Tektronix TLA715 Series, Service Manual

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Specifications
1- 4
TLA715 Dual Monitor Portable Mainframe Service Manual
Table 1- 2: Display system
Characteristic Description
Classification Standard PC graphics-accelerator technology capable of supporting both internal color LCD
display and two external color VGA, SVGA, or XGA monitors
Display memory 4 MB SDRAM clocked up to 100 MHz, no external video memory
Display selection Hardware sense of external SVGA monitor during BIOS boot sequence; defaults to internal
color LCD display (indicated by two beeps); automatically switches to external SVGA monitor, if
attached (indicated by one beep).
Dual (simultaneous) display of external SVGA monitor and internal color LCD is possible via
special CMOS “simulscan” setup, as long as internal and external displays operate at same
resolution (limited to 800x600 on current LCD) and display rates (simulscan mode indicated by
three beeps).
Four beeps during the BIOS boot indicates a monochrome LCD was found (not supported). Five
beeps indicates no recognizable LCD or external monitor was found.
Dynamic Display Configuration 1 (DDC1) support for external SVGA monitor is provided.
External display drive 1 VGA, SVGA, or XGA-compatible analog output port. Display size is selected via Win2000
display applet.
Display Size
(Primary with Silicon motion chip) Resolution (Pixels) Colors Refresh Rates
640 x 480 256, 64 K, 16.8 M 60, 75, 85
800 x 600 256, 64 K, 16.8 M 60, 75, 85
1024 x 768 256, 64 K, 16.8 M 60, 75, 85
1280 x 1024 256, 64 K, 16.8 M 60
1600 x 600 256, 64 K 60
1600 x 1200 256, 64 K 60
(Secondary with 815E chip set) Resolution (Pixels) Colors Refresh Rates
640 x 480 256, 64 K, 16.8 M 60, 75, 85
800 x 600 256, 64 K, 16.8 M 60, 75, 85
1024 x 768 256, 64 K, 16.8 M 60, 75, 85
1280 x 1024 256, 64 K, 16.8 M 60, 75, 80
1600 x 1200 256 60, 75
Internal display
Classification TFT (Thin Film Transistor) 26 cm active-matrix color LCD display, CCFL backlight, intensity
controllable via software.
Resolution 800 X 600, 262, 144 colors with 211.2 mm (8.3 in) by 158.4 mm (6.2 in) of viewing area
Color scale 262, 144 colors (6-bit RGB) with a color gamut of 42% at center to NTSC