Getac 9270D Service Manual page 134

4.23 Analog Display Interface Signals
Name
CRT_RED
CRT_GREEN
CRT_BLUE
DAC_IREF
CRT_HSYNC
CRT_VSYNC
CRT_DDC_CL
K
CRT_DDC_DA
TA
CRT_IRTN
Type
O RED Analog Video Output: This signal is a CRT Analog
A video output from the internal color palette DAC.
O GREEN Analog Video Output: This signal is a CRT Analog
A video output from the internal color palette DAC.
O BLUE Analog Video Output: This signal is a CRT Analog
A video output from the internal color palette DAC.
Resistor Set: Set point resistor for the internal color palette
I/O
DAC. A 1 kohm 1% resistor is required between DAC_IREF
A
and motherboard ground.
CRT Horizontal Synchronization: This signal is used as the
O
horizontal sync (polarity is programmable) or "sync interval".
HVCMOS
2.5 V output
O CRT Vertical Synchronization: This signal is used as the
HVCMOS vertical sync (polarity is programmable). 2.5V output.
I/O
Monitor Control Clock
COD
I/O
Monitor Control Data
COD
I/O
Monitor Interrupt Return
COD
Description