
2
2.
press
NNNNNNNNNNNNNNNN
!
0
.
Example
Set
the
base
wavelength
to
1540.000nm,
and
then
set
df,
so
that
the
output
wavelength
is
1507.5nm
(on
an
HP
8168E/F)
1.
Press
4
W
A
VELENGTH
5 .
2.
Press
N
NNNNNNNNNNNNNNNNNNN
nm/GHz
until
the
screen
looks
as
shown
in
Figure
2-2
(that
is
,
to
set
the
wavelength
directly).
3.
Press
4
EDIT
5
and
then
NNNNNNNNNNNNNNNNNNNNNNN
Default
.
4.
Press
NNNNNNNNNNNNNNNNNNNN
nm/GHz
,
to
set
a
relative
wavelength.
5.
Press
NNNNNNNNNNNNNNNN
!
0
The
base
wavelength
is
now
set.
6.
Calculate
the
value
for
df
d
f
=
c
0
c
0
=
2: 998E
8
1507: 500E
0
9
0
2: 998E
8
1540: 000E
0
9
=
4196: 980GH
z
7.
Type
in
the
value
for
df
(4197.0)
on
the
numeric
keypad,
and
press
4
ENTER
5 .
8.
Because
of
inaccuracies
in
the
value
taken
for
the
speed
of
light,
this
gives
a
value
of
1507.499nm.
Use
the
Modify
Knob
to
edit
the
value
for
df
to
get
=1507.5nm
P
erforming
a
W
avelength
Sweep
Y
ou
can
perform
a
wavelength
sweep
when
the
screen
looks
like
this
Figure
2-4.
Setting
Up
for
a
W
avelength
Sweep
Press
4
W
A
VELENGTH
5
and
NNNNNNNNNNNNNNNNNNNNNNN
-Sweep
as
necessary
to
get
this
display
.
2-4
Setting
Wavelength
and
P
ower
Содержание 8167A
Страница 2: ......
Страница 4: ......
Страница 26: ......
Страница 110: ......
Страница 130: ......
Страница 150: ......
Страница 164: ...D Figure D 1 Test Setup for the Wavelength Tests D 4 Performance Tests ...
Страница 168: ...D Figure D 2 Test Setup for the Maximum Output Power Test except HP 8168F D 8 Performance Tests ...
Страница 177: ...D Figure D 5 Test Setup for the Source Spontaneous Emission Test Performance Tests D 17 ...
Страница 240: ......