I.
Output
P
ower
T
est
1.
Make
sure
that
cable
connectors
and
detector
windows
are
clean.
2.
Turn
instruments
on,
enable
the
laser
output
of
the
HP
81554SM
and
allow
instruments
to
warm
up
for
at
least
20
minutes
.
3.
On
the
power
meter:
a.
Set
to
the
wavelength
displayed
for
the
HP
81554SM
source
channel.
b.
Make
sure
that
the
CAL
parameter
on
the
power
meter
is
set
to
zero
.
c.
With
the
connector
adapter
,
on
the
optical
head,
covered
with
a
plastic
cap
,
press
4
Zero
5
to
zero
the
power
meter
.
4.
Connect
the
equipment
as
shown
in
Figure
D-1.
Figure
D-1.
P
erformance
T
est
Setup
5.
On
the
HP
8153A
with
the
module
under
test:
a.
Press
4
Pa
ram
5
until
the
AUX
parameter
is
selected.
Make
sure
that
this
parameter
is
set
to
CW .
b.
Press
4
Pa
ram
5
until
the
ATT
parameter
is
selected.
Make
sure
that
this
parameter
is
set
to
zero
.
6.
Measure
the
output
power
and
note
the
result
in
the
T
est
Record.
II.
Attenuation
Function
T
est
7.
On
the
power
meter
,
press
4
Disp! Ref
5 .
Press
4
dB
5
to
select
a
display
in
dB
.
8.
Using
the
modify
keys
on
the
HP
8153A
with
the
module
under
test,
increase
the
attenuation
and
check
that
the
output
power
changes
.
Note
the
reaction
on
the
T
est
Record.
D-4
HP
81554SM
P
erformance
T
ests
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