Nady Systems VR-3U Owner's Manual - page 8
8
uB-3 Bodypack Mic Transmitter
Open the hinged BaTTerY DOOr (23) and
insert two fresh AAA alkaline batteries into
the BaTTerY COMParTMenT (24), observing
the correct polarity.
Note: Although fresh alkaline batteries can last
up to 5 hours in use, in order to ensure optimal
performance it is recommended that you replace
the batteries after every 3-4 hours of use. To
preserve battery life, turn the transmitter off when
not in use.
The UB-3 is provided with a 3.5 mm
lOCKInG JaCK (26) for connecting the
audio input selected. Connect either the
HeaDWOrn MIC (35) or laValIer/laPel
MIC (36) as desired, according to the input
selected. To secure the connection, turn the
slip ring on the plug clockwise to thread it
on the jack. To unplug, reverse the process.
Slip the transmitter into a pocket or use the
BelT ClIP (33) to attach to your clothes.
Before turning on the UB-3, first slide the
auDIO MuTe SWITCH (27) to the Off position.
Then slide the POWer SWITCH (29) to the On
position. The battery indicator POWer On/
lOW BaTTerY leD (28) will light up steady,
indicating usable battery strength. In the
case of dead or low batteries, the POWer
On/lOW BaTTerY leD (28) will either not
go on at all or will stay on continuously,
indicating that the batteries should be
replaced with fresh ones. The rF/lOW
BaTTerY leD (3) on the VR-3U receiver
should now be lit, indicating a received
signal from the transmitter. To preserve
battery life, turn the transmitter off when
not in use.
Microphone use (with either a lavalier
or headworn microphone)
Secure the connection from the laValIer
(36) or HeaDWOrn MIC (35) by turning the
slip ring on the plug into the transmitter
clockwise to thread it on to the jack.
To unplug, reverse the process. To use the
lavalier/lapel mic, attach it at chest level.
Do not place it too close to the mouth— a
distance of about six inches usually works
best. To use the headworn mic, place it on
the head and adjust the boom so that the
mic is about one inch to the side of the front
of the mouth. When ready to speak, slide
the auDIO MuTe On (27) to the On position.
Adjust the VOluMe/On–OFF (1) of the VR-3U
receiver as per Monitoring through the
Camcorder.
Note: Observe care in selecting P.A. volume,
transmitter location and speaker placement so that
acoustic feedback (howling and screeching) will
be avoided. Please also note the pickup pattern
characteristics of the microphone selected. Omni-
directional mics pick up sound equally from all
directions, and are prone to feedback if not used
carefully. Unidirectional mics are more resistant
to feedback, but pick up sound sources best that
are directly in front of the mic. Also, mics that are
farther from the sound source, such as lavaliers,
require more acoustic gain and thus are also more
prone to feedback than close-source mics such as
handheld or head-worn models that are used close
to the mouth.
For optimal performance, an InPuT VOluMe
(25) is provided. Adjust the gain by turning
the control with a small screw driver.
For lavalier mic use, it is recommended
that the level be set at about
2
/
3
maximum.
For headworn mic use, it may be advisable
to turn the gain down, depending on
the volume levels expected. In either
application, experiment and set for
maximum possible gain without audible
distortion on the high level peaks.
Note: Turning down the gain too much can
compromise the signal-to-noise and is not
recommended.