HP 8110A Service Manual page 96

Note Ι
When y ou are test ing instruments wit h 2 output ch ann els it is
n ecessar y to :
Test 8 .2 b : M i n.Trailing e d ge fo r Level
W indow >±5 ν
α . Configure bot
h c
hannels .
b . S wi tch OFF the ch annel that i s not
b
eing tested
If y ou th e n test the ot h er c hannel :
ε .
S
wi tch ON the ch annel y ou are testing, and s witc h O FF the ot her
ch annel .
4 . Set t he Di g i tizing Osc ill oscope HP 54121 Τ :
ι Press αυτοscαιε
ι Select t h e Display m enu
a nd set the Number of Averages to 32
ι Select t h e Channel menu an d set the
A
ttenuatio n factor to 20
ι Select t h e Timeb ase
m
enu
a nd set ΤΙΜΕ / DIV = 50 μs/div,
DELAY = 365 μs
ι Se l ect t h e D elta V menu
a
nd t urn the
v
oltage
m
arkers On
ι Set t h e
P
reset
L
evel s = 10-90% and
p
ress (AUTO LEVEL SET)
ι Se l ect t h e Tim ebase
m
enu
a nd set ΤΙΜΕ /DIV = 2 ns/div,
DELAY = 29 ns
ι Se lect t h e
D
elta t
m
enu
a
nd turn t he
m arkers On
ι Set S TART ON EDGE = P OST an d S T O P ON EDGE = POS1
5 . Set HP 8110Α
P
eri od = 1 μs
6 . On the Sco p e
p
ress PRECISE EDGE F I ND in the
D
el ta t
m
e nu
7 . C h eck t h at t he HP 8110Α
r
ise time is < 2.5
n
s
8 . Enter th e result in the
T
est
R ep or t as TR
e
ntry 8 .2 α - 1
1 . Set t h e Scop e timebase to:
ι ΤΙΜΕ /DI V = 2 ns/div
ι DELAY = 529 n s
ι Se l ect t h e
D
elta t
m
enu
a
n d tur n t he
m
arkers ON
ι Set S TART ON EDGE = NEG1 and ST O P ON EDGE _
NE G I
ι Press
Pr
ecise
Ed
ge
F
i
nd
2 . Check t hat the HP 8110Α
f
all time is < 2.5 ns
3 . Enter t he result in the
T
est
R
eport as TR
e
ntry 8 .2b - 1
Note Ι
R
ep eat t h e en ti re test
f or the second channe l, if i t is in sta ll ed
Testi ng t he HP 8110Α 3- 4 9