Lexicon PCM 91 - Page 24

2-2 Basic Operation
Lexicon
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. MODES OF OPERATION 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.
• 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.
NAVIGATING A MATRIX All of the controls available in a mode are arranged in a matrix of up to 10 columns (numbered 0-9) and 10 rows (each numbered .0-.9). This arrangement allows any one of as many as 100 parameters to be selected simply by using the SELECT knob and the Up and Down buttons to select a position in the matrix. GO OR PRO The PCM 91 offers a choice between two levels of Edit mode parameter access. We call these Go mode and Pro mode. Go mode makes use of an extra row in the edit mode matrix called the Soft Row, where you can assign as many as 10 effect parameters or Custom Controls for easy access. Selecting Go mode (Control mode 1.0) limits the action of the Edit button to displaying only the Soft Row parameters assigned to the current effect.
The PCM 91 always operates in one of these modes.
Here, the lit 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.