HD I/O Guide
8
+4 dBu Balanced
Provides eight balanced input
channels at +4 dBu nominal operating levels.
–10 dBV Balanced
Provides eight balanced input
channels at –10 dBV nominal operating levels.
For wiring information, see Chapter 6, “Pinout
Diagrams for the DB-25 Connectors.”
For each channel, you can select input level from
within the Hardware Setup dialog (see “Hard-
ware Setup” on page 19).
Input Trims
The Input Trims below the DB–25 connectors
are used to individually calibrate each channel’s
input level. See “Input Trims” on page 28.
Additionally, the Limiter function helps avoid
digital clipping (see“Limiter” on page 24).
Analog Output
The HD I/O Analog Out card contains a single
DB–25 connector and Output Trims for eight
channels of analog audio output. These balanced
outputs operate at +4 dBu levels. See Chapter 6,
“Pinout Diagrams for the DB-25 Connectors.”
Output Trims
The Output Trims below the DB–25 connector
are used to individually calibrate each channel’s
output level. For more information, see
Chapter 7, “HD I/O Calibration Mode Instruc-
tions.”
Most consumer electronics operate at –10 dBV
levels, and may not feature balanced inputs
and outputs. You can connect –10 dBV
signals to the –10 dBV inputs, but you will
need to make sure that the negative terminals
are not connected.
For –10 dBV gear, you can switch a jumper
on Analog Output cards (on a channel-by-
channel basis) from the default Hi position
to Lo for a –6 dB pad. You can then adjust
the Trim pot for the corresponding output
channels by an additional –4 dB to accom-
modate –10 dBV gear. For more informa-
tion, see Chapter 7, “HD I/O Calibration
Mode Instructions.”
Summary of Contents for HD I/O
Page 1: ...HD I O Guide...
Page 22: ...HD I O Guide 18...
Page 38: ...HD I O Guide 34...
Page 42: ...HD I O Guide 38...
Page 50: ...HD I O Guide 46...
Page 51: ......
