Giga-tronics 8003, Руководство по эксплуатации

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8003 Precision Scalar Analyzer
2-12 Manual 20791, Rev. C, June 2001
2.3 Softkey Functional Description
This is a detailed description of the functions for setting up and preparing to take measurements with
the 8003. The 8003 is addressed and controlled by four groups of specific functional keys, eight softkeys
for accessing menu options, a data entry key group, and a spin knob located on the front panel.
The functional keys are arranged in groups according to the general functions they control
(see Figure 2-4 below). The Channel, Function, Source, and System key groups either allow the
immediate entry of data or call up the display of main menus from which specific, related measurement
parameters can be addressed. This is done by pressing one of the softkeys adjacent to the display screen
to display sub-menus, which will further assist you in setting up precise measurement parameters.
2.3.1 Softkey Labels & Color Indications
The softkey menu labels are shown, where applicable, in three different colors. A green label indicates
what happens if the corresponding key is pressed. A light blue label is the current, active state of the
instrument. Dark blue labels indicate any options contained in the menu which are not available in the
current state of the instrument.
2.3.2 Channel & Function Selection
The 8003 four-channel capability allows different types of measurements to be taken, processed, and
displayed. You define the desired measurement to occur on a specified channel. Having multiple
channels then allows you to define multiple measurements to occur simultaneously without regard to
which sensors the channels are using. Two or more channels can share the same sensor. This is possible
because power is all the 8003 will actually measure from the sensors.
You can change a parameter for all channels without leaving the menu. Just a single keystroke is
required to change entry channels without bringing up a channel menu. For instance, suppose the scale
factor for one channel has been entered. To enter the scale factor for another channel, just press the
appropriate channel selection key. The scale factor menu will stay on the screen and the scale factor for
the newly selected channel can now be entered.
2.3.3 Sensors & Sensor Calibration
The 8003 automatic calibration system allows its sensors to function as essentially perfect linear power
sensors. Each power sensor stores its serial number as well as frequency correction information in an
EEPROM in the sensor head. Combined, these features allow the 8003 to take absolute power
measurements and function as a CW power meter as well as a scalar network analyzer.
Figure 2-4: 8003 Front Panel Controls