Lectrosonics MM400c User Manual download pdf (Page 15)

Watertight Miniature UHF Belt-Pack Transmitter

Rio Rancho, NM

Some mics require RF protection to keep the radio sig-

nal from affecting the capsule, even though the trans-

mitter input circuitry is already RF bypassed.

If the mic is wired as directed, and you are having difﬁ-

culty with level, high noise, or poor frequency response;

RF is likely to be the cause.

The best RF protection is accomplished by installing RF

bypass capacitors at the mic capsule. If this is not pos-

sible, or if you are still having problems, capacitors can

beinstalledonthemicwiresinsidetheTA5Fconnector

housing.

Install the capacitors as follows: Use 330 pF capaci-

tors. Capacitors are available from Lectrosonics. Please

specify the part number for the desired lead style.

Microphone RF Bypassing

Leaded capacitors: P/N 15117

Leadless capacitors: P/N SCC330P

All Lectrosonics lavaliere mics are already bypassed

and do not need any additional capacitors installed for

proper operation.

2 WIRE MIC

CAPSULE

SHIELD

AUDIO

Alternate location for bypass capacitors

MICROPHONE

CONNECTOR

Preferred location for bypass capacitors

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Lectrosonics MM400c User Manual Page 15