Roland M-480 Owner's Manual page 89

Editing the preamp
You can setup the preamp gain of the input jacks directly.
It is useful when an input jack is not patched to M-480's input
channel, but is a split source used for a multi-channel recording
system.
1.
Access the PATCHBAY screen.
2.
Press [F1 (INPUT)] to access the INPUT tab.
3.
Press [F3 (REAC A)], [F4 (REAC B)], or [F5 (CONSOLE)] to
select the desired location for the input jack.
4.
Press [F7 (PREAMP EDIT)] to access the PREAMP EDIT
popup.
fig.ScrPreEditGuide.eps
The PREAMP EDIT popup will appear.
1 Device indication
This indicates the input/output unit or the M-480 itself that is
the target of the PREAMP EDIT popup.
2 Preamp
Here you can setup the preamps.
fig.ScrPreEditGuide2.eps
1
2
3
4
5
6
Input number
1
This indicates the input jack number.
Channel name
2
If the input jack is patched to the M-480's input channel, this
indicates the name of the input channel to which the input
jack is patched.
If the input jack is patched to more than one channel, the name
of the lowest number channel is shown.
1 2
5.
6.
7.
Input/output patchbay
Level meter
3
This indicates the input level.
+48V buttons
4
This turns the +48V phantom power on/off.
You must turn the phantom power off if you've connected
equipment that does not require +48V phantom power.
Mistakenly supplying phantom power to a dynamic
microphone, audio playback device, or any other device that
does not require phantom power will cause malfunctions.
Carefully read the owner's manual for your microphone or
other device, and make sure of its specifications.
Since noise will be produced when you switch the phantom
power setting, the output of the channel whose setting you
change will be briefly muted.
PAD button
5
This switches the pad on/off. Turning this on will lower the
input sensitivity of the preamp by 20 dB.
Since noise will be produced when you switch the pad setting,
the output of the channel whose setting you change will be
briefly muted.
GAIN knob
6
This adjusts the preamp gain in a range of -65 dBu– -10 dBu
(if PAD is on, a range of -45 dBu– +10 dBu).
The preamp gain is not a continuous control, it is digital with
stepped control. In certain situations artifact noise may occur
when changing preamp gain. This is normal.
For the following cases, the preamp area will not show +48
button, PAD button, and GAIN knob:
• Digital input (the SI-AES4 for example).
• When the REAC port is REAC split.
Move cursor to the desired input jack.
Use the +48V button, PAD button and GAIN knob to
setup the preamp.
Press [F8 (CLOSE)] to close the popup.
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