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Displaying a Test Signal on a JumboTron Display
Unit
You can display eleven types of test signals on a JumboTron display unit.
Use this mode to clear the cause of the malfunctions of a unit or to check
the operation of a unit, cell or pixel after replacing or adjusting it.
After selecting the type of the test signal, you can specify precisely the
luminance, brightness, scroll speed and color bar width of each test signal.
The types of the test signals and their functions are described below.
Type of test signal
WHITE
BLUE
RED
GREEN
STAIR STEP
COLOR BAR-V
COLOR BAR-H
CHARACTERS
BEAM BLANKING
TEST
RASTER
POWER switch
CURSOR ◊/√/∫/ı
buttons
12
Operations and circuits to be checked
White signal
Blue signal
Uniformity of pixel light emission, etc.
Red signal
Green signal
Uniform bit signal
Bit errors, etc.
Vertical color bar
signal
Horizontal color bar
Timing of data latch, etc.
signal
Character signal
Pattern with
alternate line
Cathode switching circuit
blanking
Scrolls all the test
All-round check of a JumboTron display
signals.
unit or a cell
Adjusts the
luminance of red,
green and blue,
Characteristics of pixel light emission,
separately in the
etc.
range of 256 levels.
SPG button
SETUP button
ENTER button
Numeric buttons
1 Selecting the test signal to be displayed
1
Set the POWER switch to ON.
The title menu appears in the display window, then the display changes
to the UNIT type select menu.
Title menu
J u m b o T r o n
J M E - U A 2 0 0
2
Press the ◊ or √ button to select the type of the JumboTron display
unit, and press the ENTER button.
3
Press the SPG button.
S P G M o d e
S P G : W H I T E
L U M : 0 7 F
B R T : 0 7
S P D : - -
W I D : - -
B / 0 7 F R / 0 7 F G / 0 7 F
U N I T T Y P E : J T U - 3 5
4
Select the signal to be displayed with the ∫ or ı button or the 0 to A
numeric buttons.
The test signal mode changes in the following order each time you
press the ∫ button. (Pressing the ı button changes the mode in the
reverse order.) You can also select the test signal mode by pressing the
button in brackets.
WHITE [0]
BLUE [1]
RASTER [A]
Example: Selecting COLOR BAR-V by pressing ∫ or ı button or
numberic button 5.
S P G M o d e
S P G : C O L O R B A R - V
L U M : 0 7 F
B R T : 0 7
S P D : 0 3
W I D : 0 1
U N I T T Y P E : J T U - 3 5
5
Press the ENTER button.
The selected test signal is displayed on the JumboTron display unit.
UNIT type select menu
S O N Y
S e l e c t U N I T T y p e
J T U - 3 5 S e r i e s
J T U - 1 7 S e r i e s
v e r 1 . 0
L D U - 1 5 S e r i e s
Type of test signal
Current luminance
Current brightness
Scroll speed
Color bar width
Luminance of R, G and B of the cell in the
upper left corner of the unit (The data is
displayed in hexadecimal.)
JumboTron display unit type
RED [2]
GREEN [3]
STAIR STEP [4]
COLOR BAR-V [5]
COLOR BAR-H [6]
TEST [9]
BEAM BLANKING [8]
CHARACTERS [7]
(Continued)
13
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