NEC MultiSync 20WGX2 Service Manual page 110

6 6 . . M M U U C C ircuit ircuit
The sou The source rce vol voltag tage fo
6 6 . . 1 1 D D e e t t e e c c t t i i o o n n o o f f O O
ower er ke ow key y an and R d RC C IR
6 6 . . 2 2 D D i i s s p p l l a a y y M M ode ode I I dentification dentification
6.2.1Functions 6.2.1Functions
(1) Display mode identification (1) Display mode identification
● ● The display mode of input signal is identified based on Table 1. The display mode of
● ● hen the mo hen t he mode ha de has been i
the the tot total al num numbe ber of
= = T T otal number of lines. otal number of lines. Initial identification
figure wit figure with the number of l h the number of lines for the mode i
hen t hen the det he detecte ected freq
● ●
counted even through it i counted even through it is rge identi
(2) ow (2) ower s er sav avin ing mo g mode
This pow This power savin er saving mode is a
specified below. specified below.
e for I3 r I325 i 25 is 5V s 5V , a , and t nd the s he sy y ste
E E R R S S tatus tatus
IR ca can n on on of off t f the he sy syst stem. em.
input signal is identified based on Table 1.
s been iden denti tifie fied thro d through t
r of li lines nes is is de deter termin mined ed wi with th a fo
Initial identification can be made by
ines for the mode identifi
d freq uenc uency if y if the sy the sync si
s rge identified freq fied freq uency i
de. .
g mode is assumed w ssumed when the fre
stem clo m clock fr ck freq eq uen uency cy is 1
ugh the me he measu asureme rement of ho nt of horiz riz ont
a formul rmula w a whe here H re H ori ori ont
can be made by examining the coincidence of examining the coincidence of the obtained
dentified from the freq ed from the freq uency
nc signal gnal has c has chang hanged, t ed, the to
uency in the same mode. n the same mode.
hen the fre uency uency of the ho of the horiz riz ontal a
7- 7- 3 3
is 11.0 1.0529 529MH MH . .
ontal an al and ve d verti rtical f cal freq req uen
ontal al fre fre ue uency ncy / / ertic ical al fre ert
uency. .
he total n tal number o umber of lin f lines sh
ontal and vert nd vertical si ical signal i
uencie cies, s,
fre ue uency ncy
the obtained
es should ould be be
gnal is as s as