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メディア・コンバーター Digitrax SoundFX SFX0416のPDF マニュアルをオンラインで閲覧またはダウンロードできます。Digitrax SoundFX SFX0416 16 ページ。

A Note about Steam Chuff/Cam configuration: CV133 and CV134 work

together to control chuff timing:

CV133 Steam Chuff/CAM config, 128=>EXT cam, 1-127=>DRIVER dia in

inches[63] CV134 Steam gear ratio trim, 32=100% ratio, [32]

Setting CV133's value from 1-127, puts the SFX0416 into 'Autochuff' mode.

Autochuff mode tells the decoder to simulate driver chuff timing in software.

The CV133 default value is 63, approximating a real-world loco driver diame-

ter of 63 inches. If you halve this figure you will effectively double the chuff

rate for a given loco speed.

CV134 (gear ratio) also effects the Autochuff rate. The CV134 default value of

32 assumes no gear reduction. Doubling this value to 64 tells the decoder to

simulate a 2:1 gear reduction thereby doubling the chuff rate. CV134 and

CV133 work together to create the desired chuff rate in your locomotive.

A final note on Chuff support - Setting CV133 to a value of 128 tells the

SFX0416 that you want to configure an actual cam input on your locomotive.

CV134-->128 tells the decoder to activate the white cam input wire on the 5

lead sound wire set of the SFX0416 (see diagram below)

A chuff will be triggered when a pulse of over 6 volts or DCC track voltage is

seen on the white CAM input lead. This voltage has to go off (0 volts) before

the next chuff can be triggered.

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