Drawmer DF330 Instrukcja obsługi - Strona 5

Przeglądaj online lub pobierz pdf Instrukcja obsługi dla Sprzęt muzyczny Drawmer DF330. Drawmer DF330 15 stron. Universal noise filter

DF330 OPERATOR'S MANUAL

Auto mode causes the filter to track the frequency content of the input signal rather than

its amplitude and so even low level passages may be processed without any significant

loss of high frequency content. Which mode to select depends on the character of the

material being processed and this may be decided empirically by the user.

INSTALLATION

The DF330 is designed for standard 19" rack mounting and occupies 1U of rack space.

Avoid mounting the unit directly above power amplifiers or power supplies that radiate

significant amounts of heat and always connect the mains earth to the unit. Fibre or

plastic washers may be used to prevent the front panel becoming marked by the

mounting bolts.

AUDIO CONNECTIONS

INPUTS and OUTPUTS: Input and output connections are provided for use at +4dBu via

balanced XLRs or at -10dBu via unbalanced jacks. It is permissible to use both +4dBu

and -10dBu outputs simultaneously but only one set of inputs (jack or XLR) will operate

correctly at any one time. If un-balanced operation at +4dBu is required, simply connect

the un-used terminal to Ground inside the XLR cable plugs. This applies to both inputs

and outputs. The wiring convention for XLR being: pin 1 Ground, pin 2 Hot and pin 3

Cold. For use with unbalanced systems, the Cold pin (3) must be grounded at both input

and output XLRs.

The input signal level should be adjusted to be within the range of the unit; if the +6dB

LED is constantly lit, the drive to the unit should be reduced at source. Conversely, if the

-6dB LED seldom or never lights, the input signal should be increased.

If earth loop hum problems are encountered, don't disconnect the mains earth but

instead, try disconnecting the signal screen inside the XLR connector at one end of the

cable connecting the DF330 to the patchbay. If such measures are necessary, balanced

operation is recommended.