Controls and functions, Input jack, On/off switch – Lectrosonics UM100 User Manual
Page 6: On” lamp, Frequency adjust, Turns the battery power on and off, Frequency adjust lf roll-off adjust, Um 100, 9a b c d
CONTROLS AND FUNCTIONS
ANTENNA
OFF ON
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LECTROSONICS
LEVEL
AUDIO
UM 100
FREQUENCY
1.6MHz
100kHz
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150
75 Hz
LF ROLL OFF
Frequency
Adjust
LF Roll-Off
Adjust
INPUT JACK
The input on the UM100 accommodates virtually every lavalier, hand-held or shotgun microphone available. Line level
signals can also be accommodated. Use a Switchcraft TA5F connector on the cord. See the separate sheet titled
“Transmitter 5-Pin Input Jack Wiring” regarding the correct connections for various microphones, and other
sources.
ON/OFF SWITCH
Turns the battery power on and off.
“ON” LAMP
Glows brightly when the battery is good and the ON/OFF switch is ON. A weak or dim lamp means that the battery is
weak. When the light goes out there is about 15 to 30 minutes of operation left. If the lamp fails to light, the battery
should be replaced.
The “ON” lamp is connected to a precision battery test circuit that continuously monitors battery voltage. The LED is
at full brightness with a new 9 Volt alkaline battery. As the battery voltage drops during use, the LED brightness will
also decrease. After about 4.5 hours of operation the battery voltage will be about 6.5 Volts and the LED will be
completely out.
FREQUENCY ADJUST
These two rotary switches adjust the center frequency of the carrier. The 1.6M is
a coarse adjustment and the 100K is the fine adjustment. Each transmitter is
factory aligned at the center of its operating range. The default position of the
frequency select switches is in the center of the transmitter’s range.
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