Operating instructions, Indicator quick reference – Lectrosonics CR175 User Manual
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OPERATING INSTRUCTIONS
1)
Connect the power cord or install the battery.
2)
Attach and extend the antenna.
3)
Connect the audio cable.
4)
Set the front panel switch to either “EXT” or “INT”, depending upon the power source. Check to see that the red
POWER LED lights up.
5)
THIS IS PERHAPS THE MOST IMPORTANT STEP IN THE SET UP PROCEDURE. Adjust the transmitter
“gain”. See your transmitter manual (Operating Instructions section) for specific directions on the proper gain
adjustment of your particular transmitter.
6)
Adjust the output control according to the type of input on your equipment. The input levels on different VCR’s
and PA equipment vary, which may require that you set the OUTPUT control in an intermediate position. 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. The CR175 output was designed to drive microphone level inputs. The output signal level ranges
from -50dBV with the output control fully counter clockwise to -20dBV with the output control fully clockwise.
INDICATOR QUICK REFERENCE
(Refer to Controls and Functions section for more detailed descriptions)
RF - This LED lights up when the transmitter is turned on. This indicates that the receiver is getting an adequate RF
signal (carrier) from the transmitter.
POWER - This LED lights up when the receiver is properly connected to a power supply and switched on. It indicates
proper battery voltage when the receiver is using a battery.
MODULATION - The “-20” LED lights up when an audio signal is present at an adequate level to produce a good
signal to noise ratio. The “0dB” LED lights up when the audio level is high and the signal is being compressed in the
transmitter. An extremely high audio level may cause distortion.
REVIEW THE TRANSMITTER INSTRUCTION MANUAL FOR
PROPER ADJUSTMENT AND SETUP OF THE TRANSMITTER
MIC LEVEL OR GAIN.
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