PRE Guide12
Output Trims 1–8
The output trims are used to individually cali-
brate each channel’s output and send level.
The output trims are factory-calibrated so that
the clip point of the PRE output amplifier
matches the factory-set clip point of the 192 I/O
analog input. The PRE’s output level is –6 dBu
below its maximum output of +28 dBu
(+22 dBu). If you do not intend to use a 192 I/O,
you should turn the trims all the way up (clock-
wise) to allow for maximum signal output
(+28 dBu) and maximum performance.
MIDI In/Out/Thru Connectors
The MIDI connectors on PRE accept standard
5-pin MIDI cables.
The MIDI In connector accepts MIDI input for
remote control of PRE (for example, from the
MIDI Out of a MIDI interface in a Pro Tools
system).
The MIDI Out connector sends MIDI data out of
the PRE to the MIDI input of a Pro Tools system,
or another PRE. To daisy-chain multiple PREs,
connect the MIDI Out of one PRE to the MIDI In
of the next PRE, and so on. You will also need to
set each unit to a unique MIDI channel number
(refer to “MIDI Connections” on page 18).
The MIDI Thru connector is not used for
Pro Tools remote control.
Oscillator (OSC) Output
This is a balanced 1/4-inch TRS jack that outputs
a fixed oscillator signal (+4 dBu reference signal
at approximately 1 kHz) for calibrating the in-
puts of gear not connected through the DB-25
output. For more information, see “OSC (Oscil-
lator) Switch and LED” on page 6.
AC Power
This connector accepts a standard AC power ca-
ble (included). PRE is auto power-selecting
(100V to 240V) and will automatically work
with a standard modular cable to connect to AC
power receptacles in any country.
Power Up Defaults
When you first power on PRE, it has the follow-
ing settings.
User Settings Stored in Memory
When PRE is powered down, it remembers its
last settings. When the unit is powered back on,
the last settings will be intact.
The Send jacks and the DB-25 connector
both use the output trims for adjustment.
Calibrating a DB-25 output will affect the
Send output level as well.
Power Up Defaults
Function Status
Operation
Mode
Stand-alone (Remote “Lock-Out”
LED off)
Peak Hold Off
OSC Off
Shift Off
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