Tunable Lasers How to Perform a Wavelength Sweep
126 Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition
NOTE For a <Continuous> sweep, [Step] sets the wavelength interval
between output triggers, if you have set <Output Trigger Mode> to
<Step Finished>, see “How to Use Output Triggering” on page 141.
How to Set the Repeat Mode
The [Repeat Mode] determines how the instrument performs a multi-
cycle sweep.
•Select <Twoway>, if you want to start every odd sweep cycle at [λ
Start] and to start each even sweep cycle at [λ Stop].
•Select <Oneway>, if you want to start every sweep cycle at
[λ Start] and to end every sweep cycle at [λ Stop].
Figure 71 illustrates how these modes work for a three-cycle
wavelength sweep.
Figure 70 The Parameters for a Stepped Wavelength Sweep
Sweep Cycles = 1
λ
t
λ
Stop
Dwell
Step
λ
Start
Time
Figure 71 Repeat Modes
λ
t
t
λ Start
λ Stop
λ
λ Start
λ Stop
<Twoway><Oneway>
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