Operation Manual

40
Troubleshooting
Problem Conrmation Resolution
Sound is
interrupted
during playback
or recording,
sound drops out
Are you using the included USB cable?
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.
Is the monitoring function of Windows
enabled? (Windows 7)
Disable the monitoring function (p. 48).
Did you try to play back or record
immediately after the computer started
up or after it woke up from sleep mode?
Wait a while before attempting playback or
recording.
Is it possible that the digital signal
arriving as input has a dierent sampling
rate than the rate you’ve selected within
your software?
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.
Noise or
distortion occurs
elsewhere than in
the playback from
your computer
Is a guitar connected?
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 aected by noise from your computer or
display.
Could you have left an unused
microphone or guitar connected?
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.
Is the [GROUND LIFT] switch set to
“NOR”?
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.”
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?
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).
Have you connected the ground
terminal?
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 eld, such
as a television or microwave oven.
Recorded sound
is too loud or too
soft
Is the input level appropriate?
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.
Does the sensitivity of the microphone
match the input level of the
QUAD-CAPTURE?
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.