Delay Bypass; Repeat Hold - Lexicon Prime Time 93 Owner's Manual

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whenever the DELAY ADJUST control is out of its counterclockwise detent
"(cal)". The UNCAL indicator lights when M.93 is in the VCO mode and serves
to remind the user that the indicated delay times are no longer accurate.
Rather, the delay times are a function of the VCO frequency which can be
varied over a 2:1 range resulting in a delay sweep from 1 times the indi-
cated delay settings to .5 times the indicated settings. The VCO (and
hence the delay time) can be varied manually with the DELAY ADJUST control,
controlled externally with a pot or voltage, or modulated by an internal
triangle function generator.
The frequency of the triangle waveform is determined by the FREQUENCY con-
trol (. 1 Hz to 20Hz), while its amplitude is determined by the DEPTH con-
trol. The DEPTH control pans between the manual DELAY ADJUST and the tri-
angle function generator. The DEPTH control can thus select either all
manual control, all function generator control, or a mix of the controls.
Normally, the triangle waveform extends up and down from the manually se-
lected DELAY ADJUST level unless the waveform excursion exceeds the limits
of the range. In that case the level shifts towards the middle so that
there are no settings which will force the VCO outside of its correct op-
erating range. In addition, the VCO will not alter the signal bandwidth
and it will not cause aliasing problems.
2.5 DELAY BYPASS
The DELAY BYPASS sends the output of the INPUT MIX directly to the OUTPUT
MIX MASTER control bypassing the delay electronics and disabling the OUTPUT
MIX and RECIRCULATE functions. The DELAY BYPASS indicator lights when in
the bypass mode. The DELAY BYPASS can also be operated externally.
2.6 REPEAT HOLD
The REPEAT HOLD function repeats an audio segment idefinitely without de-
gradation. The repeated segment consists of the audio entered into the
delay line just before pressing the REPEAT HOLD button. Pressing the button
again deactivates the REPEAT HOLD, outputting the contents of the delay line
to make room for new input. When activated, the REPEAT HOLD blocks addition-
al input to the delay line memory so that no
f~rther
delay processing (in-
cluding delay recirculation) can occur. The repeating segments from A and
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