Lectrosonics UCR110 User Manual download pdf (Page 4)

SAFETY NOTES

Excessive sound levels can cause permanent hearing damage.

1. Always adjust the volume to the lowest level before listening to unknown

transmissions.

2. Use the lowest reasonable level consistent with hearing safety.

3. Don’t use high sound levels in the earphone to overcome high ambient sound levels. That is abso-

lutely foolish! Demand and use high isolation earphones.

4. Don’t expose your ears to sound levels that cause them to ring. If your ears do ring after exposure,

think of it as a

warning bell telling you not to do that again.

OSHA (Occupational Safety Health Administration) guidelines on the maximum allowable time expo-

sure to sound pressure levels that will cause hearing damage are as follows:

8 Hours at 90 dB SPL

4 Hours at 95 dB SPL

2 Hours at 100 dB SPL

1 Hour at 105 dB SPL

30 Mins at 110 dB SPL

15 Mins at 115 dB SPL

NEVER expose your ears to 120 dB SPL or higher! Damage will occur.

FRONT PANEL CONTROLS & FUNCTIONS

MODULATION LEDs

The two modulation LED’s Indicate the modulation (audio level) of the incoming

signal, and can be used for proper adjustment of the transmitter’s “MIC LEVEL” or

“AUDIO LEVEL”. The -20 LED glows when the transmitter modulation is at a high

enough level to produce a good audio signal-to-noise ratio. It will normally flicker, or

stay lit as you speak into the microphone. The 0dB lamp indicates a “peak,” showing

that the transmitter modulation is at maximum. Constant lighting of the 0dB LED

indicates that the audio gain in the transmitter may be set too high. It is normal and

desirable that you see an occasional flicker of the 0 dB lamp in typical use.

ON/OFF POWER SWITCH

Figure 2

UCR110

Control Panel

Turns the receiver power as supplied by the internal 9 volt battery.

POWER LED

The Power LED glows when the power switch is in the ON position and the battery is

good. The power LED starts blinking when the battery is becoming exhausted and

needs replacement. If the LED does not light up when the switch is turned on or

during operation, replace the battery. In normal operation a new alkaline battery will operate the receiver approximately

5 hours before the LED starts blinking and will continue operating for approximately another 3 hours before the LED

goes off. At that point the unit and the other LED’s will continue operating for another hour or so but with some degra-

dation in performance. During the low battery blinking period the LED on time decreases as the battery becomes

depleated. See the chart on page 7.

LECTROSONICS

UCR 110

LEVEL

OUT

OFF

–20

1 2 3 4 5 6 7 8 9 10

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Lectrosonics UCR110 User Manual Page 4

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