Doepfer Pocket Dial (device no longer available) - Manual (Page 39)

С Т У Ф Х Ц Ч Ш Щ Ъ С Т У Ф Х Ц Ч Ш Щ Ъ User's Guide Page 39
Additional technical information
Merge capacity
In case of a high data density at the MIDI input the Pocket Diall will not be able to add it's own data as
the MIDI transmission rate is limited and cannot be increased by the Pocket Dial. To avoid this the MIDI
In data should be reduced to a lower transmission rate.
Scanning rate of the encoders
The scanning rate was adjusted to a value that allows a good fine resolution for slow movements but no
plugging up of the MIDI transmission for fast movements. Besides most of the MIDI devices would not
be able to process such high data rates without problems.
Data feedback
Pay attention to two restrictions concerning data feedback for absolute data:
•
Only MIDI controllers (control change messages) are processed, i.e. no pitch bend, after touch,
NRPN, XG SysEx strings can be updated. Please refer to the preset descriptions for details.
•
For the feedback function all controllers must have the same MIDI channel assignments in the 4
presets (bank 1~4) that have to be updated. This means that the MIDI channel for knob 1 has to be
the same in all 4 presets, the MIDI channel for knob 2 has to be the same in all 4 presets and so on.
To simplify matters we recommend to use the same MIDI channel for all controllers (e.g. the master
channel) or to assign the MIDI channels 1~16 to the 16 knobs. If the feedback/update function
seems not to work correct please check if the same channel assignments are made in the 4 presets
to be updated. In the factory presets this is not true in every case as we wanted to keep the first 64
presets compatible with Pocket Control and Pocket Fader (e.g. presets 5,6,7,8). If you want to use
one of these preset sets please modify the MIDI channel assignments with the editor program so
that they correspond to the above remarks.
Memory for absolute values
As described in the chapter 'Functions of the buttons' the 16 absolute values of the 16 knobs can be
stored in the preset – if desired. When a preset is called up (by DIP switch changing of incoming MIDI
program change message) this value is transferred into the 16 work buffers of the 16 knobs. But the
data are not yet sent via MIDI. If this is desired one has to trigger a snapshot (see chapter 'Functions of
the buttons') or to operate the knob(s) in question. This was made intentionally as it might be desirable
to select a new preset without transmitting the new absolute data but to update the new data from the
device controlled by the Pocket Dial after the preset selection.
Of course the storage of absolute data has no meaning if relative data (inc/dec) are used.
The storage of absolute data may be used to obtain a small sound preset management. In this case the
presets contain the same assignments knobs to MIDI controllers and only the stored absolute values are
different – provided the number of available presets (128) is sufficient for this application.
No storage of absolute data in preset 128
The set of absolute data in preset 128 is used for internal purposes and cannot be used to store
absolute data. If this part of the memory is read out (e.g. with an editor program) of a snapshot is
triggered always the value 127 appears.