User's Manual

2-22
Figure 2-12 DS1/E1 UD-36( ) Receiver (Obsolete Version With Pedestal Switch) Controls,
Indicators, Test Points, and Connectors
RED LED INDICATES LOSS OF LOCK
FROM RECEIVE SIGNAL.
YELLOW LED INDICATES DEGRADED
RECEIVE SIGNAL.
GREEN LED INDICATES RCVR IN
SERVICE.
MONITOR POINT TO MEASURE DC
CONTROL VOLTAGE USED TO CONTROL
LO FREQ. SAME VOLTAGE IS DISPLAYED
ON RX (AFC MON) FIELD ON ANALOG
MONITOR SCREEN.
MONITOR POINT TO MEASURE DC
VOLTAGE INDICATING QUALITY OF
RECEIVE BASEBAND SIGNALS. SAME
VOLTAGE IS DISPLAYED ON RX (EYE MON)
FIELD ON ANALOG MONITOR SCREEN.
MONITOR POINT TO MEASURE DC
VOLTAGE PROPORTIONAL TO RSL. SAME
VOLTAGE IS DISPLAYED ON RX (RSL MON)
FIELD ON ANALOG MONITOR SCREEN.
MONITOR POINT TO MEASURE
FUNDAMENTAL CRYSTAL FREQ (MHz)
(BNC, FEMALE).
RF INPUT CONNECTOR
(SMA, FEMALE).
CHAN ALM
EYE
CLOSURE
ON LINE
AFC MON
EYE MON
RSL MON
GND
FREQ
CONT
RECEIVER
XTAL
MON
RF
IN
LMW-6089-sm
08/15/02
2-POSITION TOGGLE SWITCH SETS AFC
TO NORMAL (NORM) OR PEDESTAL (PED).
NORM POSITION LOCKS RCVR TO
FAR-END XMTR.
RX (AFC MON) VOLTAGE
DISPLAYED ON ANALOG MONITOR SCREEN
TRACKS AFC VOLTAGE. PED POSITION
DISABLES AFC AND LOCKS RCVR TO FIXED
VOLTAGE (SETS RCV LO ON FREQ WITHOUT
PHASE LOCK).
ADJUSTS FREQ OF CRYSTAL OSCILLATOR .
ONLY WITH
AFC PED/NORM SWITCH IN
PED POSITION.
PED
AFC
NORM