Optical Sampling Modules
17.
Select the Meas Setup dialog box. Make the following changes:
a.
Select
Meas 1
and make sure the
Source1
button is selected.
b.
In the Source tab, select
C1 on Main
and click the
NRZ
button.
c.
Choose measurement
Select Meas > NRZ – Amplitude > Average
Optical Power
.
d.
Make sure the Meas 1
ON
check box is selected.
18.
Select the Vert Setup dialog box tab and make the following changes:
a.
Select
C1
for Waveform.
b.
Set the Wavelength to match the wavelength of the laser transmitter.
19.
Select the Wfm Database Setup dialog box tab and make the following
changes:
a.
Select database
WfmDb 1
, and select
C3 on Main
as the Source.
b.
Set Database1 to
On
.
20.
Select the Meas Setup dialog box tab and make the following changes:
a.
Select
Meas 2
and make sure the
Source1
button is selected.
b.
In the Source tab, select
C3 on Main
and click the
NRZ
button.
c.
Choose measurement
Select Meas > NRZ – Timing > RMS Jitter
.
d.
Make sure the Meas 2
ON
check box is selected.
e.
Select
Use Wfm Database
.
Test
Follow this procedure to make the clock recovery optical sensitivity range and
recovered clock timing jitter checks:
1.
In the Mode/Trigger dialog box, select the clock recovery rate for C1 that you
want to test as shown in the following table.
NOTE.
Leave Direct selected as the Trigger Source, even though you are selecting
a rate other than None. In this preliminary setup, the clock recovery circuitry is
enabled for the 80C0X-CR Optical Sampling Module, but the main instrument
timebase receives its trigger events from the TRIGGER DIRECT input signal and
not the actual recovered clock.
2.
Set the data rate of the D3186 Pulse Pattern Generator to the rate setting for the
clock recovery rate that you selected in step 1 as shown in the following table).
244
DSA8300 Performance Veri
fi
cation
Содержание 80A00
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Страница 16: ...Important safety information x DSA8300 Performance Verification ...
Страница 213: ...Electrical Sampling Modules Figure 21 Setup to measure Power in DSA8300 Performance Verification 195 ...