NEC MultiSync FP1350 - Page 170

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c. Fh Band
fH7
33.6kHz
36.6kHz
41.5kHz
52.7kHz
57kHz
69.5kHz
82.6kHz
115kHz
101kHz
fH3
fH5
fH1
fH2
fH6
49kHz
65.5kHz
30.8kHz
45.8kHz
(Fig. 6.1) Output fh Band status (IC571)
Attention: fH1 to 7 Band signals are output for horizontal output circuit control to keep the horizontal
linearity constant.
d. Degaussing Control
Manual degaussing signal. IC801 pin 53 becomes High for 3 seconds when user presses the
“PROCEED” switch while “DEGAUSS” (MENU(u) - “BRIGHTNESS & CONTRAST”) or “GLOBALSYNC”
(MENU(u) - “TOOL2”) is highlighted, the monitor is powered on.
DAC - ”ROTATE”,”GLOBALSYNC”, and “CONVERGENCE” data value is set to center, while
degaussing. This pin will be LOW in normal condition.