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F A L L T I Me , 20/80% , M E A S U Reme N T Proced U Re - HP 5363B Operating And Service Manual

Time interval probes
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3-20.
Fa l l Time
(20/80%)
3-2 1 .
I n st rume n t Set u p : H P 53638 T i me I n t e rval P ro b e s , H P 1 8 2 C Osc i l l o sc o p e , H P 80 1 3 8
P u l se G e n e rato r , a n d H P 534 5 A C o u n t e r, o r H P 5370A C o u n t e r , o r H P 5335 A
a s s h o w n in
Figure 3 - 5 .
H P 53638 c o n t r o l s a re set as fol l o ws :
START/STOP switches
START
STOP
T I M E Z E R O/PULL TO A DD 10.00
T I M E ZERO/ P U LL TO ADD 10.00 n s: I N (for HP 5370A or H P 5335 A !
a .
P e rf o rm Tri g g e r Level Ca l i b ra t i o n p roced u re . . See pa ra g ra p h 3-1 1 .
b .
C o n n ect H P 5363 8 A p r o b e t o s p e c i a l T fitti n g
1 250-0 2 1 6 a t H P 8 0 1 3A O U T P U T + , c o n n ecto r .
c .
M e a s u reme nt d i s p l a yed o n H P 5345 A C o u n t e r i s fa l l t i me p l u s 1 0 n s . M e a s u reme n t
d i s p l a yed o n H P 5370 , o r H P 533 5 A i s a c t u a l fa l l time.
53 45 A
CH A
I CH
B
I
'----------- 1 -'- - ---
I
I
-
,---
80138
Figure 3-5. Rise T ime and Fall T ime Measureme n t Ins trument Connec tions
Mea surement Proced u re
E x c e pt for H P 53638 i n st rume n t c o n t r o l s a re set a s s h o w n i n
1
2
3
A
+
o
+
A
o
ns:
53 35 A
I
I
CH A
CH
I
- -
- "-
182 C
4
5
6
.4
o
.1
o
OUT
H
P 5345A)
Ifor
H P 1 2 50-0655 · 8 N C a n d a d a pte r H P
I
5370A
B
- --- --
1825A
M od e l 53638
O p e rati o n
a re c o n n e cted
I
Ta b le 3 - 1.
-
---
START
IJ6)
STOP
IJ5)
53638
3-7

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