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The VK-20 Vacuum Fluorescent Display (VFD) is capable of showing up to twelve alphanumeric
characters. Its format depends on the mode of operation. In the normal PLAY mode the display
has the following format:
1. One character indicating the selected input number.
2. Four-character input name. That name is fully programmable (See the programming
functions) and can include up to four character from the Latin, Cyrillic or Greek alphabets
or digits.
3. Balance adjustment indicator. Characters L or R indicate that the balance is shifted in the
corresponding direction. A BLANK character means that the gains of both channels are
identical.
4. Volume setting - three digits with the full range of 000 to 140 (See programming section on
Maximum Volume Setting)
FUNCTION Button
This button puts the unit in its programming mode. In addition to its normal PLAY mode, there are
eight programmable functions in the VK-20:
BALANCE Adjustment
RELATIVE VOLUME setting
PHASE setting
MONO/STEREO setting
MAXIMUM volume setting
FIXED volume setting
DISPLAY (Volume) mode
INPUT NAME assignment
Pressing this button while in PLAY mode will switch the unit into programming mode. Once in
the programming mode, pressing the Function button will switch the unit into its NEXT
programmable functions. The unit will stay in the programming mode until the exit command is
issued. To EXIT the programming mode at any time, press and hold the Function button for about
TWO seconds.
DISPLAY ON-OFF Function