
4.15.4 Nulling Display Mode Operation
When nulling controls on a input module the LEDs on the module are used to show
when the control matches the recalled position. The LEDs are used differently when
nulling switches as described below.
■
Nulling Display Mode for Switches
When nulling any one of the 6 mechanical switches in Horizontal or Vertical Nulling
mode, a switch in the wrong state will be indicated by all 16 Input module status LEDs
on.
■
Nulling Display Mode for Knobs & Faders
When a knob or fader is being nulled in Horizontal or Vertical Nulling mode, the LEDs on
that input module will display the degree and direction of correction required for the
selected knob. If all LEDs are off then the control is considered nulled. LEDs light from
the center up if the knob needs to be turned clockwise; from the center down if the knob
needs to be turned counter-clockwise. LEDs closer to the center will indicate smaller
degrees of error between the desired position and the actual position of the knob.
In either direction there are 8 LEDs available for displaying amount of correction required.
The LED resolution (number of degrees per LED) is not linear—the further from the
center the LEDs, the more degrees of rotation they represent.
■
Nulling Resolution
At any time during the nulling process the user can select a knob/fader nulling resolution
via the LCD Menu Keys. Three choices are available:
• Fine
• Medium
• Course
The tradeoff of Fine versus Coarse resolution is accuracy versus resetting time. Fine
resolution requires more “tweeking” and therefore increases the time to reset the
console.
Since resolution can be changed while resetting, it is possible to set the resolution to
Coarse while resetting less critical controls, such as Mic Trim, then switch to Fine
resolution for more critical controls, such as EQ and Aux Sends.
4.15.5 Exiting Image Recall Mode
The operator can press any LCD function key to exit Image Recall mode at any time.
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STATUS 18R
Operation and Maintenance Manual
Section 4 - Operation
August 1999
Meter
Solo
Group
Recall
Automation
Misc
** VERTICAL NULLING **
COARSE MED FINE SWITCH
Vertical Nulling Display
8
6
4
2
0
2
4
6
8
10
12
16
20
24
28
36
Desired
Position
Actual
Position
8
6
4
2
0
2
4
6
8
10
12
16
20
24
28
36
Desired
Position
Actual
Position
= LED OFF
Knob/Fader Nulling Display