Getting Started A Description of the User Interface
40 Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition
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 channel, see “How to Reference Another Power
Measurement Channel” on page 83,
• to identify the channel when using an application, see
“Applications” on page 213, 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.
The slot number represents the module’s position in the mainframe.
Front-loadable modules are numbered:
• from one to two from left to right for the Agilent 8163A/B,
• from one to four from left to right for the Agilent 8164A/B, and
• from one to seventeen from left to right for the Agilent 8166A/B.
These numbers are displayed on the front panel beside each module
slot. The Agilent 8164A/B slot for back-loadable modules is numbered
zero.
NOTE Modules with two channels, for example, the Agilent 81635A Dual Power
Sensor, use the channel number to distinguish between these channels.