ADC RF Worx, Руководство пользователя

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ADCP-61-810 • Issue 4 • September 2004
Page 14
© 2004, ADC Telecommunications, Inc.
4.2 Calibration
—
Redundant Amp Mode
1. Momentarily press the MODE SELECT switch to CALIBRATION; note that the
CALIBRATION LED remains lighted (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 (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 (A or B) using the AMP SELECT toggle switch on the front
panel; the corresponding LED should light and remain lighted after the amplifier is
selected. The OPERATING LED should continue indicating green.
4.3 Initial Setup and Operation
—
A/B Switch Mode
4.3.1 Installing A/B Switch Mode Label
Included with the RDS is an add-on label ( Figure 16 ) that can be installed to identify any units
that are programmed for A/B switch mode operation. Using the SWITCHING THRESHOLD
switch and the left edge of the chassis for alignment, affix the label to the left end of the front
panel display as shown in
Figure 17 .
Figure 16. A/B Switch Mode Label
Note: The calibration process will monitor the amplifier gain and set the RDS to expect
that particular gain from the amplifier.
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 amplifier at
an acceptable signal level.
(–dB) PATENT PENDING
SWITCHING
THRESHOLD
PORT 1
PORT 2 A/B SWITCH
10138-A