RJM Rack Gizmo User Manual

17
The Function Switch 3 and 4 buttons control the Continuous Controller range for all Function Switches:
Function Switch
CC Range
GCX
Number
Function Switch 3
LED
Function Switch 4
LED
80…87
1
OFF
OFF
88…95 (default)
2
ON
OFF
64…71
3
OFF
ON
56…63
4
ON
ON
GCX Compatibility Mode
Function Switch 5 turns on GCX compatibility mode for the Audio Loops. This makes the Audio Loops respond to MIDI
commands like the GCX switcher, manufactured by Voodoo Lab. In GCX compatibility mode, the Audio Loops respond
only to Continuous Controller messages on MIDI channel 16, regardless of the MIDI channel setting. The GCX number is
set by Function Switches 1 and 2 (see above).
Function Switch 6 turns on GCX compatibility mode for the Function Switches. The GCX number is set by Function
Switches 3 and 4 (see above).
CC Disable
Function Switch 7 turns on CC Disable mode. This mode prevents the Rack Gizmo from responding to Continuous
Controller messages, and is primarily used when debugging a rig. In most circumstances, it’s best to keep this option
off.
Bank Select Enable
Function Switch 8 controls whether or not the Rack Gizmo will allow MIDI bank selection. When Function Switch 8 is off,
the Rack Gizmo will ignore MIDI bank select messages. When Function Switch 8 is on, the Rack Gizmo will respond to
bank select messages as described on page 15.
Saving MIDI Channel and Options
Once you’ve set the MIDI channel and options, press the Write button. The Rack Gizmo is now in normal operational
mode.
Invert Mode
Some amplifiers may have inverted polarity on some functions. This can cause the Rack Gizmo to display a function as
off when the function is actually on, and as on when the function is actually off. To correct this, you must first switch the
Rack Gizmo to Invert Mode.
Hold down the Audio Loop 2 button while powering up the Rack Gizmo. Keep holding the button until the LEDs flash.
You are now in Invert Mode.
While in invert mode, use the front panel buttons to light the LED of any function that is inverted. Make certain no other
LED is lit.
Once you’ve selected the inverted function’s associated button(s), press the Write button. The Rack Gizmo is now in
normal operational mode, and the inverted functions should operate correctly.
Momentary Mode
Momentary mode can also be used when controlling channels or functions on an amplifier. Some devices require
momentary-type switching, rather than the more common latching-type switches. (A momentary switch changes

RJM Rack Gizmo Specifications

General

Brand	RJM
Model	Rack Gizmo
Category	Switch
Language	English