Numark Industries DM 1835X User Manual
T8 I hit the Sync Lock button, but the flashing
red beat LED doesn't seem to follow the beat.
This means you hit the Sync Lock button before the
red beat LED actually started tracking the tempo. You can
easily fix this by tapping the Beat Assist buttons as many
times as necessary to resync to the beat of the music.
T9 The beat tracking suddenly gets off track.
This may happen if the music has several beats
missing, or the rhythm suddenly becomes extremely
complex or variable. You can either resync the beat using
the Beat Assist button or wait a few seconds for the
Beatkeeper to automatically recover.
T10 The Beatkeeper seems to track the music for
a little bit right after using the Beat Assist, and
then drifts off.
This could be one of two things:
a ) The Beatkeeper is averaging the time between each
of your Beat Assist button taps. If the first tap is way off, the
tempo will be way off.
b ) The Beatkeeper was synced during a section of the
music without a well defined beat.
In either case, the problem can be overcome by waiting
a few seconds before preceding to tap the Beat Assist
button two or more times with the beat of the music.
T11 Either the BPM number or red beat LED
doesn't track the music fast enough while using
the pitch bend on my CD player (or speed control
on my record player).
You may have exceeded the tracking capability of the
Beatkeeper. The Beatkeeper can normally handle speed
changes of +/- 5% per beat if the music's rhythm is steady. If
the rhythm is complex (or some of the beats are missing) the
Beatkeeper will require more gradual changes to track
* If you are using a record player or a wide range pitch
bend on a CD player, note that the Beatkeeper only tracks
+/- 11.5% from the tempo at which it was synced. You may
need to resync the Beatkeeper if you exceed this range
while attempting to align tempos.
* You can also manually resync the beat using the Beat
T12 Neither the Tempo Difference graph or the
Beat Offset graph seem to work.
The bar graphs are only operational when both Sync
Lock LEDs are illuminated. This ensures that you don't
inadvertently try to mix two songs without their tempos
To make the bar graphs operational, either:
a ) Wait for the red beat LED’s to follow the music and tap
the respective Sync Lock button
or b ) Tap the Beat Assist button twice with the beat of
Either method will cause the Sync Lock LED to
T13 The Beat Offset graph is not illuminated, but
the Tempo Difference graph is.
This indicates that one or both of the inputs are not
playing. The Beat Offset graph turns off when there are no
beats available for tracking on either or both inputs. The
graph automatically restarts once both inputs become active
T14 The Beat Offset graph has the green LED
illuminated when the red beat LEDs are a half
beat off from each other.
This indicates that the songs are synced at their half
beats. With rap music and some house, mixing is often done
on the half beats rather than the down beats themselves.
The Beatkeeper intentionally syncs this way to give the DJ
the option of beat-to-beat mixing or beat-to-halfbeat mixing.
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