Polaroid 215EPolaview manual Vertical frequency 85.080 Hz 72.8088 Hz 75.0000 Hz

						Getting started
				Preset timing
	VESA 640x480 at 85Hz		VESA 640x480 at 72Hz		VESA 640x480 at 75 Hz
Dot Clock		31.5 MHz		31.5 MHz		31.5 Mhz
Horizontal frequency		37.861 KHz		37.861 KHz		37.500 KHz
A-Period	26.413 µs (832 dots)		26.413 µs (832 dots)		26.667 µs (840 dots)
B-Blanking	6.095	µs (192 dots)	6.095	µs (192 dots)	6.349	µs (200 dots)
C-Sync Width	2.032	µs (64 dots)	1.270	µs (40 dots)	2.032	µs (64 dots)
D-Back Porch	3.048	µs (96 dots)	4.063	µs (128 dots)	3.810	µs (120 dots)
E-Active Time	20.317 µs (640 dots)		20.317 µs (640 dots)		20.317 µs (640 dots)
F-Front Porch	1.016	µs (32 dots)	0.762	µs (24 dots)	0.508	µs (16 dots)
Vertical frequency		85.080 Hz		72.8088 Hz		75.0000 Hz
A-Period	11.754 ms (445 lines)		13.735 ms (520 lines)		13.333 ms (500 lines)
B-Blanking	1.189 ms (45 lines)		1.057 ms (40 lines)		0.533 ms (20 lines)
C-Sync Width	0.079 ms (3 lines)		0.079 ms (3 lines)		0.080 ms (3 lines)
D-Back Porch	1.083 ms (41 lines)		0.740 ms (28 lines)		0.427 ms (16 lines)
E-Active Time	10.566 ms (400 lines)		12.678 ms (480 lines)		12.800 ms (480 lines)
F-Front Porch	0.026 ms (1 line)		0.238 ms (9 lines)		0.027 ms (1 line)
Sync Polarity (H/V)	Negative/Positive		Negative/Negative		Negative/Negative
				Preset timing
	VESA 640x480 at 85Hz		VESA 800x600 at 56Hz		VESA 800x600 at 60Hz
Dot Clock		36.000 Mhz		36.000 Mhz		40.000 Mhz
Horizontal frequency		43.269 Khz		35.156 Khz		37.879 Khz
A-Period	23.111 µs (832 dots)		28.444 µs (1024 dots)		26.400 µs (1056 dots)
B-Blanking	5.333	µs (192 dots)	6.222	µs (224 dots)	6.400	µs (256 dots)
C-Sync Width	1.333	µs (48 dots)	2.000	µs (72 dots)	3.200	µs (128 dots)
D-Back Porch	3.111	µs (112 dots)	3.556	µs (128 dots)	2.200	µs (88 dots)
E-Active Time	17.778 µs (640 dots)		22.222 µs (800 dots)		20.000 µs (800 dots)
F-Front Porch	0.889	µs (32 dots)	0.667	µs (24 dots)	1.000	µs (40 dots)
Vertical frequency		85.008 Hz		56.250 Hz		60.317 Hz
A-Period	11.764 ms (509 lines)		17.778 ms (625 lines)		16.579 ms (628 lines)
B-Blanking	0.670 ms (29 lines)		0.711 ms (25 lines)		0.739 ms (28 lines)
C-Sync Width	0.069 ms (3 lines)		0.057 ms (2 lines)		0.106 ms (4 lines)
D-Back Porch	0.578 ms (25 lines)		0.626 ms (22 lines)		0.607 ms (23 lines)
E-Active Time	11.093 ms (480 lines)		17.067 ms (600 lines)		15.840 ms (600 lines)
F-Front Porch	0.023 ms (1 line)		0.028 ms (1 line)		0.026 ms (1 line)
Sync Polarity (H/V)	Negative/Negative		Positive/Positive		Positive/Positive

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