HP 8753D Option 011 - Page 266

A11 Phase
Lock
T
o observ
e the
A11 analog
bus no
des
p
erform
step
A11,
b
elo
w.
Then
follo
w
the no
de-specic
instructions.
Step
A11.
Press:
4
PRESET
5
4
MEAS
5
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
ANALOG
IN
4
MARKER
5
4
SYSTEM
5
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
SERVICE
MENU
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
ANALOG
BUS ON
4
FORMA
T
5
N
N
NN
NN
NN
NN
N
N
N
N
MORE
N
N
NN
NN
NN
NN
N
N
N
N
REAL
No
de
13
V
CO
T
une
2
(not used)
No
de
14
Vbb
Ref
(ECL
reference
v
oltage
lev
el)
P
erform
step
A11,
ab
o
v
e,
and
then
press
4
MEAS
5
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
ANALOG
IN
4
14
5
4
x1
5
4
SCALE
REF
5
4
.3
5
4
x1
5
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
REFERENCE
VALUE
4
-1.29
5
4
x1
5
The
trace
should
b
e
within
0.3
V
(one
division)
of
the
reference
v
alue.
Vbb
Ref
is
used to
comp
ensate
for ECL
voltage
drift.
DRAFT
3/21/106 15:14
Service Key Menus and Error Messages 10-27
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