ADC RF Worx, User Manual

Page: 17 / 26

ADCP-61-810 • Issue 4 • September 2004
Page 11
© 2004, ADC Telecommunications, Inc.
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.
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
Figure 12 ) to
–
48 V battery power.
3. Perform any optional steps required for your system. See Section 3.1.3 on Page 11 .
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 to set up and operate the switch.
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
Figure 13 .)
Figure 13. Daisy Chained RDS Units
2. Connect two 22-26 AWG wires to the alarm terminals at the rear panel labeled ALARM
NO (normally open) and C (common). (See Figure 12 on previous page.) The other ends
of the wires can be connected to the user’s alarm panel at the installation location.
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.
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.
RS-485
IN OUT
RS-485
IN OUT
RS-485
IN OUT
REMOTE
MONITOR
UP TO EIGHT
RS-485 BUSES
UP TO 32 REDUNDANT
AMP SWITCHES IN
EACH DAISY CHAIN
FOR A SYSTEM MAXIMUM OF 250
9402-B