Sound Devices USBPre 2 - Manual (Page 8)

USBPre 2 User Guide and Technical Information
7
DIP Switch Options
The DIP switches on the back panel of the USBPre 2 can control various features. To adjust an indi-
vidual switch, carefully move the switch with a slender tool.
In the following descriptions, “Up” refers to the direction opposite the numbering on the switch casings.
SAMPLE RAT
E
ON ON ON
OFF OFF OFF OFF
AU
TO
INPUT
ALL
MANUAL
ONL
Y
ON
OFF
ON ON ON
OFF
ON
OFF OFF
ON
OFF
OFF
ON
PHONES
OUTPUT
LINE
MIC
OFF
ON
LINE
MIC
48K
192K
96K
88.2K
44.1K
32K
16K
ST
AND
AL
ONE
10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10
176.4K
A Settings
48 Volt Phantom Power (9 and 10) •
Up position engages 48 Volt phantom power
on balanced microphone inputs. Required for
condenser microphones.
See Inputs Section .
Low-Cut Filter (7 and 8) •
Up position engages low-cut fi lter on balanced
microphone inputs. -3 dB at 80 Hz. 12 dB per
octave.
See Inputs Section .
Limiter (5 and 6) •
Up position engages limiters on balanced
microphone inputs. Attenuates signal above -4
dBFS.
See Inputs Section .
15 dB Pad (3 and 4) •
Up position reduces gain by 15 dB on balanced
microphone inputs. Useful for sensitive mi-
crophones or very loud program material.
See
Inputs Section .
Dual Mono (1) •
Up position disables input 2 and routes input 1
signal to both tracks.
B Settings
Balanced Output Level (1 and 2) •
Determines level of balanced XLR outputs. Up
position: Line level (0 dBu). Down position: Mic
level. (-40 dBu).
See Outputs and Monitoring .
HP Mono Function (3) •
Adjusts what signals are summed when HP
MONO is active. Up position: Input signals
only. Down position: Input signals and output
audio from the computer.
See Ouputs and Moni-
toring .
Meter PRE/PC (4) •
Adjusts whether or not the meter source
switches automatically to PC metering when
computer audio is present. Up position: Auto-
matic. Down position: Manual.
See Ouputs and
Monitoring .
HP / Output Knob (5) •
Adjusts which knob controls headphone gain
and which knob controls main output gain. Up
position: Big Knob controls headphone gain and
Small Knob controls main output gain. Down
position: Big Knob controls main output gain
and Small Knob controls headphone gain.
Headphone Signal to Outputs (6) •
Up position: Only computer audio is sent to
outputs. Down position: Main (analog) output
source is the same as headphone signal source
and affected by Monitor Mix Control. Note: In
Stand-alone mode, input signal is always routed to
the outputs and this setting has no effect.
Input Select Lock (7) •
Up position: Input Select Buttons function nor-
mally. Down position: Input Select Buttons are
disabled and input source selection is locked.
Stand-Alone Sample Rate (8, 9, and 10) •
Sets the operating sample rate when in Stand-
Alone mode according to the associated
diagram.
See Stand-Alone mode . In Soundcard
Mode, sample rate is determined by the com-
puter.
See Installation and Connection .