Fostex PD-6 operation manual Adjusting the input gain, Filter setting, Limiter setting

PD-6DVD Location Recorder (Chapter 5: Recording/playback)

Adjusting the input gain

Using the [INPUT GAIN] control, you can adjust the input gain for each mixer channel within the following range.

When the [INPUT MODE] switch is set to “D”, “P” or “T”:	You can adjust the norminal input level within the
	range between approximately -60 and -26 dBu.
When the [INPUT MODE] switch is set to “L:	You can adjust the norminal input level within the
	range between approximately -30dB and +4 dBu.

Filter setting

The PD-6 is equipped with the high-pass filter circuit. The cutoff frequency can be adjusted within the range between 50 Hz and 300 Hz, and the filter slope can be selected between -6 dB/oct. and -12 dB/oct.

The filter is useful to eliminate the wind noise during location recording or unnecessary low frequency noise when recording voice or sound.

You can make filter setting for each channel individually.

Limiter setting

By using the limiter when recording microphone sound, the signal level is prevented from exceeding a certain level. In result, the signal level fluctuation is suppressed. You can activate the limiter channel by channel, by setting the [LIMITER] switch to “ON”.

The PD-6 limiter uses the VCA (Voltage Controlled Amplifier) circuit. By default, the threshold is -12 dB under the 24-bit full-scale level (all bits are on) and the compressed ratio is 1:3. The limiter attack time is fixed to 20 ms, while the release time is fixed to 150 ms.

You can set the threshold and level for each channel individually using the “Limiter parameter” menu in the Setup mode (see “Chapter 7: Setup mode” on page 98 for details).

[HPF] control and switch

[LIMITER] switch

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