Upon initial power-up, the front panel (green) NORMAL and (red) DUAL FAILURE
LEDs will be lit, indicating that the internal power supply is operational. Proceed to
Section 4 on Page 13
3.1.3
Optional Setup Procedures
Use the following optional procedures to setup the RDS (if applicable to your system
configuration).
1. Connect RS-485 interface cables from a personal computer (PC) with switch monitoring
software to the RS-485 IN and OUT connectors on the rear panel of the switch. This
connection can be via a daisy chain to/from other switch panels. (See
REMOTE
MONITOR
2. Connect two 22-26 AWG wires to the alarm terminals at the rear panel labeled ALARM
NO (normally open) and C (common). (See
of the wires can be connected to the user's alarm panel at the installation location.
Warning: The RDS is factory set for –48 VDC or 120 VAC operation. For 240 VAC operation,
refer to subsection 3.2, 220 to 240 VAC Operation, below.
Figure
12) to
48 V battery power.
–
to set up and operate the switch.
RS-485
IN
OUT
IN
UP TO EIGHT
RS-485 BUSES
Figure 13. Daisy Chained RDS Units
ADCP-61-810 • Issue 4 • September 2004
Section 3.1.3 on Page
RS-485
RS-485
OUT
IN
OUT
UP TO 32 REDUNDANT
AMP SWITCHES IN
EACH DAISY CHAIN
FOR A SYSTEM MAXIMUM OF 250
Figure 12
on previous page.) The other ends
© 2004, ADC Telecommunications, Inc.
11.
Figure
13.)
9402-B
Page 11
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