Resolution 1024x800 (noninterlaced) Scanning frequency range Horizontal 50.2 kHz (+/- 500Hz) Vertical 47 to 80 Hz Blanking time Horozontal 4.713 usec maximum Vertical 828.83 usec max (15") 831 usec max (19") Retrace time Horozontal 3.713 usec max Vertical 600 usec max Video amplifier bandwidth = +/- 3dB form 50Hz to 70MHz minimum pulse rise and fall time = 5 nanosec (max) measured from 10% to 90% differential tilt = not more than 3% on blanking waveforms video polarity = Positive for Peak Luminance of the CRT video gain = no perceptible change at any brightness setting when a 15nsec pixel is written adjacent to a 60nsec bar Degauss duration < 15 sec type Automatic at power on X-Ray radiation < 0.5 MR/H Horozontal frequency Duration: 19.794 usec (50.519 kHz) front porch 0.942 usec sync 1.88 usec back porch 1.88 usec blanking 4.71 usec display area 15.084 usec Vertical frequency Duration: 16.67 usec (60.0 kHz) front porch 79.176 usec sync 79.176 usec back porch 673.0 usec blanking 828.83 usec (15") 831.0 usec (19") display area 15.841 usec (15") 15.839 usec (19") Note: Apollo 1024x800 color graphics boards use a horozontal frequency of 50.519 kHz, vertical frequency of 60Hz usec = microseconds
The black and white displays were built by PHILIPS in Canada. The plant there has been shut down, when I last enquired with Philips re: purchasing spare parts, I was informed that they did not want to support anymore new customers for this product line. Philips makes the new HP b/w monitors too, but it looks as if everything is manufactured in Taiwan.
The following is a list of technical info for the color and monochrome monitors, also includes information on common monchrome monitor repairs.
Item 15 inch 19 in. (1024x800) 19 in. (1280x1024) -------- ----------------- ------------------- ------------------ Size 16in. 15in.diag 20in. 19in.diag 20in. 19in.diag Gun Precision inline Precision inline Precision inline Convergence Self-convergence Self-convergence Self-convergence Deflect ang 90 degrees 90 degrees 90 degrees pitch 0.31 mm 0.32 mm 0.26 mm Phosphor Med persist P22 Med persist P22 Med persist P22 CRT Type Matsushita Matsushita Matsushita J2P36X 38JFG36X/B 48JFJ50X/B Yoke Matsushita SST Matsushita SST Matsushita SST
Resolution 1024x800 noninterlaced Scanning frequency range Horiz 50.2 kHz +/-500Hz Vert 47 to 80 Hz Blanking time Horiz 4.713 usec max Vert 828.83 usec max (15") 831 usec max (19") Retrace time Horiz 3.713 usec max Vert 600 usec max Video amplifier Bandwidth +/- 3 dB from 50 Hz to 70 MHz minimum Pulse rise/fall 5 nanosecs max measured from 10%/90% Differential tilt Not more than 3% on blanking waveforms Video polarity Positive for Peak Lumiance of CRT Video gain No perceptable difference at any brightness setting when a 15-nano sec pixel is written adjacent to a 60-nano sec bar.<> X-Ray radiation Less than 0.5 MR/H Horizontal Frequency duration 19.794 usec., Frequency = 50.519 kHz Horizontal front porch - 0.942 usec. Horizontal Sync - 1.88 usec. Horizontal back porch - 1.88 usec. Horizontal blanking - 4.71 usec. Horizontal Display Area - 15.084 usec. Vertical Frequency duration 16.67msec., Frequency = 60.0 Hz Vertical front porch - 79.176 usec. Vertical Sync - 79.176 usec. Vertical back porch - 673.0 usec Vertical blanking - 828.83 usec (15") 831 usec (19") Vertical display area - 15.841 msec (15") 15.839 msec (19")
Resolution - 1280 x 1024 noninterlaced Scanning frequency range - Horizontal 73.7 kHz +/- 500 Hz Vertical 68.24 Hz Blanking time - Horizontal 3.328 usec max. Vertical 759.0 usec. max. Retrace time - Horizontal 2.5 usec max Vertical 395 usec max Video amplifier - Bandwidth = +/- 3dB from 50 Hz to 170MHz Pulse rise/fall = 2.7 nanosec. max measured from 10%/90% Differntial tilt = Not more than 3% on blanking waveforms Video gain linearity = Linear analog amplifier is capable of resolving a min. of 32 shades of gray from black to white. X-Ray radiation - Less than 0.5 MR/H Pixel rate - 124.996 MHz Pixel period - 8.000256 nsec. Aspect Ration 5/4 Horizontally displayed pixels - 1280 Vertically displayed lines - 1024 Horizontal frequency - 73.702 kHz Horizontal period - 13.568 usec., pixels 1696 Horizontal front porch - 0.256 usec., pixels 32 Horizontal sync - 1.536 usec., pixels 192 Horizontal back porch - 1.536 usec., pixels 192 Horizontal blanking - 3.328 usec., pixels 416 Horizontal display area - 10.240 usec., pixels 1280 Vertical fields per frame (noninterlaced) - 1 Vertical field frequency - 68.24 Hz Vertical field period - 68.24 msec, lines 1080 Vertical front porch - 40.7 usec, lines 3 Vertical sync - 40.7 usec, lines 3 Vertical back porch - 678 usec., lines 50 Vertical blanking - 759 usec, lines 56 Vertical display area - 13.893 msec, lines 1024
