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Note
Wh en y ou are testing instr um ents with 2 out put chann els it i s
4
n
ecessary to :
α . Co nfig u re
bot
h
channels .
b.
S wi tch O FF t he chann el that is
n
ot
b
ein g tested
If y o u then test the other channel :
ε .
S
witch ON t h e channel you are test ing, and s witch O FF the ot her
channel .
4 . Set t h e Di g i t izin g Oscill oscope HP 54121 Τ :
ι Press Ειυτο scιαιε
ι Ce n ter one pul se on scree n, e .g . : ΤΙΜΕ/ DIV = 50 μ s/div ,
DELAY = 365 μs,
ι Select th e Dis play me nu
a
nd set the Numb er of Averages to 32
ι Select th e Cha nnel menu
a
nd set t he A ttenu at ion factor to 10
ι Select th e
D
e lta V
m
enu
a
nd turn the voltage
m
arkers On
ι Set the
P
reset L evels = 10-90% and press (AUTO ιενει s ετ
ι Sel ect the Tim ebase menu
a
nd set ΤΙΜΕ / DIV = 2 ns/div,
DELAY = 29 ns
ι Se lect the
D
elta t
m
enu and t urn the
m
arkers On
ι Set S TART ON ED G E =
P
OS1 and ST OP ON ED G E = ΡΟ51
5 . Set p eri od o f HP 8110Α to: P eriod = 1
As
6 . Af ter the averagin g, while t h e oscilloscope i s in t h e
D
el ta t
m
enu,
P
ress th e PRECISE E DGE FI N D key
7 . Check
t
h e HP 8110Α
r
ise times at the
f
ollowin g
l
eading edge
settings :
Table 3-17.
L
ea ding Edge Settings and TR R eference
Oscilloscope ι
P
er
i
od Ι Leading Ι
T
ra
i
li
n
g Ι
Acceptab
l
e
Ι
TR
TIME
D
Ι
V
Edge
Edge
Pt αη .
E
ntr
y
2 π s/
d
iv
1 μα
1 .8
ns
*
2 ns
<2 ns
8 .1 α - 1
5 ηs/
d
iv
1
As
10 ns
5
ns
8 .8 ns το 11 .2 ns
8 .1 α - 2
10 η s/div
1 As
50 ns
50 us
44 .8 ns το 55 .2 η s
8 .1 α - 3
100 η s/
d
iv
5 As
500 ns
500 ns
449 .8 ns to 550 .2 ns
8 .1 α - 4
1 μ s/
d
ίν
50
AS
5
AS
5 As
4 .4998
As
to 5 .5002
AS
8 .1 α - 5
10 μ s/div
500
As
50 As
50 μ.
45
As
to 55
As
8 .1 α - 6
100 μs/
d
iv
5 ms
500
As
200
As
450 As το 550 μ
8 .1 α - 7
10 ms/
d
iv
500 ms
50 ms
50 ms
45 ms to 55 ms
8 .1 α - 8
* P rogrammin g down to 1 .8 n s is all owed, to
m
eet t his specificati on .
Testing the HP 8110Α 3-45
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