Specifications subject to change without notice
© Digital View Ltd – Doc Ver 1.00 : 13 Jan, 2021 (SP-1920-DUAL-HDMI_manual.doc)
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11 of 42
Summary: Jumpers setting
Ref
Purpose
Note
JA3
Panel power voltage select
CAUTION
: Incorrect setting can damage
panel
See panel voltage setting table 1
JB1
Backlight brightness voltage range
1-2 closed = 5V max
2-3 closed = 3.3V max
JB2
Backlight inverter on/off control – signal
level
2-3 = On/Off control signal ‘High’ = +5V
1-2 = On/Off control signal ‘High’ = +3.3V
Open = On/Off control signal ‘High’ = Open collector
CAUTION
: Incorrect setting can damage inverter.
JB3
Backlight inverter on/off control – polarity
1-2 = control signal ‘high’ = CCFT ON
2-3 = control signal ‘low’ = CCFT ON
JB5
Backlight control type selection
1-2 = VR/Digital switch mount control
3-4 = Analog backlight brightness - voltage range 0~5V
5-6 = PWM (Pulse Width Modulation) brightness
JB7
Backlight control voltage on CNB1 pin 4
(Function when JB5 sets 1-2 closed)
Open = For OSD switch mount control (Default)
1-2 = 0V
2-3 = 3.3V / 5V controlled by JB1
JP7
Internal programming use
Default 1-3 & 2-4 closed
SW3
Panel & function selection
See table 2
SW4
Panel & function selection
See table 3
