Technical data
4-7
Hardkey and Softkey Reference
Chan 2 . allows you to select channel 2 as the active channel. The active channel is indicated by an amber LED
adjacent to the corresponding channel key. All of the channel-specific functions you select, such as format or scale,
apply to the active channel. By default, Chan 2 measures S21 in log mag format.
Chan 3 . allows you to select channel 3 as the active channel. The active channel is indicated by an amber LED
adjacent to the corresponding channel key. All of the channel-specific functions you select, such as format or scale,
apply to the active channel. Chan 3 is the auxiliary channel of Chan 1.
Chan 4 . allows you to select channel 4 as the active channel. The active channel is indicated by an amber LED
adjacent to the corresponding channel key. All of the channel-specific functions you select, such as format or scale,
apply to the active channel. Chan 4 is the auxiliary channel of Chan 2.
CHAN POWER [COUPLED]. is used to apply the same power levels to Chan 1/3 & 2/4.
CHAN POWER [UNCOUPLED]. is used to apply different power levels to Chan 1/3 & 2/4.
CHANNEL POSITION. configures multiple-channel displays so that the auxiliary channels are adjacent to or beneath the
primary channels.
CHOP A and B. measures A and B inputs simultaneously for faster measurements.
CLEAR BIT. when the parallel port is configured for GPIO, 8 output bits can be controlled with this key. When this key is
pressed, “TTL OUT BIT NUMBER” becomes the active function. This active function must be entered through the
keypad number keys, followed by the x1 key. The bit is cleared when the x1 key is pressed. Entering numbers larger
than 7 will result in bit 7 being cleared, and entering numbers lower than 0 will result in bit 0 being cleared.
CLEAR LIST. deletes all segments or bands in the list.
CLEAR SEQUENCE. clears a sequence from memory. The titles of cleared sequences will remain in load, store, and purge
menus. This is done as a convenience for those who often reuse the same titles.
COAX. defines the standard (and the offset) as coaxial. This causes the analyzer to assume linear phase response in
any offsets.
COAXIAL DELAY. applies a linear phase compensation to the trace for use with electrical delay. That is, the effect is the
same as if a corresponding length of perfect vacuum dielectric coaxial transmission line was added to the reference
signal path.
COEFFIC’T MODEL MENU. leads to menus used to enter coefficients for a polynomial equation model. The coefficient
model menus make it possible to enter coeffiecients for a polynomial equation of the fourth order, describing response
versus frequency.
COLOR. adjusts the degree of whiteness of the color being modified. Refer to the user’s guide for an explanation of
using this softkey for color modification of display attributes.
CONFIGURE EXT DISK. provides access to the configure ext disk menu. This menu contains softkeys used to the disk
address, unit number, and volume number.
CONFIGURE MENU. provides access to the configure menu. This menu contains softkeys to control raw offsets, spur
avoidance, the test set transfer switch, and user preset settings.
CONTINUE SEQUENCE. resumes a paused sequence.
CONTINUOUS. located under the Menu key, is the standard sweep mode of the analyzer, in which the sweep is
triggered automatically and continuously and the trace is updated with each sweep.
CONVERSION [ ]. brings up the conversion menu which converts the measured data to impedance (Z) or admittance
(Y). When a conversion parameter has been defined, it is shown in brackets under the softkey label. If no conversion
has been defined, the softkey label reads CONVERSION [OFF].
Copy. provides access to the menus used for controlling external plotters and printers and defining the plot
parameters.
CORRECTION on OFF. turns error correction on or off. The analyzer uses the most recent calibration data for the
displayed parameter. If the stimulus state has been changed since calibration, the original state is recalled, and the
message "SOURCE PARAMETERS CHANGED" is displayed.
COUNTER: ANALOG BUS. switches the counter to count the analog bus.
COUNTER: DIV FRAC N. switches the counter to count the A14 fractional-N VCO frequency after it has been divided
down to 100 kHz for phase-locking the VCO.
COUNTER: FRAC N. switches the counter to count the A14 fractional-N VCO frequency at the node shown on the overall