TriPoint VertexRSI 7200, Руководство по эксплуатации и обслуживанию

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7 2 0 0 OPERA TIO N
5 - 3 8
F i gure 5-1 1 RD C States D i sp l ay
On systems w i th t w o-speed reso l vers, th i s i nformat i on i s a l so used to determ i ne
the i nterna l a li gnment of the reso l ver ( i .e., the f i ne reso l ver va l ue w hen the coarse
reso l ver va l ue i s 0). Even though i t i s unused on t w o-speed reso l ver systems, POL
f i ne b i ts w ill a l w ays sho w a ll b i ts as 1 ’s. On systems w i thout t w o-speed reso l vers,
the f i ne data f i e l ds shou l d sho w FFFF i n hexadec i ma l (or 1111 1111 1111 1111 i n
b i nary).
US1 and US2 are unused states 1 and 2, and UM i s unused mode, but a ll shou l d
sho w 1 ’s. The status and mode i nformat i on are not usefu l to the user; they are
prov i ded for V ertex eng i neers’ use on l y and are not documented here.
5.8.5.5 A/D st a t e s
A/D St a t e s prov i de the status of the A /D states for each channe l . The d i sp l ay
sho w s ra w data, the 1 2-b i t data from the A /D board ( i n hexadec i ma l and b i nary),
and the status of three f l ags as fo ll o w s:
If the f l ags are off, the d i sp l ay sho w s " --- "
A n O i nd i cates that the A /D i s overrange (saturated)
A n S i nd i cates s i gn, w h i ch i s true i f a pos i t i ve vo l tage i s present; negat i ve
vo l tage read i ngs are unusab l e
A n N i nd i cates that a ne w va l ue i s ready ( N w ill norma ll y be f l ash i ng on and off)