User Manual

ADCP-75-116 • Issue A • August 2001 • Section 4: Operation
Page 4-7
© 2001, ADC Telecommunications, Inc.
Figure 4-3. Signal Levels, Test Points, and Adjustments
BASELINE
INPUT SIGNAL LEVEL
(-25 to -35 dBm
COMPOSITE)
HOST UNIT
PRIMARY
ANTENNA
PA
REMOTE UNIT
BASE TRANSCEIVER
STATION
Fig 4-3
EXTERNAL
ATTENUATOR
TRANS-
MITTERS
RECEIVERS
0 to 30 dB
ATTENUATOR
(HOST REV ATT)
0 to 30 dB
ATTENUATOR
(HOST FWD ATT)
RF, OPTICS,
AND CONTROL
0 to 30 dB
ATTENUATOR
(REMOTE FWD ATT)
OPTICAL LINK
RF, OPTICS,
AND CONTROL
DUPLEXER
ADJUSTMENTS TO INPUT
SIGNAL LEVEL AS SET BY HOST
FORWARD PATH ATTENUATOR
ADJUSTMENTS TO OUTPUT
SIGNAL LEVEL AS SET BY HOST
REVERSE PATH ATTENUATOR
MAXIMUM OUTPUT SIGNAL
LEVEL AT STM ANTENNA PORT
ADJUSTMENTS TO
OUTPUT SIGNAL LEVEL
AS SET BY THE REMOTE
FORWARD ATTENUATOR