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Hardware Features
Front Panel
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All operational controls and metering for all eight channels are on the front panel.
INPUTS 1 to 2 – 2 x "Combo XLR" input sockets for Channels 1 and 2 - connect microphones
1.
or line level signals via XLR or ¼" jacks: either TRS (balanced) or TS (unbalanced) jack plugs
can be used for instruments or line level signals. Note that the inputs for Channels 3 to 8 are
on the rear panel [12].
Input gain controls 1 to 8 - eight rotary controls: adjust the input gain for the signals in
2.
Channels 1 to 8 respectively.
INST – two latching switches which put Inputs 1 and 2 into "Instrument" mode. When INST is
3.
selected, the gain range and input impedance are altered (relative to LINE), and the input is
made unbalanced. This optimises it for the direct connection of instruments via a 2-pole (TS)
jack plug. When INST is off, the inputs are suitable for the connection of line level signals. Line
level signals may be connected either in balanced form via a 3-pole (TRS) jack or unbalanced,
via a 2-pole (TS) jack. Each switch has an adjacent green LED to confirm selection.
4.
MIC 48V (1-4 & 5-8) – two latching switches, each enabling 48 V phantom power at the XLR
contacts of four inputs: Channels 1 to 4 and 5 to 8 respectively. Each switch has an associated
red LED indicating that phantom power is selected.
5.
PAD – a latching switch for each channel, reducing the channel gain by 8 dB when selected.
A red LED adjacent to each switch confirms PAD selection.
6.
Input signal level meters: eight LED meters, one per channel. These show the signal level in
each channel post the input gain control, so you can see the level being sent to the output.
SAMPLE RATE – a soft switch which steps through the six available sample rate settings,
7.
the current rate being indicated by one of the adjacent green LEDs. The sample rate in use is
stored in memory so that it is retained when the unit is switched off.
SYNC – a soft switch which selects the digital sync source for the Scarlett OctoPre (Internal or
8.
Word Clock), the selected source being indicated by one of the adjacent red LEDs. The source
in use is stored in memory so that it is retained when the unit is switched off.
9.
– a green "Locked" LED which illuminates when the unit has locked to the available sync
source, indicating that it is ready to use.
10. POWER – AC power switch and green LED.
11. Rack ears for mounting the Scarlett OctoPre in a standard 19" equipment rack.
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