KSI-W016-000

6

Information On Muting Characteristics (continued)

Furthermore, varying the value of a resistor connected between the pin14 and pin16

changes the value of the muting control current required to obtain the same muting drive

output, accordingly a slope of curve for muting attenuation vs. antenna signal input level is

also changed. Fig. 4 shows these characteristics investigated by using an actual receiver.

The method to adjust the muting circuit is to set the signal input level required to actuate

determined by setting the noise level at no signal.

The slope of the curve for the muting attenuation vs. antenna signal input level can also be

adjusted by the resistor connected between the pin14 and the pin6. However, if the resistor

is too high, the muting control current does not flow into pin6 over than 120 ㎂ even

doesn't reach its maximum value. A recommended value of the resistor between the pin14

and the pin6 is about 22kΩ.

SL1018

ANT I n p u t

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- Fig. 4 -

-Fig.4-