Lectrosonics CR170 User Manual Page 7

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OPERATING INSTRUCTIONS
This sections covers the initial adjustments to the companion transmitter and CR170 that must be made before the
system is placed into operation. The step-by-step procedures are listed in the order in which they should be
performed:
1) Install the battery in the receiver or connect the power cord if you are going to use external power. If using an
external 12 Volt DC source, be sure the center pin on the plug is positive (+).
2) Connect and extend the CR170 antenna.
3) Operate the CR170 POWER switch to ON. Observe that the red POWER lamp lights.
4) Plug your microphone into the companion transmitter. Make sure the plug is locked securely.
5) Turn the transmitter power on and verify that the red lamp on it lights. If the lamp is very dim, or does not
light, replace the battery.
6) Observe that the RF lamp on the CR170 control panel is lighted. This verifies that the receiver is receiving a
useable signal from the transmitter.
7) Position the microphone on your person in the location it will be during actual operation. The microphone
should be within 3 inches of the mouth to minimize the possibility of feedback.
8) A small screwdriver is supplied with the transmitter. The screwdriver is used to adjust the audio gain of the
transmitter to match your microphone and your voice. The adjustment is made while observing the
MODULATION lamps on the CR170 control panel. (Refer to your transmitter operating manual.)
9) Speak at the voice level you will be using during actual operation. While speaking, use the small screwdriver
to adjust the gain of the transmitter until the -20 lamp is lighted or flickers and the 0dB lamp blinks only on the
loudest words. Raise and lower your voice while observing the lamps. The 0dB lamp should blink only
occasionally.
10) Connect the audio patch cord between the CR170 control panel audio output connector and the audio input
connector on the VCR or external PA equipment.
11) Adjust the CR170 LEVEL control as necessary to accommodate the input requirements of the external
equipment. The input levels on different VCRs and PA equipment vary and may require that you set the
LEVEL control in an intermediate position somewhere in between the MIC and LINE positions of the knob. Try
different settings and listen to the results. If the output of the receiver is too high, you may hear distortion or a
loss of the natural dynamics of the audio signal. If the output is too low, you may hear steady noise (hiss)
along with the audio.
NOTE
Do not
use the transmitter gain control to adjust the audio output level of the CR170 RECEIVER.
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