Shure WL83 Spezifikationen PDF herunterladen (Seite 10)

SETTING GAIN LEVELS

With the system in place and connected, all units can

now be turned on and the levels set to their optimum

positions.

TRANSMITTER

Place the POWER Switch of the W25DR receiver in the

ON position. The red POWER LED will light.

Turn the transmitter POWER ON/OFF Switch on.

Observe the receiver RF SIGNAL LEVEL display: one of

the green LED segments should light, indicating ade-

quate RF signal strength for good transmission. A

yellow LED indication means less than optimum signal

transmission and/or reception, and a red LED indicates

less than satisfactory operation.

Turn the transmitter MIC ON/OFF Switch to the ON

position. With a microphone connected to the transmit-

ter, the receiver AUDIO LEVEL display will now respond

to varying sound levels.

Set the transmitter GAIN switch as dictated by the

type of input: Hi for low-impedance microphones; LO

for high-impedance microphones and instrument

pickups.

Sound Pressure Levels

Normal.

The transmitter MIC LEVEL Control has been

factory-set to provide optimum audio modulation at the

receiver, as indicated by LED illumination in the -7 to 0

range (see Figure 3). Readings in this area will yield the

highest dynamic range without overload and resulting

distortion.

AUDIO LEVEL DISPLAY

FIGURE 3

High.

For high sound pressure level (SPL) applications

such as loud singing or musical instruments, the preset

transmitter level may be too high. To avoid this overload

and potential distortion condition, use the supplied

screwdriver to turn the transmitter MIC LEVEL Control

down (counterclockwise; see Figure 4). This adjustment

should be made under the expected operating condi-

tions, that is, with the high SPL singer or musical instru-

ment in use at the microphone. Turn the control down

until the optimum (-7 to 0) readings are obtained.

HIGH SPL GAIN ADJUSTMENT

FIGURE 4

Low. Low SPL applications such as soft-spoken in-

dividuals or conditions where the microphone must be at

a greater-than-normal distance from the sound source,

may require an increase in the transmitter gain setting.

To correct for a low-level condition, turn the MIC LEVEL

Control up (clockwise; see Figure 5) until a proper (-7 to

0) LED reading is obtained.

LOW SPL GAIN ADJUSTMENT

FIGURE 5

RECEIVER

The rear-panel receiver OUTPUT can be adjusted using

the MICROPHONE OUTPUT LEVEL Control. In this way,

the wireless system output can be made identical to that

of a conventional wired microphone, avoiding extreme

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