160
8163A/B, 8164A/B, 8166A/B User’s Guide
5
Tunable Lasers
To enable external digital modulation using the Input Trigger Connector:
1 Move to the Tunable Laser channel and press [Details].
2 Move to [
Mod
Src
] and press
Enter
.
3 Move to <
Backplane
>, by using the cursor key, and press
Enter.
The
text
Back
appears in the Tunable Laser channel.
External Digital Modulation Using Trigger Feedback
The trigger for External Digital Modulation can be provided by another
module in the same mainframe by using the Trigger Feedback
configuration as described on
External Digital Modulation using Input
on page 159. This can be used to synchronize the
modulation of several sources. To use synchronized modulation:
1 Choose a “master” source module. Set as folows:
Menu -> Modulation Source -> internal
Menu -> Modulation Frequency -> desired value
Menu -> Output trigger mode -> Modulation
2 Set all “slave” modules:
Menu -> Modulation Source -> Backplane (new for DFB modules)
Menu -> Output trigger mode -> disabled (important)
NOTE
If external digital modulation, <backplane>, is chosen for the DFB or
Fabry-Perot Laser modules, the applied triggering should have a 50%
duty cycle and a frequency of 200 Hz - 100 kHz.
•
the average power of the output signal of the Keysight 81689A
Tunable Laser module varies in proportion with the change in duty
cycle, while,
•
the power of the output signal of all other modules adjusts so that the
average power of the output signal is always 50% of the set power.
NOTE
If external digital modulation using the Input Trigger Connector,
<Backplane>, is chosen as the modulation source, [Mod Src], the
81689A and 819xxA compact tunable laser modules behaves differently
from all other modules.
Содержание 8163A
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Страница 50: ...8163A B 8164A B 8166A B User s Guide 49 Getting Started 1 Figure 19 The 8163B System Configuration Menu...
Страница 86: ...8163A B 8164A B 8166A B User s Guide 85 Additional Information 2 Figure 47 MAC Address...
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Страница 137: ...136 8163A B 8164A B 8166A B User s Guide 5 Tunable Lasers Figure 77 Setting High Power parameters...
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Страница 264: ...8163A B 8164A B 8166A B User s Guide 263 Applications 10 Figure 161 The 8164A B Logging Setup Screen...
Страница 271: ...270 8163A B 8164A B 8166A B User s Guide 10 Applications Figure 166 The 8164A B Logging Analysis Screen...
Страница 277: ...276 8163A B 8164A B 8166A B User s Guide 10 Applications Figure 170 The Keysight 8164A B Stability Setup Screen...
Страница 284: ...8163A B 8164A B 8166A B User s Guide 283 Applications 10 Figure 175 The Keysight 8164A B Stability Analysis Screen...
Страница 298: ...8163A B 8164A B 8166A B User s Guide 297 Applications 10 Figure 183 Low Dynamic Range...
Страница 310: ...8163A B 8164A B 8166A B User s Guide 309 Applications 10 Figure 190 Printed Results...
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