HP 743 Series Technical Reference Manual For Oems page 128

Table 5-32 summarizes the timing specifications for the 1024 x 768 and 1280 x 1024 moni-
tors at VESA 75 Hz standard.
Table 5-32 Timing Specifications for VESA 75 HZ Standard
Horizontal active scan
Horizontal "back porch"
Horizontal blanking
Horizontal "front porch"
Horizontal period ("1H")
Horizontal sweep frequency
Horizontal sync width
Pixel clock rate
Vertical active period
Vertical "back porch"
Vertical blanking
Vertical frame rate
Vertical "front porch"
Vertical period
Vertical sync width
In the past, Hewlett-Packard workstation timing was set with sync-on-green. The VESA
standard provides separate TTL syncs, thereby providing an unambiguous way for the moni-
tor to distinguish them.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
D2806A
Signal 1024x768
75 Hz VESA
13.003µs
2,235µs
3.367µs
0.203µs
16.660µs
60.023KHz
1.219µs
78.750 MHz
12.795ms
466.48µs
0.533ms
75.029Hz (non-in)
16.66µs (1H)
13.328ms
49.98 µs (3H)
Electrical Information
A4330A/A4331
1280x1024
75 Hz VESA
9.481µs
1.837µs
3.022µs
0.119µs
12.504µs
79.976KHz
1.067µs
135.000Mhz
12.804ms
475.15µs
0.525ms
75.025Hz (non-in)
13.000µs (1H)
13.329ms
37.520µs (3H)
5-39