TriPoint VertexRSI 7200, Руководство по эксплуатации и обслуживанию

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7 2 0 0 OPERA TIO N
5 - 4 2
W hen an east/ w est li m i t i s i ntersected and no other prob l em ex i sts, open li m i ts by
i ncreas i ng the Est i m a t e d i n c li n a t i on and/or the L ong i tud e r a ng e va l ue. The box
center l ong i tude shou l d be ver i f i ed to be at the norma l l ong i tude for the sate lli te.
Th i s nom i na l l ong i tude can be obta i ned from the sate lli te operator or may be
est i mated on the O r b i t d a t a screen i f the ax i s are very sma ll .
5.8.5.11 B ack g r ound T a s k s
B ack g r ound t a s k s i nd i cates w hether the background tasks or a w ake or as l eep.
Tab l e 5-1 8 descr i bes each of the tasks.
TAB L E 5-18 BACKG R OUND TASKS
TASK DESC R I P T I ON
PO SITIO NER The task that dr i ves the antenna to a target and ho l ds i t there. PP SOTO P ME R w ill be as l eep
w hen i n St a ndby and a w ake w hen track i ng. St e pt r ack w ill momentar il y put P OS I T I ONE R to
s l eep w h il e i t i s gather i ng data and then w ake i t up aga i n. P OS I T I ONE R w ill a l so be as l eep
dur i ng manua l antenna contro l .
O UIN T F (Outs i de Un i t Interface) Reads the pos i t i on transducers (reso l vers) and does fau l t mon i tor i ng.
O UIN T F shou l d a l w ays be a w ake.
ST _ S OLV ER Used by OPT to bu il d orb i t so l ut i ons. These tasks w ill be a w ake occas i ona ll y w hen a ne w
so l ut i on i s be i ng bu il t. Bu il ds short-term so l ut i ons.
LT _ S OLV ER Used by OPT to bu il d orb i t so l ut i ons. These tasks w ill be a w ake occas i ona ll y w hen a ne w
so l ut i on i s be i ng bu il t. Bu il ds l ong-term so l ut i ons.
SIM ULA T OR Th i s task w ill be A W A KE w hen the A C U i s i n SIM ULA TIO N mode.
T ARGETER Dr i ves the current target. For Mov e to l oo k a ng l e s and Mov e to l ong i tud e targets, TA R GETE R
w ill be a w ake on l y l ong enough to set P OS I T I ONE R to the correct l ook ang l es. Then i t w ill go to
s l eep and rema i n as l eep. For O P T , I nt e l s a t , and St a r t r ack i ng , TA R GETE R shou l d be a w ake at
a ll t i mes.
SC HEDULER Th i s task dr i ves the T a r g e t s c h e du l e r . Th i s task shou l d be a w ake w hen T a r g e t s c h e du l e r i s
operat i ng, and as l eep w hen the schedu l er i s not be i ng used.
NOTE: Wh e n th e ST _ SO L VE R a nd L T _ SO L VE R t a s k s a r e shown, th e
t a r g e t n a m e i s a l so d i sp l a y e d b eca us e th e t a s k ( s ) m a y not n ece ss a ril y
b e bu il d i ng so l ut i ons fo r th e t a r g e t c u rr e nt l y b e i ng t r acke d.
5.8.5.12 S i mu l a t e d T a r g e t
S i mu l a t e d T a r g e t i s usefu l on l y i n SIM ULA TIO N mode. W hen i n SIM ULA TIO N, th i s
sho w s the s i mu l ated target’s current pos i t i on and error and bas i c orb i t i nformat i on.
5.8.5.13 St a r V i e w i ng W i ndows
The St a r V i e w i ng W i ndows screen sho w s the w i ndo w s of v i s i b ili ty (w hen the star
i s w i th i n the soft w are trave l li m i ts of the antenna) for a star. Th i s i s used pr i mar il y
for G/T test i ng of antennas by rad i o stars. Th i s screen sho w s at w hat t i mes of the
day the star w ill be v i s i b l e for use by the tester.