WEISS DAC202 Operations Instructions download pdf (Page 4)

OPERATING INSTRUCTIONS FOR GAMBIT DAC2 24Bit / 192kHz D/A CONVERTER OPERATION

Daniel Weiss Engineering Ltd., Florastr. 42, CH-8610 Uster Page 4

 +41 44 940 20 06  +41 44 940 22 14  www.weiss.ch  [email protected]

OPERATION

Unpacking and Setup of the DAC2

Carefully unpack the DAC2. The following items

should be enclosed:

• The DAC2 D/A Converter unit

• A CD with the necessary Firewire drivers for

Windows and OSX

• This Owners Manual

Firewire Connection

Before connecting the Firewire cable between

computer and DAC2 unplug both the computer

and the DAC2 from the mains power.

Mains Connection

Before connecting the mains cable make sure

the voltage selector switch on the back of the

unit

(integrated into the mains connector) is set to

the appropriate voltage. If this is not the case

then

open the mains selector lid with a strong screw-

driver. The mains plug must not be plugged into

the connector for that purpose. Now you see a

black selector drum with appropriate voltages

written in white letters. Remove this drum, turn

it to the appropriate voltage and reinsert it. Now

firmly close the lid again. Connect the DAC2 to

the wall outlet with the mains cable.

Operation Modes

The DAC2 operates in various modes. The power

switch, the Firewire switch and the S/PDIF

switch are used to toggle between these modes.

If the power switch is held pressed for longer

than 1.5 seconds, the mode of the DAC2 is tog-

gled between “input selection” and “volume con-

trol” modes. If the Firewire switch or the S/PDIF

switch is held pressed for longer than 1.5 sec-

onds, the mode of the DAC2 is toggled between

“normal signal path” and “insert signal path”.

Explanation of these modes follow below:

Toggle with power switch (press switch

longer than 1.5 seconds):

- “input selection” mode: In this mode the input

source can be selected with the three switches

to the right of the power switch.

- “volume control” mode: Both AES/EBU and

S/PDIF switches are lit to indicate that mode. In

this mode the “S/PDIF” switch becomes the

“volume up” control, the “AES/EBU” switch be-

comes

the “volume down” control, the “FIREWIRE”

switch becomes the “dim” control. The dim

switch lowers the volume by 20dB. When

dimmed, the Firewire switch is flashing. The up /

down switches step the volume up / down by

0.5dB steps over a 120 dB range. If the up or

down switch is held pressed, the volume

changes continuously. The volume control is

done in the digital domain and is properly dith-

ered, which means that the quality of the level

control is at least on par with an analog volume

control. Ideally the DAC2 unit is operated at

digital volume levels at or near to the maximum

level in order to utilize the dynamic range of the

DAC2. The basic analog output level can be set

as described below.

Toggle with FIREWIRE or S/PDIF switch

(press switch longer than 1.5 seconds):

- “normal signal path” mode: In this mode the

DAC2 accepts signals from the selected input,

i.e. From Firewire, XLR, RCA, Toslink inputs.

- “insert signal path” mode: In this mode an ex-

ternal digital audio device (e.g. a digital equal-

izer) can be looped into the signal path via the

XLR input / output connectors. The resulting

signal path thus looks as follows: Firewire (or

RCA or Toslink) input  XLR output  external

device  XLR input  DAC chip. The “insert sig-

nal path” mode is indicated as follows: If the

Firewire is the main input, the Firewire and

AES/EBU switches are lit. If the S/PDIF is the

main input the S/PDIF and AES/EBU switches

are lit. So to enable the insert mode when the

Firewire input is selected press the FIREWIRE

switch for longer than 1.5 seconds. To enable

the insert mode when the S/PDIF input is se-

lected press the S/PDIF switch for longer than

1.5 seconds. To leave the insert mode again

press the FIREWIRE (or S/PDIF switch if appro-

priate) for longer than 1.5 seconds.

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