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Checking the JumboTron Display Unit Functions
Checking the operation of the test signal generator in a JumboTron
display unit (UNIT SPG)
1
Select UNIT SPG from the UNIT CONTROL menu.
The UNIT SPG menu appears in the display window.
2
Press the ◊ or √ button to select the desired test signal, and press the
ENTER button.
The test signal generator in the unit starts operating.
When you select "Stair Step," "Color Bar" or "Characters" (not
selectable for LDU-15), the selected test signal scrolls.
When you select "Free Running," various test signals automatically
scroll one after another.
3
To stop scrolling, press the √ button to select "Stop," then press the
ENTER button.
4
Press the UNIT CONTROL button to finish checking.
The display window returns to the UNIT CONTROL menu.
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U N I T C O N T R O L
U N I T S P G
S t a i r S t e p
C o l o r B a r
C h a r a c t e r s
F r e e R u n n i n g
S t o p
U N I T T Y P E : J T U - 3 5
Checking the communication between the controller and a JumboTron
display unit (Ask UNIT Type)
To check whether the communication between the controller and a
specified unit is correct or not, the controller sends the unit a signal to ask
for the type of the unit. If communication is correctly carried out, the unit
type appears in the display window.
1
Select UNIT Type from the UNIT CONTROL menu.
The "Ask UNIT Type" menu appears in the display window.
2
Press the ◊ or √ button or the 0 to 9 numeric buttons to select the unit
number to be checked, and press the ENTER button.
If communication is correctly carried out, the unit returns the signal to
display its unit type (JTU-35, JTU-17 or LDU-15) in the display
window.
Example: Checking the communication with the unit No. 02
3
To check other units, press the ENTER button again, then repeat step
2.
4
Press the UNIT COTNROL button to finish checking.
The display window returns to the UNIT CONTROL menu.
If the selected unit number does not exist or the
communication is not carried out correctly
The "Communication Error!" appears in the display window instead of the
unit type. Check the cause and try checking the communication again.
U N I T C O N T R O L
A s k U N I T T y p e
Screen number to be checked
S c r e e n N o . : A l l
U n i t A d d r e s s : 0 1
Unit number to be checked
U N I T T Y P E : J T U - 3 5
U N I T C O N T R O L
A s k U N I T T y p e
S c r e e n N o . : A l l
U n i t A d d r e s s : 0 2
Unit type in use
U N I T T Y P E : J T U - 3 5
U N I T T Y P E : J T U - 3 5
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