IBM RT Series Hardware Reference Manual page 37

TNL SN20-9844 (March 1987) to 75X0235
Description
The Extended Monochrome Graphics Display is a high resolution monochrome display which
supports an addressable format of 1024 dots horizontally by 768 scan lines vertically. The
display screen is refreshed at a rate of 60 Hz.
The Extended Monochrome Graphics Display has two attached cables. One cable provides the
direct-drive signal interface to the Extended Monochrome Graphics Display Adapter. The
second cable provides ac power to the display. The display operates on 120 vac, 50/60 Hz or
220 vac, 50/60 Hz depending on the model.
The display uses a 15-inch (diagonal) high contrast monochrome cathode ray tube (CRT). The
CRT and associated analog circuits of the display are packaged in an enclosure that allows the
display to sit either on top of the IBM 6151 system unit or on a nearby tabletop or desk with
other R T PC system units. The display enclosure includes a tilt and swivel base which allows
the display screen to be adjusted by the user for the best viewing conditions. The display has
two operator controls. One operator control is used for contrast. The other control is used for
brightness and the power on and off switch.
Operating Characteristics
Operating characteristics of the display are as follows:
Screen
• Etched surface for reduced glare
• 1024 dots horizontal by 768 scan lines vertical.
Extended Monochrome Graphics Display 1