850Bc Body Pack Transmitter; Basic Operation; Channel Selecting; Sensitivity Adjusting - Optimus US-902DC Installation And Operating Instructions Manual

Insert two 1.5 V batteries according the correct polarity, and return the battery tray back to housing
(Figure 5).
Aim the connecting pins exactly toward the cavities on the bottom side of detachable mic. element
(Figure 6), and tight in clockwise! As soon as the batteries are installed well, if the equipment is
turned on the POWER LED will light green.
4.2.2 PT-850BC Body pack transmitter
Slide the battery tray cover in the direction of the arrow to open it, insert two
1.5 V batteries according the correct polarity, and return the cover (Figure
7).
As soon as the batteries are installed well, if the equipment is turned on the
POWER LED will light green

4.3 Basic operation

4.3.1

Channel selecting

Use the supplied screwdriver to select a desired channel for the transmitter from the
preprogrammed 16 channels. The receiver and transmitter must to be settled in the same channel.
4.3.2

Sensitivity adjusting

For the PT-850BC, there is a sensitivity adjustor in the up-left of its back, you can adjust the level
in 3 steps from 0 dB to -20 dB.

4.4 Installation of condenser microphones

4.4.1

CM-501 Lavaliere microphone

Attach CM-501 to clothing, tie, lapel, where is suitable for
sound pick-up.
Plug the connector into input socket on the body-pack
transmitter (Figure 8).
4.4.2

CX-504 Headset microphone

Put the neck-frame behind your head, and fix the temples on
your ears as Figure 9, then adjust the gooseneck to make
microphone aim to the suitable place of sound pick-up.
Plug the connector into input socket on the body-pack
transmitter (Figure 9).
US-902DC Version 1.0
US-902DC
Figure 5
Wireless Receiver
Figure 6
Figure 8
Figure 9
Figure 7
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