Operating Basics
Overview
To perform optical compensations
Control elements and resources
Set save
compensation
values
7.
Click
Compensate and Save
in the Select Action
area. Make sure to save the compensation values.
In-memory compensation values are lost when you
power off the instrument.
Select what to
compensate
8.
Select what to compensate
For DSA8300
: You will need to run two compensations
to compensate the mainframe and all modules. Select
Mainframe
and run the compensation, then select
All
Modules
and run the compensation.
For DSA8200
: From the top pulldown list, choose
All
(default selection) to compensate the main instrument
and all installed modules.
Run
compensation
9.
Click
Execute
to begin the compensation.
10.
Follow any on-screen instructions to disconnect
inputs and install terminations; be sure to follow static
precautions when following these instructions.
Verify that the
compensation
routines pass
11.
The compensation may take several minutes to
complete. Verify that
Pass
appears as
Status
for the
main instrument and for all sampling modules listed
in the Compensation dialog box when compensation
completes.
Compensation
fail actions
12.
If
Fail
appears as the
Status
, rerun the compensation.
If
Fail
status continues after rerunning compensation,
and the instrument has passed the 20-minute warm-up
period, the module or main instrument may need
service. Contact Tektronix Customer Service.
Perform Dark-Level and
User Wavelength Gain
Compensations
Performing a dark-level calibration maximizes the accuracy of the extinction
ratio and other optical automatic measurements you take. Performing a User
Wavelength Gain compensation optimizes an optical channel for your custom
input signal. Use the following procedure to perform either compensation; this
procedure applies only to optical modules.
NOTE.
The user interface (UI) images in this manual are from the DSA8300
instrument. The DSA8200 UI, although different in appearance, has a similar UI
layout as the DSA8300 for most functions.
NOTE.
These procedures compensate the selected module and its current
bandwidth or
fi
lter selection. The compensation values are not saved when
powering off the instrument.
80C12B Optical Sampling Module User Manual
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