Technical data

4-12
Hardkey and Softkey Reference
FORMAT INT DISK. initializes media in internal drive, and formats the disk using the selected (DOS or LIF) format.
FORMAT INT MEMORY. clears all internal save registers and associated cal data and memory traces.
FORWARD: OPENS. provides access to the menu for selecting an open calibration type when the cal kit defines more
than one open standard.
FRESNEL. in the Optical Kit, Modify Standards menu, this key is used to modify the Fresnel reflection model
coefficient.
in the optical reflection and transmission Response Calibration menus, this key is used to measure a Fresnel reference
standard (14.5 dB return loss, or 3.5% reflection).
FREQUENCY. specifies the frequency of a calibration factor or loss value in the power meter cal loss/sensor lists.
FREQUENCY BAND. selects an existing frequency band to be reviewed, edited, or deleted. The maximum number of
frequency bands is 12 (numbered 1 to 12).
FREQUENCY BLANK. blanks the displayed frequency notation for security purposes. Frequency labels cannot be
restored except by instrument preset or turning the power off and then on.
FULL 2-PORT. provides access to the series of menus used to perform a complete calibration for measurement of all four
S-parameters of a two-port device. This is the most accurate calibration for measurements of two-port devices.
FULL PAGE. draws a full-size plot according to the scale defined with SCALE PLOT in the define plot menu.
FWD ISOL'N. measures the forward isolation of the calibration standard.
FWD MATCH (Label Class). lets you enter a label for the forward match class. The label appears during a calibration
that uses this class.
FWD MATCH (Specify Class). specifies which standards are in the forward match class in the calibration kit.
FWD MATCH THRU. measures the forward match using a thru standard.
FWD TRANS (Label Class) lets you enter a label for the forward transmission class. The label appears during a
calibration that uses this class.
FWD TRANS (Specify Class) specifies which standards are in the forward transmission class in the calibration kit.
FWD TRANS THRU. measures the forward transmission frequency response in a two-port calibration.
G+jB MKR. displays the complex admittance values of the active marker in rectangular form. The active marker values
are displayed in terms of conductance (in Siemens), susceptance, and equivalent capacitance or inductance. Siemens
are the international units of admittance, and are equivalent to mhos (the inverse of Ωs). The Smith chart graticule is
changed to admittance form.
G/n. giga/nano (10
9
/ 10
−9
). Used to terminate numeric entries.
GET SEQ TITLES. copies the sequence titles currently in memory into the six softkey positions.
GOSUB SEQUENCE. calls sub-routines in sequencing.
GPIB DIAG on off. toggles the GPIB diagnostic feature (debug mode). This mode should only be used the first time a
program is written: if a program has already been debugged, it is unnecessary. When diagnostics are on, the analyzer
scrolls a history of incoming GPIB commands across the display in the title line. Nonprintable characters are
represented as pi. If a syntax error is received, the commands halt and a pointer wedge indicates the misunderstood
character. For information on clearing a syntax error, refer to the programmer's guide.
GRAPH FMT [ ]. sets the format of the graphic file when FILETYPE: GRAPHIC is selected. The only graphic selection
currently available is the JPEG format.
GRAPHICS on OFF. specifies whether or not to store display graphics on disk with the instrument state.
GRATICULE [ ]. brings up the graticule print color definition menu. The graticule default print color is cyan.
GRATICULE. selects the display graticule for color modification.
HELP ADAPT REMOVAL. provides an on-line quick reference guide to using the adapter removal technique.
HOLD. freezes the data trace on the display, and the analyzer stops sweeping and taking data. The notation “Hld” is
displayed at the left of the graticule. If the * indicator is on at the left side of the display, trigger a new sweep with
SINGLE.
IF BW [ ]. is used to select the bandwidth value for IF bandwidth reduction. Allowed values (in Hz) are 6000, 3700,
3000, 1000, 300, 100, 30, and 10. Any other value will default to the closest allowed value. A narrow bandwidth slows