Ector E Rro R R M S Tests - Aeroflex 3900 Series Option Manual

Ve c t o r Er r o r R M S T es t s
test_v ector_e rro r_rms_av g
test_ve ctor_erro r_ rms _max
Sum mary
T h e t e s t _ v e c t o r _ e r r o r _ r m s co m m a n d s m e a s u r e t h e v e c t or e r r o r o f t h e r e c e i v e d s y m b ol s
w i t h r e sp e c t t o t h e i d e a l s y m b o l p o i n t s f o r t h e b u r s t . T h i s m e as u r em e n t i s t a k e n o v e r t h e
m id d l e o f t h e b u r s t m e a s u r e d a t t h e s y m b o l p o i n t s t h r o u g h a T E T R A f i lt e r . T h e R M S v a l u e
i s t h e r o o t m e a n s q u a r e o f a l l t h e s y m b o l s .
T h e R M S V e c t o r E r r o r ( w o r s t c a s e o r a v e r a g e , d e p e n d i n g o n w h i c h o f t h e t e s t s i s s e l e c t e d )
i s m e a s u r e d o v e r t h e n u m b e r o f b u r s t s s p e c i f i e d f o r t h i s t e s t b y t h e
s e t _ v e c t o r _ e r r o r _ r m s _ sa m p l e s c o m m a n d .
Co mmand Par amet er s
N o n e
Rel ate d S cri pt Co mmands
C o m m a n d
set_ptt_timeout
set_vector_error_rms_limit
set_vector_error_rms_samples
R esul ts
I f t e s t c o m p l e t e s . . .
Within limits
Limits exceeded
I f t e s t f a i l s t o c o m p l e t e . . .
PTT timeout
Timeout
Not in call
When a S impl ex call wh en P TT is not alr eady pr essed, user is pr ompted Pl ease pre ss P TT. Wh en
PTT is n ot p ressed wit hin t he pt t_t imeout peri od, t he t est f ails.
While the test run s, a progr ess ba r di splays th e accumula tion of sa mp les.
T E T R A M S A u t o T e s t C o m ma n d s
P a r a m e t e r s
0 ( no ti meout) | 5 to 99 ( in sec)
0.1 to 99.9 (in %)
1 to 250
V ector E rro r R M S Test - A vg CH 3600/ 1 P L04 0 2.6% (10. 0)
V ector E rro r R M S Test - Max CH 3600/ 1 P L04 15 .9% ( 10. 0, F AIL
V ector E rro r R M S Test - A vg, PTT not presse d, F AIL
V ector E rro r RMS Test - A vg, No burst s, FA IL
V ector E rro r R M S Test - Max, N ot in a cal l, F AIL
3-7
D e f a u l t E q u i v a l e n t T i l e
V a l u e
20 se c Au toTest - (N o T ile)
10% Conf ig - Tx Meas
20
Measur ements
E x a m p l e
E x a m p l e
L im its
T est - Tx