Me A Su Re Me N Ts T Il Es; Tx Measu Rement S Tile - Aeroflex 3900 Series Option Manual

M ea su r e m en t s T i l e s
Measure m ent T iles d isplay t he r esults of mea surement s of the signals produ ced by the base sta tion
under te st. Any tw o Measur ement Tiles can be view ed w hen the d isplay is minimized, the y can a lso be
maximized to f ull screen display. The Tiles are selecte d fr om t he d rop- dow n menu as sh own in Fig. 7-7 .
Ther e ar e tw o t y pes of Measure me nt T iles w ithin the BS T1 T est Mode . T hese ar e th e
Tile an d the Modula tion Accur acy Tile s
accessed f rom this men u.
T x M e a su r e m ent s T i le
The Tx Measur ement s Tile is accessed fr om the dro p-do wn me nu on any of t he T ETR A BS
Measure m ent T iles. The Tx Mea surement Til es show th e r esults o f measu rement s made to t he
signal prod uced by the base st ation under te st. The resul ts ar e ind icated in nu me ric a nd gr aphical
for m . Fig. 7-6 show s the Tx Measu rement s Tile in ma xi mi zed view .
F i g . 7 - 6 T E T R A B S T x M e a s u r e m e n t s T i l e - M a x i m i z e d V i e w
Bur s t
T h e B u r s t d r o p - d o w n m e n u a t t h e t o p o f t h e T x M e as u r e m e n t s T i l e s e l e c t s t h e t y p e o f b u r s t o r
b u r s t s o n w h i c h t h e m e a s u r e m e n t s a r e m a d e . B u r s t o p t i o n s a r e :
L i s t e d a s
TS 1+2
T S1
T S2
S yn c
P RB S
B a s e s t a t i o n s m a y p e r i o d i c a l l y u se t h e s e c o n d h a l f o f a n o r m a l b u r s t ( w i t h t r a i n i n g s e q u e n c e 2 )
o r a s y n c b u r s t f o r l i n e a r i z a t i o n . D u r i n g t h i s p e r i o d t h e b a s e s t a t i o n s i g n a l i s n o t e x p l i c i t l y
d e f i n e d a n d t h e se t y p e s o f b u r s t s m a y a p p e a r a s m e a s u r e m e n t f a i l u r e s . S e t t h e B u r s t T y p e t o
T S 1 t o e l im i n a t e t h is p o s s i b i l i t y . S e t t i n g t h e B u r s t T y p e t o T S 2 , T S 1 + 2 o r S y n c d o e s n o t
g u a r a n t e e t h a t t h e T e s t S e t w i l l c a p t u r e b u r s t s c o n t a i n i n g l i n e a r i z a t i o n , s i n c e t h e s e a r e va l i d
b u r s t t y p e s f o r n o r m a l o p e r a t i o n . T o c a p t u r e o n l y b u r s t s c o n t a i n i n g l i n e a r iz a t i o n , s e t t h e b as e
s t a t i o n t o T 1 T es t M o d e a n d s e l e c t T E T R A B S T 1 o n t h e T e s t S e t .
T E T R A B S S y s t e m
. T he Oscillo sc o pe
N ormal burst w ith Train ing S equen ce Type 1 an d N ormal burst w ith
Tr aining Se quence Type 2
N ormal burst w ith Train ing S equen ce Type 1
N ormal burst w ith Train ing S equen ce Type 2
S yn chroni zation burst .
P su edo R ando m Bit Se quence burst wi th no Tr aining Seq uence
and Ch annel Anal yze r
D e t a i l s o f B u r s t
7-7
Tx Mea s urement s
f unction s are also