Lexicon PCM 91, User Manual

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2-1
Basic Operation
2
Basic Operation
The PCM 91 provides a wide range of control over an extraordinary set of reverb
effects. All of the controls are easily accessed from the front panel and are
described in detail in this section.
The PCM 91 has five basic modes of operation, each of which is selected by
pressing a front panel button (Program Banks, Register Banks, Edit, Control
and Tempo). Each of these first four mode buttons has an LED which lights
when the mode is active. The Tempo LED (unless you elect to have this function
turned off) flashes the current tempo. When Tempo mode is active, no other
mode LEDs will be lighted.
Modes of Operation
The PCM 91 is always operating in one of these modes.
Here, the lighted LED indicates that Control mode is active.
The five mode buttons give you the first level of access to all of the functions and
parameters in the PCM 91.
• Press Program Banks repeatedly to access five banks of 50 factory presets
and a KeyWord mode where programs can be viewed according to type. The
PCM 91's KeyWord function is activated in Control mode.
• Press Register Banks repeatedly to access two banks of 50 memory
locations, called registers, where you can store your customized effects.
Memory cards can be used for storage of additional banks of registers. When
a formatted memory card containing stored registers is inserted, pressing
Register Banks repeatedly will cycle through both the internal and the card
banks. Registers can be sorted and viewed according to type when the PCM
91's KeyWord function is activated in Control mode.
• Press Edit to access all of the available parameters for the currently running
effect.
• Press Control to select system parameters, MIDI, card formatting, etc.
• Press Tempo to set tempo-related values that affect the delay time and LFO
rate parameters of the currently-running effect.