8
1. Open the hinged
BATTERY DOOR (16)
and insert 2 fresh AAA ALKALINE
BATTERIES into the
BATTERY COMPARTMENT (17)
, observing the correct polarity.
Fresh alkaline batteries can last up to 5 hours in use, but in order to ensure optimum
performance, it is recommended that the batteries be replaced after 3-4 hours of use.
2. The UB-33B is provided with a
3.5 mm LOCKING JACK (18)
for connecting the
audio input selected. Connect either the
INSTRUMENT CORD (24)
, to secure the
connection, turn the slip ring on the plug clock wise to thread it on the jack. To
unplug, reverse the process. Slip the transmitter into a pocket or
CLIP (23)
it onto your
clothes or instrument strap.
3. Turn on the UB-33B by sliding the audio
AUDIO SWITCH (19)
to the OFF position
first then slide the
POWER SWITCH (21)
to the ON position. The Bi-Color
LED
indicator (20)
will stay on (GREEN), indicating usable battery strength and that the
transmitter is on. In the case of dead or low batteries, the LED will either not go on at
all or will stay on (ORANGE) continuously, indicating that the batteries should be
replaced with fresh ones. To preserve battery life, turn the transmitter off when not in
use. The
A or B Diversity LED indicators (13)
on the U-33 receiver should now be lit,
indicating a received signal from the transmitter.
4.
Instrument Use
Secure the connection from the
GT CABLE (24)
by turning the slip ring on the plug
into the transmitter clockwise to thread it on the jack. To unplug, reverse the process.
Plug the 1/4” phone plug into the instrument. When ready to play, slide the
AUDIO
SWITCH (19)
to “ON” position. Adjust the volume of the receiver as per the Audio
Output Instrument Connection section of the above U-33B receiver instruction.
(Note: The UB-33B is supplied with a removable antenna. It should be operated with
the supplied antenna all times. For optimum operating range, always maintain line-
of-sight between the transmitter and the receiver whenever possible.)
UB-33B BASS WIRELESS TRANSMITTER
5
1. Rackmounting the Receiver
There are 2 options available for rackmounting the U-33B receiver: singly or side-by-
side with another U-33B receiver.
a. Single mounting: Remove the receiver
SIDE MOUNT CLIP (1)
from each side of
the receiver (as shown) and slide in the optional
ERM-3 RACK EARS (2)
.
b. Side-by-side double mounting: After removing the
SIDE MOUNT CLIPS (1)
from
both U-33B receivers, join the two receivers with the
EJC-3 JOINING CLIP
(3)
and attach the
ERM-33 RACK EARS (4)
as shown.
(Note: Do not mount
the receiver in a rack directly above an amplifier or other source of high heat –
this could degrade the performance of the U-33B. Always ensure adequate
airflow and heat dissipation in any rack configuration.)
2. Powering the Receiver
Plug the
18V AC/DC ADAPTER (5)
provided into the
DC INPUT JACK (9)
on the back
of the receiver. Then plug the power supply into an AC outlet.
(Note: Any 18V DC
source with 250mA capability can also be used.) Press the
POWER SWITCH (11)
once to turn on the receiver. The
POWER ON LED (12)
will now light and the receiver
is operational.
3. Antennas
The U-33B receiver is supplied with
FOLDING ANTENNAS (15)
. These should be
extended fully to obtain maximum range. Optimal antenna position is 45 degrees
from the receiver (at 90 degrees from each other). For maximum range, it is always
best to maintain a line of sight (no obstructions) between the receiver antennas and
the transmitter at all times whenever possible.
4. Mute (Squelch) Adjustment
In normal operation, the
SQUELCH CONTROL (6)
should be set fully clockwise to the
factory preset RF level (Max. Sens.). However, in areas of high RF activity, the squelch
(or mute, as it is sometimes called) may need to be adjusted to compensate for the
adverse conditions in a particular location. If, with the transmitter off, the receiver’s A
or B
DIVERSITY LED INDICATORS (13)
flicker or stay on, the squelch control should
be turned counterclockwise until the A or B LEDs extinguish. When the squelch is
properly adjusted, the A or B LEDs will only light when the system transmitter is turned
on. Turning the squelch control too far counterclockwise will reduce the range, but
yield a quieter squelch (mute) function. During operation, especially at ranges greater
than 75 feet, one or the other of the A or B LEDs may extinguish briefly. This is
normal—the unit’s DigiTRU Diversity™ reception ensures that the received audio will
not be interrupted. When both LEDs extinguish, the transmitter is out of range for that
given location, and the user should move closer to the receiver to re-establish the
radio link.
U-33B RECEIVER
