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8. Turn on your transmitter. If your system contains either a CR77 or UM1 receiver, one of the “A/B Receiver” LEDs will be lit, showing you
whether the (left) “A” or (right) “B” receiver is currently being used. The CR77 / UM1 meter will also indicate the strength of the incoming
RF signal.
9. Turn on your connected amplifier and/or mixer but keep its volume all the way down. If your system contains an AL1 transmitter, make
sure it is unmuted. Set the Volume, Level or AF Level knob on the receiver fully clockwise; this is unity gain.
10. Speak or sing into your mic at a normal performance level while slowly raising the audio input control of your amplifier or mixer until
the desired level is reached. If necessary, use the supplied plastic screwdriver to adjust the transmitter’s Gain trimpot in order to increase or
decrease its signal level. If you are using an AL1 transmitter with the built-in microphone, correct placement is critical to sound quality. It
should be unobstructed by clothing and either clipped to a shirt pocket or lapel, or worn around the neck on the supplied lanyard.
11. Do a walkaround through the intended area of coverage while observing the receiver’s “Power/RF” LED or RF Meter; it should indicate
sufficient RF reception in all areas of coverage . Reposition it (or its antenna) as necessary. If extended range coverage is required, a Samson
CR77 or UM1 true diversity receiver (set to the same channel as the transmitter) should be used
12. If you hear any spurious noise from the receiver output when the transmitter is turned off, use the supplied plastic screwdriver to adjust
the receiver Squelch level control, slowly turning it clockwise to the point at which the noise disappears.
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