HP 83480A User Manual

Eye, Mask and Eyeline Mode Measurement Tutorials
Making Eye Diagram Measurements
Adjusting the vertical
scale
3. To adjust the vertical scale, press:
4
Channel
5 (on the front-panel of the plug-in module)
N
NNNNNNNNNNNNNNNNNNNNNN
Display on
4. To perform an optical transmitter compliance measurement, activate the
lter to set the channel bandwidth by pressing:
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Bandwidth/wavelength...
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Filter on
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Done
5.
T
o
adjust
the vertical
scale,
press:
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
Scale
A
djust
the
scale
for
a
four
division
data
display,
by using
the
arrow
keys
located
next
to
the
knob
.
Selecting
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
N
N
N
N
N
N
N
N
N
N
N
Channel
autoscale
will
generally
give
you
the
same
results
.
Selecting
the
time
base
6.
T
o
select
the
time
base
,
press:
4
Time
base
5
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
Units
bit
period
(
HP
83480A
only
)
7.
Select
the
bit
rate
of
your
transmitter
.
F
or
this
example
,
select
2.48832
GHz STM16/OC48.
N
NN
NN
N
N
N
N
N
N
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NN
NN
Bit rate ( HP 83480A only ) :::::::::::::::::::::::::::: 2.48832 GHz
Use the arrow keys to select the desired rate.
8. Scale the waveform to show two complete crossings (refer to Figure 5-2)
by pressing:
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
Scale
A
djust
the
display with
the
arrow
keys
,
the
keypad,
or
the
knob
.
9. T
o
center the waveform on the instrument display
, press:
NNNNNNNNN
NNNNNNNNNNNNNNNNN
Position
Adjust the display with
the arrow keys
, the keypad, or the knob
.
5-7

HP 83480A Specifications

General

Brand	HP
Model	83480A
Category	Measuring Instruments
Language	English