Lectrosonics Long Ranger II - Manual (Page 6)

M170 SERIES TRANSMITTERS
Standard LONG RANGER II systems include an M170 belt-pack transmitter which is designed to be
used with a lavalier or headset microphone. The optional M170-XLR transmitter is similar to the M170
but is equipped with two microphone connectors; a locking micro jack for lavalier or headset
microphones and an XLR connector for use with standard low impedance hand held microphones. If
you have one of the other optional Lectrosonics transmitters, consult the supplied manual for that
transmitter for the description and operating instructions.
The BATTERY used in the transmitter should be a 9 Volt alkaline or lithium battery which will provide
up to 15 hours or more of operation. These are available almost anywhere. Carbon zinc batteries,
even if marked "heavy duty" or "super heavy duty", will only operate up to 4 hours. Make sure
"alkaline" or "lithium" is marked on the battery.
To replace the battery, turn the THUMB SCREW counterclockwise and remove the side cover. The
battery will not go into the compartment if it is put in backwards. Observe the large and small holes in
the battery contact pad.
The BATTERY INDICATOR will light when the transmitter is turned on and will stay lit as long as the
battery is good. If the battery is low, the battery indicator will grow dim and finally go out. Even after
the indicator goes out, there may still be up to an hour or more of use remaining. When the battery is
too low for proper operation, the sound from the wireless system may be intermittent or totally absent.
When the transmitter is first turned on, it may require several minutes to get a "true" battery reading.
The MIC JACK is a locking micro jack that supplies phantom power for electret microphones such as
the M140 lavalier model and the headset models. Insert the microphone plug into this jack and rotate it
clockwise to lock it.
Caution - If the microphone plug is not screwed in tightly,
the audio may become "crackly" as the mic cord is moved.
The microphone cord is the antenna for the transmitter. The standard 3-pin XLR CONNECTOR is
designed for best performance with standard, balanced, 50 to 600 ohm impedance microphones,
although it will work with high impedance microphones. If your microphone has selectable impedance,
set or wire it for 150 or 200 ohms, or set it to the "low impedance" position.
LAVALIER/HEADSET
MIC JACK
M170-XLR M170
THUMBSCREW
ON/OFF
POWER
LAMP
INDICATOR
BATTERY
GAIN ADJUST
MIC JACK
LAVALIER/HEADSET
XLR MIC JACK
AUDIO MUTE SWITCH
(M170-LS only)
OFF
ON
Figure 4 - M170 Transmitters
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