Azden 500UDR User Manual page 6

3
4
5
6
2
1
The 51BT body-pack transmitter has 63 user selectable UHF frequencies and is ideal for lavaliere
and headset microphones. The optional MP-1H instrument cable allows the 51BT to work with
electric guitars and basses.
(1) Open the battery compartment lid by sliding it down and raising it.
(2) Insert one fresh alkaline 9-volt battery into the compartment. Make sure battery polarity is
correct.
(3) Frequency select:
The group knob (left) allows you to select any of seven frequency groups (numbered from 0-6).
The channel knob (right) allows you to select nine frequency channels (numbered 0-8) within the
selected group. Use the flat end of the provided tool to adjust these settings.
(4) Audio input Level Control:
Enables you to adjust the input level of the microphone or musical instrument. Turn clockwise to
increase, or counterclockwise to decrease the input level. Use the + end of the provided tool to
adjust this setting. The level control is factory-preset in the center position.
(5) Power and standby switches:
The power "On" and "Off" switch enables and disables all transmitter functions while the audio
switch "On" and "Standby" turn the audio off and on. Switching the transmitter to "Standby" will
cause the receiver to mute using the tone squelch circuitry in the receiver. This allows the
microphone to be handled with no noise.
(6) LED Indicator:
Turns green when the transmitter is turned on. This LED will also turn red to indicate that battery
level is low and the battery must be changed.
2 7