Technical Note 79_17 - EISCAT

- 2 -2 . " EAS UREMENT SCHEMES FOR PROTOTYPE TEST INGIn Figure l the used me asurement schemes for testing thepro t o t y pe are sketched . . Se ve r a l options ha ve been includeds o it h as been pussible t o a dapt different testing prnceduresto the different interna l ha rdwa r e f unctions. In order t omake full use o f the t ests ys t e m capabilities , the user musthave de t a i l e d knowl edqe a bout the constructiun o f thecorrelator and t o some e xtent a lso t he use of the CORRS I Mp r o g r a m. This can be f ound in ref. 1-3 .This repor t secribes sys tem tes t s, which ha ve been d ividedinto t .wo q roupa : hardwa re tes t s with use of logic statea nalyzer and analog osc i l los cope and system tests withcomputerized handl i ng o f c o rrela t o r da t a . By use o f fixedt e s tpr o g r a ms from the CORRSI M file system, the hardwarejsyste m tests can be made standardize d and r e pe t c : ive . Th ec orre l ato r has a bu i lt-ln data -m emory , whic h simulates t hebuffe r-memo ry at the data input , a nd t he fixed data i npu te nables standardized a nd r epe t etive tests of t he c orrelato ra rithemtical f unctions (da ta p r ocess i ng unit) and t hepo s s Lb i Li t.y o f da ta tab le c omparis on wi th values generatedfrom s o f t wa r e simula t ion .Wh e n a nal0gjdigital o s cilloscope displays are given i n thisrepu rt a listing o f the used pro b i ng points lmainly o ncorrelator back- wiring ) is a t t a c he d.A me a s u r e me n t s t a t i o n f or tes ting the c orrelator has be e nestabl i s he d at the Ramfj ordmoen r ada r s ite. A phot o o f themeas u r e men t s eguipmen t is given i n Figurp. 2 .