Operation; Setting The Wavelength; Setting The Optical Attenuation; Calibrating And Setting The Operating Point - Keysight Technologies 81490A User Manual

Getting Started

Operation

Setting the
Wavelength
Setting the Optical
Attenuation
Calibrating and
Setting the
Operating Point
Keysight 81490A Reference Transmitter Module User's Guide, Edition 3.0
1. On your mainframe, move to the channel of the reference
transmitter module.

2. Move to ], and press Enter.
3. Select the wavelength, and press Enter.
1. On your mainframe, move to the channel of the reference
transmitter module.

2. Move to Att] for the wavelength you are using, and press
Enter.
3. Set the attenuation, and press Enter.
For the best possible results, the operating point for the
reference transmitter should be as close as possible to the
center of the modulator's transfer characteristic. This
ensures you can make the best use of the linear part of the
transfer characteristic.
RF Data In
Modulator
Transfer Characteristic
Operating Point
When you turn the instrument on, a default value is used,
and "Unc" or "Uncal" is shown on the display.
The reference transmitter also checks its temperature
periodically. If the temperature differs too much from the
temperature at which the last recalibration was performed,
this is reflected in the modules status line in the user
interface ("Uncal" for 8164A/B, "Unc" for 8163A/B and
8166A/B).

Operation

Optical Output
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