6
FREQUENCY
1.6MHz
100kHz
BLK 20 (BK)
512.0 - 537.5
SN:
XXXX
35
150
75 Hz
LF ROLL OFF
FCCID:DBZUM700
Lectrosonics, Inc.
Made in U.S.A.
LECTROSONICS
UM700
OFF ON
LEVEL
AUDIO
ANTENNA
CONTROLS AND FUNCTIONS
INPUT JACK
The input jack on the UM700 is a Switchcraft TA5M connector that accommodates virtually every lavalier, hand-held
or shotgun microphone available, with positive or negative bias. The input will also cleanly handle line level signals
up to 300 mV before limiting. Use a Switchcraft TA5F connector on the microphone cable or input adapter 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. Even when the switch is turned off or on abruptly, the digital muting prevents
“thumps” or transients from occurring.
“ON” LAMP
Glows brightly when the battery is good and the ON/OFF switch is ON. This tri-color LED will indicate the condition
of the battery in the transmitter as follows:
Green -
battery good
Yellow -
battery getting low
Red
-
battery very low - change now
Blinking Red
-
battery critical - failure imminent
FREQUENCY ADJUST (located under the sliding door)
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.
Since the internal circuits are all tightly regulated and the RF output stage is powered by a regulated supply, the
transmitter will continue to operate perfectly to a battery voltage of 5.5 Volts.
Please note that a weak battery will sometimes light the POWER LED
immediately after turn on, but will soon discharge to the point where the
LED will indicate a weak battery, just like a flashlight with “dead” batteries.
The combination of an accurate battery condition indicator and regulation of all
internal circuits provides much longer battery life, as well as consistent perfor-
mance over the life of the battery.
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