Avtech AVD 714 Manuale di Installazione Scaricare il pdf (Pagina 15)

CSD-714 Installation and Operation Manual

1 23-21-01

June 1995

Seattle, WA USA Rev 1 Page 9

If the squelched audio output of the VHF is used, care must be taken to keep the audio input to the

CSD-714 within rating. The frequency response of the output must be such that the difference in

output level at any two frequencies between 300 and 1500 Hz is less than 3 dB. A 20 dB

attenuator may be required to reduce the audio level as referenced at the beginning of this section.

Do not use audio from cockpit volume controls as input to the CSD-714.

For receivers without transformer outputs with HI and LO signal lines, return the CSD-714

INPUT LO lines for the appropriate channel to a ground which is physically and electrically close

to the source radio to avoid ground noise pickup. Use twisted, shielded wire to connect the audio

to avoid hum and noise pickup.

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Avtech AVD 714 Manuale di Installazione Pagina 15