Roland Quad-Capture Owner's Manual page 40

Troubleshooting
Problem
Sound is
interrupted
during playback
or recording,
sound drops out
Noise or
distortion occurs
elsewhere than in
the playback from
your computer
Recorded sound
is too loud or too
soft
40
Confirmation
Are you using the included USB cable?
Is the monitoring function of Windows
enabled? (Windows 8.1/8/7)
Did you try to play back or record
immediately after the computer started
up or after it woke up from sleep mode?
Is it possible that the digital signal
arriving as input has a different sampling
rate than the rate you've selected within
your software?
Is a guitar connected?
Could you have left an unused
microphone or guitar connected?
Is the [GROUND LIFT] switch set to
"NOR"?
Do you have a MIDI sound module and
the QUAD-CAPTURE connected to your
computer with the USB cables, and have
the output of the MIDI sound module
connected to the INPUT 1L or INPUT 2R
jack of the QUAD-CAPTURE?
Have you connected the ground
terminal?
Is the input level appropriate?
Does the sensitivity of the microphone
match the input level of the
QUAD-CAPTURE?
Resolution
You must use the included USB cable.
Some commercially available USB cables do not
meet the requirements of the USB standard,
and this may prevent the QUAD-CAPTURE from
operating correctly.
Disable the monitoring function (p. 48).
Wait a while before attempting playback or
recording.
Set the sampling rate setting of the software
to match the sampling rate of the equipment
connected to the COAXIAL IN (3/4) jack.
When you are not using digital input, be sure to
disconnect anything connected to the COAXIAL IN
(3/4) jack.
Move as far away from the computer as possible.
If the noise decreases when you lower your guitar's
volume, it may be that your guitar's pickups are
being affected by noise from your computer or
display.
Disconnect the unused microphone or guitar, and
turn the [SENS 1L] and [SENS 2R] knobs to the left
fully in order to lower the input level.
Try setting the [GROUND LIFT] switch of the QUAD-
CAPTURE to "LIFT, " and check for any improvement
in noise level.
Normally, this switch should be set to "NOR. "
Set the [GROUND LIFT] switch to "LIFT. "
If the noise remains, connect the MIDI sound
module and the QUAD-CAPTURE to a self-powered
USB hub (a USB hub that uses an AC plug).
You may be able to solve the problem by
grounding a metal component of your computer or
the ground pin of your computer's AC adaptor.
Also check whether there might be a device nearby
that is emitting a strong electromagnetic field, such
as a television or microwave oven.
Use the [SENS 1L] or [SENS 2R] knob of the
QUAD-CAPTURE to adjust the input level. If your
software has an input level adjustment, check the
input level setting.
The QUAD-CAPTURE's microphone input level is -60
dBu for the XLR type connector, and -50 dBu for the
TRS phone type connector. If the sensitivity of the
microphone is low, the level will be low.