Lexicon PCM 91 - Page 46

2-24 Basic Operation
Lexicon
COMPARE Whenever you edit a PCM 91 effect from the front panel, the LED in the Compare button will light. This lets you know that the effect has been altered since the last store operation, and that the edit compare function is active. Whenever this light is on, you can press Compare to hear the original version of the effect. A message will be displayed to inform you that the stored version of the effect is being loaded. Although this message is only displayed briefly, the Compare LED will flash to let you know the effect you are hearing is the stored version. While Compare is on, you can use the SELECT knob and the Up and Down buttons to view parameter values in the stored effect. Press Compare again to reload your edited version. Another message will be displayed, and the Compare LED will stop flashing and remain lit until you store your edited version, or select and load another effect.
Note: Altering parameter values with patched sources other than ADJUST or Custom Controls will not light the LED.
BYPASS The front panel Bypass button is always active, and will turn on the type of bypass (AllMute, InputMute, OutputMute, or Bypass) selected in Control Mode 1.3. When you press Bypass, the button LED will light and a message will be displayed to inform you that bypass is on. The display message will also indicate the type of bypass which is in effect. Press Bypass again to turn both the LED and the bypass condition off. A brief display message will inform you that bypass is off. Press and hold Bypass to display the current state and type of bypass. STORE OPERATIONS Turning Memory Protection On The PCM 91 is shipped with its Memory Protection option off. To turn Memory Protection on, press Control and use Up and Down and SELECT to display matrix location 1.5. The display should read:
System Mem Protect 1.5 Off
Compare
Compare
Compare is on stored effect active
The Compare light is off until you make changes to an effect.
A
s soon as you alter an
effect, the Compare light will go on.
If you press Compare while the light is on, a message will be displayed . . . . . . and you will hear the original (stored) version of the effect. You can display the parameter values of the stored effect with Select and Up and Down.
The Compare light will flash until you press Compare again to reload the edited version of the effect. While Compare is on, you cannot select another effect.