User's Manual

UT
LECTROSONICS, INC.
6
Power On/Off Switch
A Power On/Off switch located on the outside bottom
of the unit turns the unit on and off. The function of the
Power On/Off Switch can also be changed so it also
operates as an audio mute switch. In this configuration,
the Power LED doubles as a battery status indicator (in
the unmute or On position) and an audio mute/unmute
indicator (in the muted or Off position). (See Operating
Instructions, Power Switch Function Selection.) These
functions are illustrated in the chart below:
The user-selected configuration of the On/Off switch is
stored in the unit’s memory and persists until reconfig-
ured by the user.
The switch can be configured for Normal (power) On/
Off mode or for Audio Mute mode. If the UT Power On/
Off Switch has been configured for Audio Mute Mode, it
is still possible to turn off the transmitter without remov-
ing the battery. This is done by placing the switch in the
On position, then toggling the switch three times in less
than five seconds, ending in the Off position.
Power LED
Whether in normal, mute or locked mode, the Power
LED will indicate the battery level when the unit is pow-
ered up.
The Power LED indicates the battery status when the
unit is powered up with the Power On/Off switch config-
ured for normal operation. The Power LED glows green
when the battery is good. The color changes to red
when there is about 30 minutes of operation left with a
lithium battery. (An alkaline battery will have about 20
minutes of life left.)
In the Normal Mode, the LED blinks red briefly when
the switch is turned off, then the LED goes out as the
power is turned off.
NOTE: A LiPolymer rechargeable battery gives
little or no warning when
it is depleted. If you use
LiPolymer batteries in
the UT, we recommend
trying fully charged
batteries first, 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.
Power LED
Power On/Off
Switch
Power LED
On/Off Switch
Frequency
Switches
Audio Level Control
Modulation
Level LEDs
Battery
Compartment
Locking ring
(Open Position)
Battery
Compartment
Cover
Windscreen
Controls and Functions
When first installed, a weak battery will sometimes
cause the Power LED to glow green, but will soon dis-
charge to the point where the LED will blink red or shut
off completely.
When Power On/Off switch is configured for Audio Mute
Mode, the Power LED indicates battery status when the
switch is set to On. However, when the Power On/Off
swtich is configured for Audio Mute Mode and set to Off,
the Power LED will slowly double blink green to indicate
that the unit’s audio is muted. (See Operating Instruc-
tions, Power Switch Function Selection.)
Compatibility Modes
The Power LED is used to indicate Compatibility Mode.
To identify the current Compatibility Mode, as part of the
powerup sequence, the Power LED will blink:
 •Oncefor100Seriesmode
•Twotimesfor200Seriesmode
•ThreetimesforMode3*
•Fourtimesfor400Seriesmode
•FivetimesforIFBSeriesmode
*Thismodeworkswithanalogreceiversfromother
manufacturers. Contact Lectrosonics for a complete list
of non-Lectrosonics compatible receivers.
Frequency Switches
Two 16-position rotary switches (located under the bat-
tery door) adjust the operating frequency of the trans-
mitter. The Coarse switch adjusts the frequency in 1.6
MHz steps and the Fine switch adjusts the frequency in
100 kHz steps.