User's Manual

UHF Digital Hybrid Wireless™ Receiver
Rio Rancho, NM
17
5. RF signal strength is indicated by markings in mi-
crovolts on the front panel to the left of the LCD.
Pilot
Div
RF AudRxTx
BAT
-40 -20 0 dB
1000
100
10
1
uV
OFF
ON
MENU
SEL
12
RF level in microvolts
Look for clear channels in the spectrum where
there is no RF activity. Scanning will repeat and
continue until a button is pressed.
No RF activity (clear channel)
6. If necessary, press the MENU button to zoom in for
greater detail for fine adjustment.
Zoom in to make fine adjustments
7. Then press the SEL Up and Down arrows to move
the marker to the middle of a clear area where
there is no RF activity. If an area with no RF activity
cannot be found anywhere in the spectrum, locate
one with the least amount of RF activity.
Move marker to area with no RF activity
8. Press all three buttons (SEL Up and Down and
MENU) to move to the next screen. Two options will
be shown.
Press the SEL Down arrow button to select the
USE NEW option and set the receiver to the new
frequency just found in scanning.
Press the SEL Up arrow button to select USE OLD
and return to the frequency that was set before
scanning.
Pilot
Div
RF AudRxTx
BAT
-40 -20 0 dB
1000
100
10
1
uV
OFF
ON
MENU
SEL
12
Use the SEL Up and Down arrow buttons
to select the old or new frequency.
Locking and Unlocking the
UCR411A Front Panel Controls
The front panel controls can be “LOCKED” to prevent
accidental changes being made during operation and
handling.
To LOCK the UCR411A
Press and hold the MENU button until a bar tracks
horizontally across the LCD screen and the word
“LOCKED” appears. If the MENU button is released
before the word “LOCKED” appears, the unit will remain
UNLOCKED. When in a LOCKED state, the pilot tone
bypass toggle is also defeated.
In LOCKED state, the use of the MENU and SEL Up/
Down buttons are limited to “view only” and any attempts
to change selections will result in an LCD screen display-
ing the word “LOCKED.” The unit cannot be used for RF
scanning when it is set in the LOCKED state.
To UNLOCK the UCR411A
Press and hold the MENU button until a bar tracks hori-
zontally across the screen and the word “UNLOCKED”
is displayed on the LCD screen. When the unit is UN-
LOCKED, all settings can be altered.
The UCR411A can only be LOCKED or UNLOCKED
from one of the main windows. (There are four of
them.) Also, it cannot be switched between LOCKED
and UNLOCKED modes when it is in a scanning mode
or from other subordinate screens.