David Clark 9800 Series Manuel d'installation télécharger pdf (Page 30)

9532P-62 (03-11)

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• F

or Weather/2-Way Radio Connection (Listen Only):

q It is very important to follow these instructions carefully. Failure to do so may

result in serious damage to your radio equipment or the Series 9800 Marine

Intercom System.

q Locate the Speaker/Audio outputs on the radio. Determine the method of connection

(terminals, connector, etc.).

q See Figure 18 & Table 3 which show how to connect an isolation transformer between

the radio and the C98-20AX cable. Stereo installations require two transformers.

q The installer will fabricate the circuit in Figure 18, mount it in an appropriate enclosure,

and interface it with the radio and the C98-20AX cable.

q The David Clark Company recommends using a SP-70 transformer (P/N: 09363P-34).

q Note that two 1000pF, 50WVDC capacitors are also required.

RADIO 3

SPEAKER HI

RADIO 3

SPEAKER LO

STEREO LEFT

TEREO RIGHT

STEREO RETURN/SHIELD

600Ω : 600Ω *

AUDIO XFMR.

SP-70 or EQUIVALENT

WIRE

FUNCTION

NPUT

FUNCTION

98-20AX

AUXILIARY INPUT

CABLE WIRE COLOR

REEN

RED

BLACK/SHIELD

1000 pf + 10%

0 WVDC)

1000 pf + 10%

(

50 WVDC)

igure 17: Audio isolation transformer circuit used to interface to Ext. Speaker of 2-Way/Wx radio

Wire Color Function

Green Left

Red Right

Black/Shield

Return

able 3: C98-20AX Wire Color Chart

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 42 43

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David Clark 9800 Series Manuel d'installation Page 30

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