25
Optional Accessories
UHF Wireless Channels (optional accessory)
You can add up to four UHF wireless microphone modules
(sold separately) to use with the PA-PRO 900. Each port on
the rear panel corresponds to a mic channel on the front
panel. Adjustments made to the channel strips on the front
panel will adjust the audio from the wireless microphones.
Channel 1 on the front panel is tied to Channel 1 on the
rear panel, Channel 2 to Channel 2 and so forth. Refer to
the information below to setup and use your UHF wireless
microphone(s).
Module Description and Functions
1. POWER (LED)
- Indicates there is power to the module.
2. RF (LED)
- Lights when an RF connection is made.
This LED should light when you turn on the associated
microphone. If this LED light when its associated
microphone is turned off, that indicates that another
external device is connected to that channel (interference).
3. AF (LED)
- Lights when AF signals are being transmitted.
This LED will light as sounds is picked up and transmitted
from the associated microphone (speech or instrument).
4. SQ (Squelch)
- The Squelch control is used to mute
unwanted noise interference from a microphone channel
when the associated transmitter is turned off. To adjust
squelch to clockwise to increase squelch, and counter-
clockwise to decrease squelch.
NOTE: Typically, as a channel’s squelch setting increases, its
operating range decreases. It is therefore recommended to
set the squelch control only as high as necessary to mute
any noise interference.
5. Level
- This knob controls the microphone volume (gain)
level for this channel. Turn clockwise to increase volume,
and counter-clockwise to decrease.
Setting Up
For each UHF wireless channel, you will have a handheld
microphone, wireless module, and antenna. Follow the steps
below to set them up.
Module Installation
1. Unscrew the two retaining screws.
2. Remove the cover plate and store it in a safe place.
3. Fully insert the wireless module so the module is fl ush
with the faceplate of the PA-PRO 900.
4. Replace and tighten screws.
Removing Modules
1. Unscrew the two retaining screws.
2. To remove, simply slide the module out of the
compartment.
3. Align the cover plate, and tighten screws.
Antenna Installation
Insert the antenna’s TNC connector into the corresponding
channel’s TNC antenna jack and twist clockwise until it is
fi rmly connected.
If installing multiple antennas, ensure the antennas are not
touching each other.
Microphone Battery Installation
1. To remove the lid, press down on the tab and slide the lid
down towards the bottom of the mic.
2. Insert 2 fresh 1.5-volt AA alkaline batteries. Make sure
the batteries are inserted in the right direction according
to polarity (+/-).
3. Close the battery compartment lid.
Basic Operations
1. Press the POWER switch on the front panel of the PA-
PRO 900.
2. Adjust the module level controls to approximately 50%.
3. Switch the microphone’s power switch to the ON position.
2. Set the channel strip source select button to UHF (front
panel).
4. Talk or sing into the microphones and adjust the channel
strip level and eq controls (front panel) until you are
satisfi ed with the sound.
Note: During normal operation, the RF/AF signal LED’s will
illuminate when a microphone is being used.
�� � ��