ADCP-61-810 • Issue 4 • September 2004
Page 17
© 2004, ADC Telecommunications, Inc.
Figure 18. RDS Front Panel
1. Select the desired failure threshold (the number of dB down from the original signal level)
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.
4.8
System Reset Procedure
Use the following procedure to clear all threshold settings and all calibration info. This
procedure should be used when re-deploying the RDS to a different location or application.
1. Power down (unplug) the RDS and remove all power sources.
2. While re-powering, hold the THRESHOLD switch
up
to enter Redundant Amp mode.
Hold the THRESHOLD switch
down
to enter A/B and Alarm Monitor mode.
3. Follow the setup procedures described in
5
MAINTENANCE
Maintenance requirements of the redundant amplifier switch are minimal, consisting merely of
periodic cleaning.
5.1
Preventive Maintenance
The outside of the redundant amplifier switch should be cleaned during routine headend
equipment maintenance.
5.2
Fuse Replacement
Note:
Be sure to make the final adjustment of the amplifier or receiver output
before
calibrating the switch.
Note:
To ensure reliable network performance it is recommended that a failure test be
conducted to verify that the threshold setting triggers the RDS alarm at an acceptable
signal level.
Caution:
For continued safe operation and to reduce the risk of fire, replace fuses with the same
type and rating
.
9216-D
PATENT PENDING