User's Manual

6
Quick User Controls Guide
UHT-100 Handheld Transmitter: Front and Back
15. MIC BALL Windscreen
16A. LCD DISPLAY: CHANNEL Indicates channel
(00-99)
16
B. LCD DISPLAY: BATTERY Indicates battery status
from one (weakest) to five (strongest) bars.
Flashing “BATT” indicates low battery
16
C. LCD DISPLAY: TX LOCK KEY Indicates Power
On/Off switch is locked (see #20)
17. IR RECEPTOR SENSOR/WINDOW Infrared LED
sensor for linking the transmitter microphone
to the receiver during IR frequency downloads
18. OFF/STBY/ON Slide power switch to ON or OFF
to turn mic on/off, or to STBY to turn on power
with audio muted
19. BATTERY COMPARTMENT Holds two AA alkaline
or NiMH batteries— observe correct polarity
20. TRANSMITTER LOCK SWITCH Slide the switch
to ON to lock the TX, or OFF to unlock the
TX. (IR channel programming still functions
normally)
21. RF POWER HI/LO Slide the switch to HI for
more RF output, or LOW for less RF output—
consumes less battery power in this setting
and also better for simultaneous multichannel
operation applications
22. INTERNAL ANTENNA For best operating range,
do not handle this antenna during use
23. BATTERY COVER Slide open battery slot to
insert batteries
15
19
17 1816
16A
16C
16B
NADY
U HT-100
20
21 22
23
15
Miscellaneous Tips
The receiver antennas should be kept •
away from any metal surfaces whenever
possible as they can reflect away or shield
the incoming RF signal.
If the receiver’s volume control is set •
too high, it may overdrive the input
of the attached audio mixer, causing
distortion. Conversely, if the output is set
too low, the overall signal-to-noise ratio
of the system may be reduced, causing
noticeable hiss. If such noise occurs,
adjust the output level of the receiver so
that highest sound pressure level going
into the microphone transmitter causes
no input overload in the mixer, but permits
the mixer level control to operate in the
normal range (not too high and not too
low). This provides the optimal signal-to-
noise for the entire system.
Before inserting the batteries, ensure that •
they are inserted with the correct polarity.
Before operation, confirm that the receiver •
and associated transmitter are tuned to
the same frequency group and channel
number.
After making a receiver channel change, •
ensure that the corresponding change is
also made on the matching transmitter.
Use only new alkaline or fully recharged •
NiMH batteries. Do not use “general
purpose” carbon batteries. When batteries
are weak, replace all the batteries at
the same time. Do not mix new and
old batteries.
Position the receiver so that it has the •
least possible obstructions between it and
the transmitter. Line-of-sight is best!
During operation, the transmitter and the •
receiver should be as close as possible for
optimum results but never closer than 3 ft.
(1 m) as that may overload the receiver’s
input circuitry and cause noises.
For the best operation, the receiver should •
be placed at least 3 ft. (1 m) above the
ground and 3 ft. (1 m) away from a wall or
metal surface. The transmitter should also
be at least 3 ft. (1 m) from the receiver.
Keep antennas away from noise sources
such as motors, automobiles, neon lights,
signal processors, computers, as well as
large metal objects.
A receiver cannot receive signals from •
two or more transmitters simultaneously.
Turn the transmitter off when it is not •
in use. For longest life, remove the
batteries if the unit is not to be used for
a long period as the transmitters draw
a tiny residual current to maintain the
programmed settings, even when turned
off. Also, since batteries installed for a
long time can sometimes corrode and/
or leak, causing damage, it is generally
recommended that batteries be removed
whenever the transmitters are not being
used.
When using the bodypack for instrument •
use: Scratchy noises can sometimes
occur when an electric guitar with dirty
pots or connections is used with a
wireless system. Therefore, the supplied
capacitor provides first-order filtering of
the RF signal from the cord into the guitar
and eliminates virtually all scratchy noises.
Should your equipment still produce
scratchy noise, we suggest these steps to
eliminate problems:
1) Make sure all guitar volume and tone
pots are clean and all contacts are solid.
This is very important.
2) Solder a 47pF capacitor across the pot
to ground terminal of the guitar’s volume
and tone pots to provide extra filtering.