ADCP-61-810 • Issue 4 • September 2004
Page 16
© 2004, ADC Telecommunications, Inc.
1. While “locked onto” Port 1 display, momentarily press the MODE SELECT switch to
CALIBRATION; note that the CALIBRATION LED remains lit (steady yellow); after a
second, the red DUAL FAILURE LED will go out and the yellow SINGLE FAILURE
LED will light and remain on.
2. Select the remaining amplifier (or receiver) (B or A) with the AMP SELECT switch. Note
that the corresponding LED lights and the (yellow) CALIBRATION LED again begins to
flash.
3. Momentarily press the MODE SELECT switch to CALIBRATION; note that the
CALIBRATION LED remains lighted (steady yellow); after a second, the yellow SINGLE
FAILURE LED will go out and the green OPERATING LED will light and remain on.
4. Select the Primary Amplifier or Receiver (A or B) using the AMP SELECT toggle switch
on the front panel; the corresponding LED should light and remain lit after the amplifier or
receiver is selected. The OPERATING LED should continue indicating green.
5. For dual operation, repeat steps 1 through 4 after selecting Port 2.
4.6
Single A/B Switch Mode Operation
If only one port of the RDS is needed for A/B switch mode, use the same procedure to set up the
port, then calibrate the unused port with no signal present in order to remove the failure status for
the unused port. In the SWatch switch monitoring software, use the Edit Setup mode to fill the
description field for the unused port with “INACTIVE” to signify that the port is not currently
used.
4.7
Initial Setup and Operation
—
Dual Alarm Monitor Mode
Following the A/B setup procedure above will program the RDS in Dual Alarm Monitor Mode,
including installation of the A/B Switch Mode label. During the calibration procedure, the RDS
is calibrated for the “A” signal on port 1, then calibrated for the “B” side with no signal present.
Since the “B” signal level is below a detectable level, the RDS now knows to never
automatically switch to the “B” side. Once this has been done, the only way to switch receivers
from A to B is to use the AMP SELECT switch. The same procedure is followed for port 2 to
set it up for dual operation.
If only one port is used, the unused port should have its “A” and “B” sides calibrated with no
signal to clear the alarm status. Also, the edit setup window in the SWatch switch monitoring
software should be used to identify that the unused port is “INACTIVE” by entering this
description in the Amp Description field. Once the redundant switch and associated receivers or
amplifiers are powered-up, operate the switch as follows (see
Note:
To ensure reliable network performance, it is recommended that a failure test be
conducted to verify that the threshold setting switches the RDS to the backup receiver at
an acceptable signal level.
Note:
Be sure to make the final adjustment of the amplifier or receiver output
before
calibrating the switch.
