Technical data

4-21
Hardkey and Softkey Reference
PLTR PORT SERIAL. configures the analyzer for a plotter that has a serial (RS-232) interface.
PLTR TYPE [PLOTTER]. selects a pen plotter such as the HP 7440A, HP 7470A, HP 7475A, or HP 7550B as the plotter
type.
PLTR TYPE [HPGL PRT]. selects a PCL5 compatible printer, which supports HP-GL/2, such as the LaserJet III or LaserJet
4 for a monochrome plotter type, or the DeskJet 1200C for a color plotter type.
POLAR. displays a polar format. Each point on the polar format corresponds to a particular value of both magnitude
and phase. Quantities are read vectorally: the magnitude at any point is determined by its displacement from the
center (which has zero value), and the phase by the angle counterclockwise from the positive x-axis. Magnitude is
scaled in a linear fashion, with the value of the outer circle usually set to a ratio value of 1. Since there is no frequency
axis, frequency information is read from the markers.
POLAR MKR MENU. leads to a menu of special markers for use with a polar format.
PORT EXTENSIONS. goes to the reference plane menu, which is used to extend the apparent location of the
measurement reference plane or input.
PORT POWER [COUPLED]. is used to set the same power levels at each port.
PORT POWER [UNCOUPLED]. allows you to set different power levels at each port.
Power. makes power level the active function and sets the RF output power level of the analyzer's internal source. The
analyzer will detect an input power overload at any of the three receiver inputs. This is indicated with the message
“OVERLOAD ON INPUT (R, A, B).” If power meter cal is on, cal power is the active entry.
POWER RANGES. leads to the power ranges menu which allows the user to select among 12 power ranges from −75 to
−5 dBm.
POWER LOSS. brings up the segment modify menu and segment edit (power loss) menu explained in the following
pages. This softkey is intended for use when the power output is being sampled by a directional coupler or power
splitter. In the case of the directional coupler, enter the power loss caused by the coupled arm. This feature may be
used to compensate for attenuation non-linearities in either a directional coupler or a power splitter. Up to 12 segments
may be entered, each with a different frequency and power loss value.
POWER MTR. toggles between 436A or 438A/437. These power meters are GPIB compatible with the analyzer. The
model number in the softkey label must match the power meter to be used.
POWER SWEEP. turns on a power sweep mode that is used to characterize power-sensitive circuits. In this mode, power
is swept at a single frequency, from a start power value to a stop power value, selected using the Start and Stop keys
and the entry block. This feature is convenient for such measurements as gain compression or AGC (automatic gain
control) slope. To set the frequency of the power sweep, use CW FREQ in the stimulus menu. Note that power range
switching is not allowed in power sweep mode.
In power sweep, the entered sweep time may be automatically changed if it is less than the minimum required for the
current configuration (number of points, IF bandwidth, averaging, etc.).
Preset. presents a menu to select a factory or user defined preset state.
PRESET: FACTORY. is used to select the preset conditions defined by the factory.
PRESET: USER. is used to select a preset condition defined by the user. This is done by saving a state in a register under
Save/Recall and naming the register UPRESET. When PRESET: USER is underlined, the Preset key will bring up the
state of the UPRESET register.
PRESET SETTINGS. selects a menu to set the preset states of some items, such as calibration interpolation and step
sweep mode.
PREVIOUS PAGE. steps backward through a tabular list of data page-by-page.
PREVIOUS RANGES. steps back to the previous range menus.
PRINT ALL COLOR. when displaying list values, prints the entire list in color. When displaying operating parameters,
prints all but the last page in color. The data is sent to the printer as ASCII text rather than as raster graphics, which
causes the printout to be faster.
PRINT ALL MONOCHROME. when displaying list values or operating parameters, prints the entire list in monochrome.
The data is sent to the printer as ASCII text rather than as raster graphics, which causes the printout to be faster.
PRINT: COLOR. sets the print command to default to a color printer. The printer output is always in the analyzer default
color values. This command does not work with a black and white printer.