User's Manual

8
U-800 RECEIVER
Button Function
The POWER ON Button (1) is used to power receiver ON or OFF. When the
power button is pressed, the
POWER LED (2) and the white backlight on the LCD
DISPLAY (5) will light up indicating the receiver is ready. Press the Power button
again to turn off the receiver. The power LED and the backlight on the LCD will be off
indicating the receiver is off. At power-off the U-800 receiver will store the last settings
entered and re-display them at power-on. It can be reprogrammed to any new
Group/Channel, or Mute level. The default factory setting is Group 11, Channel 01
and Mute 0 on the first LCD menu screen.
The
UP BUTTON (16) is pressed one step at a time to SCAN, IR or to increase
GROUP, CHANNEL, MUTE by one level each time
The
DOWN BUTTON (17) is pressed one step at a time to decrease GROUP,
CHANNEL, MUTE by one level each time
The
MENU BUTTON (18) is pressed one step at a time for Auto Scan Frequency
or to Automatic GR/CH ASC™ Sync, or if pressed repeatedly the
LCD DISPLAY (5)
menu will cycle through the following screens. Press the MENU BUTTON (18) and
the
UP BUTTON (16) at the same time to lock or unlock the keyboard/buttons.
During manual programming, press the
MENU BUTTON (18) to confirm the selection
and advance to the next menu before the Auto Programming Function takes over
after 5 sec.
Rack Mounting the Receiver
There are 2 options available for rack mounting the U-800 receiver: singly or side
by-side with another U-800 receiver.
a. Single mounting: Remove the receiver
SIDE MOUNT CLIP (24) from each
side of the receiver (as shown) and slide in the optional
ERM-12 RACK EARS (25).
b. Side-by-side double mounting: After removing the
SIDE MOUNT CLIPS (24)
from both U-800 receivers join the two receivers with the EJC-3 JOINING CLIP (26)
and attach the
ERM-22 RACK EARS (27) 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-800. Always ensure ad-
equate airflow and heat dissipation in any rack configuration.)
5. SYSTEM OPERATION
17
Feedback
Avoid acoustic feedback (howling or screeching) by taking care in selecting PA
volume, transmitter location and speaker placement.
Please also note the pickup pattern characteristics of the microphone selected.
Unidirectional microphones are more resistant to feedback. However, they pick up
sound sources best that are directly in front of the microphone. Also, mics that are
farther from the sound source (such as a handheld) require more acoustic gain and
thus are also more prone to feedback than close-source mics.
No or Low Audio
If you are not getting audio through the system, carefully re-check all setups.
Especially note that the receiver and transmitter must be set to operate on the same
RF channel. Also confirm that the transmitter’s AUDIO MUTE (36, 40) is not in the
OFF position. The receiver’s UNBALANCED LINE OUT (19) is adjustable so make
sure the VOLUME CONTROL (21) is set properly.
RF Interference and Finding Open Channels
The FCC mandates the following information be provided to all end users of this
equipment:
Consumer Alert
Most users do not need a license to operate this wireless microphone system.
Nevertheless, operating this microphone system without a license is subject to certain
restrictions: the system may not cause harmful interference; it must operate at a low
power level (not in excess of 50mW); and it has no protection from interference
received from any other device. Purchasers should also be aware that the FCC is
currently evaluating use of wireless microphone systems, and these rules are subject
to change.
For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC)
or visit www.fcc.gov/cgb/consumerfacts/wirelessmic_factsheet.html.
If you encounter slight receiving interference when the transmitter is far from the
receiver (from other than an operating TV station on the same frequency), it can
often be overcome by adjusting the receiver‘s MUTE LEVEL/SQUELCH (13)pÃii
Adjusting the Mute Level / RFSquelch.
If receiving interference on a selected channel with the transmitter off, or if you en-
counter interferences in operating multiple U-800 systems simultaneously at the same
location see: “6. Selecting Group/Channel, IR Programming and Simultaneous
Multichannel Operation»ÊvÀÊ«À«iÀÊ«ÀVi`ÕÀiÃÊvÀÊÀi«À}À>}ÊÃÞÃÌiîÊvÀÊ
open channels.
7. CAUTIONS AND TROUBLESHOOTING