(2) P r e s s the CURSOR MODE s w i t c h to s e l e c t the time and frequency mode. A l i g n the A R E F
c u r s o r t o the 101 point and the,
A
c u r s o r to the 901 p o i n t . Read the measurement.
8 — 1 1 M e a s u r i n g P u l s e J i t t e r
P u l s e j i t t e r w i t h a r e l a t i v e l y long c y c l e may be measured u s i n g the B sweep f u n c t i o n .
1) Apply the s i g n a l t o the INPUT t e r m i n a l . A d j u s t the a m p l i t u d e t o 5 d i v i s i o n s w i t h the
VOLTS/DIV and V. VARI c o n t r o l s . S e t the VOLTS/DIV and H. VARI t o CAL. D i s p l a y t h e
waveform i n an e a s y - t o - s e e p o s i t i o n w i t h the SWEEP TIME/DIV c o n t r o l .
P r e s s the x 1 0 MAG s w i t c h i f n e c e s s a r y .
2) S e t t h e H. MODE c o n t r o l t o ALT o r AFTER' D. A d j u s t t h e B SWEEP TIME/DIV and DELAY
POSITION c o n t r o l s so t h a t the p u l s e edge to be measured i s i n t e n s i t y - m o d u l a t e d .
| NOTE
:
1
I f t h e m a g n i f i c a t i o n o f A sweep and B sweep i s h i g h e r t h a n s e v e r a l h u n d r e d
m a g n i f i c a t i o n s when the AFTER. D f u n c t i n i s used, d e l a y j i t t e r i s produced. The
d e l a y j i t t e r l e v e l of the o s c i l l o s c o p e i s l e s s than 0.1 V a t 100 m a g i n i f i c a t i o n s .
45
M e a s u r e d v a l u e
R E F cursor
cursor
Figure 18-2 Measuring R i s e ( F a l I ) Time
