A Description of the User Interface Getting Started
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Sixth Edition 41
User Interface Features
Introducing Softkeys
A softkey is a key whose function changes depending on the keys that you
have pressed before. The function of the softkey is shown on the display to
the left of the softkey.
Introducing Hardkeys
A hardkey is a key that always has the same function.
Special Module States
Besides parameter or measurement values, you may also see some texts
instead.
<empty>The slot is empty.
<unknown>The installed module is not supported by the firmware
revision.
Slot and Channel Numbers
Each module is identified by a slot number and a channel number.
You can use slot and channel numbers:
• to identify each channel in the overview screen with a number at the side of the
screen,
• to identify each channel in the Details screen with a tab at the top of the screen,
• to identify the channel when referencing the power measured by another chan-
nel, see “How to Reference Another Power Measurement Channel” on page 89,
• to identify the channel when using an application, see “Applications” on
page 229, and
• to identify a channel when using a GPIB command, see the Agilent 8163A/B
Lightwave Multimeter, Agilent 8164A/B Lightwave Measurement System, &
Agilent 8166A/B Lightwave Multichannel System Programming Guide for more
information on GPIB commands.
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