Resolution - 1280 x 1024 noninterlaced Active video time - Horizontal 10.857 usec. Vertical 15.009 msec. Blanking time - Horizontal 3.8 usec. Vertical 616 usec. Front porch - Horizontal 407 nsec. Vertical 58.6 usec. Back porch - Horizontal 1.9 usec Vertical 498 usec. Sync pulse - Horizontal 1.49 usec. Vertical 58.6 usec. Pixel time - 8.47 nsec. Maximum light output - 30 +/- FLB
Pin 1 - ECL Video Pin 2 - No connection Pin 3 - Horizontal sync Pin 4 - Vertical sync Pin 5 - No connection Pin 6 - ECL Video Pin 7 - Video Shield Pin 8 - Horizontal Sync Return Pin 9 - Outer Shield Chassis
Resolution - 1280 x 1024 noninterlaced Active video time - Horizontal 10.240 usec Vertical 13.63 msec Blanking time - Horizontal 3.072 usec Vertical 639.0 usec Front porch - Horizontal 0.256 usec Vertical 39.94 usec Back porch - Horizontal 1.536 usec Vertical 559.0 usec Sync pulse - Horizontal 1.280 usec Vertical 39.94 usec Pixel time - 8.00 nsec
Here are the timing numbers you'll need for your Xconfig file. If you get this to work, please send me your Xconfig.
There are actually two versions of this monitor, one with a 68Hz vertical refresh rate and the other with 70Hz. Here are Xconfig mode lines for both of them (these have been tested with my STB Pegasus VL):
# Apollo 010700-005 1280x1024 Color Display # "1280x1024-68" 124.996 1280 1312 1504 1696 1024 1027 1030 1080 "1280x1024-70" 124.996 1280 1312 1472 1664 1024 1027 1030 1072In order to use one of these monitors with XFree86, you'll need a graphics card that supports the 125MHz pixel clock as well as providing RGB outputs with sync-on-green.
Very happily typing this on one of the 68Hz monitors...
(From Michael Scott and Bill Nott)
There are two primary measures of the maximum effective pixel addressability and refresh rate that a monitor is capable of. The maximum rate that a monitor can refresh the screen is measured in Hertz (cycles/second) and is called the vertical refresh rate (or vertical scan rate). The horizontal scan rate is the number of times that the monitor can move the electron beam horizontally across the screen, then back to the beginning of the next scan line in one second. Most early analog monitors were fixed frequency, meaning that they were intended to work only at one specific vertical refresh rate (often 60 Hz) and one horizontal rate (often this is expressed as a number of pixels, but this isn't really the same). Most older SUN, SGI and other workstation monitors were of this type. Generally, these monitors are limited in their applications, since they require that the incoming video signal falls within narrow timing specifications.
These type monitors also typically use composite video signals (with sync on Green), so are not compatible with most of today's PC graphics controllers. Also note that even if the composite video signal issue is overcome, there are additional issues related to attempting to use such monitors with a PC. Among these are DOS text mode support, and radiated emissions compliance. See "How can I get a fixed frequency (RGB) monitor to work on my PC?" below.
In part due to the desire to produce more flexible monitors (i.e. fewer different models), the lack of PC SVGA/EVGA/etc video standards, and in part due to recognition of an emerging trend toward higher pixel addressability formats within the computer industry, along with a desire to provide an upward migration path for new customers, vendors started to produce monitors capable of syncing to video signals within a range of frequencies. Such monitors are called multisychronous, or Multisync. Multisync is actually a trademark of NEC's, though it has become a generic term for a monitor which is capable of syncing to more than one video frequency. The meaning of multisynchronous has become somewhat muddled. To truly be multisynchronous, a monitor should be able to sync to any frequency of incoming video signal (within reason, of course). However, many so-called multisynchronous monitors can only sync to a number of discrete frequencies (usually 3 or 4).
If the video signal supplied to such a monitor is within the range of it's deflection circuits, the image will be displayed; otherwise, the image may be either not synchronized, or completely blanked. It is also possible to harm some monitors of this type by applying a video signal outside it's ranges, if protective measures were not put into place by the design. Thus, such a monitor will usually operate at the most common video modes, but may not operate at less common modes. This type of monitor may be referred to as a 'banded' design. A continuous frequency design should operate at any frequency within the specified range.
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