UDR700 / UM700 / UT700
UT700 Controls and Functions
Encryption Key Link
Power LED
Power On/Off
Switch
Battery
Compartment
Power On/Off Switch
The Power On/Off slide switch is located on the outside
bottom of the unit and controls power to the transmitter.
Power LED
The Power LED glows green when the battery is good
and the On/Off switch is set to On. The LED glows red
as the battery voltage drops and blilnks when there is
about 30 minutes of operation left with the recom
mended alkaline battery.
Note: A weak battery will sometimes cause the
POWER LED to glow green immediately after
being put in the unit, but will soon discharge to the
point where the LED will either glow red or the
transmitter shuts down. If the lamp fails to light,
the battery should be replaced.
Caution: A NiMH battery will give little or no
warning when it is depleted. If you wish to use
NiMH batteries in the unit, we recommend
trying fully charged batteries, noting the length
of time that the batteries will run the unit and
in the future use somewhat less than that time
to determine when the battery needs to be
replaced.
When the unit is first turned on, the Power LED also
blinks a code to indicate the current Security Level.
Level 1 - One blink
Level 2 - Two blinks
Level 3 - Three blinks
Modulation LEDs
-10
-20
Fine
Coarse
Frequency Switches
Audio Level
Control
Hiding the Power LED
This unit has no provision for disabling the LEDs. The
Audio Level LEDs are covered during normal use but
the Power LED is exposed. If the light is objectionable,
we recommend covering the Power LED with a piece of
opaque tape.
Encryption Key Link
The Encryption Key Link is used to connect the trans
mitter to the UDR700 Series receiver to set an encryp
tion key.
Frequency Select Switches
Two 16-position rotary Frequency Select Switches
(located in the battery compartment) are used to adjust
transmitter’s operating frequency. The Coarse switch
adjustment adjusts the frequency in 1.6 MHz incre
ments and the Fine switch adjusts in 100 kHz incre
ments.
Frequency Switches
Coarse
Fine
0 1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0 1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
LECTROSONICS, INC.
16
Summary of Contents for UDR700
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