ADC RF Worx, User Manual, Page: 19 / 26

ADCP-61-810 • Issue 4 • September 2004
Page 13
© 2004, ADC Telecommunications, Inc.
Figure 15. RDS Front Panel
4 SETUP AND OPERATION
This section explains how to set up and operate the RF Worx Redundant Switch (RDS) in
redundant amplifier mode, A/B switch mode, or dual alarm monitor mode. Included here are the
differences in setup and configuration, operation, and trouble-shooting.
4.1 Initial Setup and Alarm
Once the RDS and associated amplifiers are powered-up, set up and operate the RDS as follows
(refer to
Figure 15 above) :
1. Check that the front panel (green) NORMAL and (red) DUAL FAILURE LEDs are lit.
When both amplifiers are warmed up to ambient operating temperature, adjust their output
levels, then use the AMP SELECT toggle switch to select amplifier A or amplifier B for
calibration. Note that the corresponding LED (A or B) illuminates and the (yellow)
CALIBRATION LED begins to flash
2. Select the desired failure threshold (number of dB down from initial amplifier gain) by
observing the SWITCHING THRESHOLD seven-segment LED display at the left end of
the front panel while you momentarily press the adjacent toggle switch up (to increase) or
down (to decrease) until the desired threshold number is displayed. The threshold is the
level below which the calibrated signal must drop before switching from the primary to the
standby receiver or amplifier.
Note: The system performs internal diagnostics after power-up to ensure proper operation.
After power-up a lower case “c” will be displayed for one minute. The “c” will
immediately disappear if communication with the Swatch switch monitoring software is
established. In rare instances, an A or B may show continuously in the display when
powering up. This indicates that an internal failure has occurred. For assistance, contact
ADC (see
Section 6 on Page 18 ).
Note: Be sure to make the final adjustment of each amplifier’s output before calibrating
the switch.
9216-D
PATENT PENDING