HP 8590 E-Series User Manual page 266

recalls an amplitude-correction factors table from the current mass-storage
RECALL
device (spectrum analyzer memory or memory card). To verify the current
AMP COR
mass storage device, press RECALL AMP COR . If MAX REG # appears on the
spectrum analyzer display, the current mass storage device is spectrum
analyzer memory. If PREFIX= is displayed, the memory card is the mass storage
device. Press ISAVE) or (jj], then INTERNAL CARD to change the current
mass storage device. To recall an amplitude-correction factors table, enter the
register number that the table was previously saved under, then press CENTER].
When recalling an amplitude-correction factors table from the memory card,
it may be necessary to change the current prefix to the prefix with which the
table was stored. Press Change Prefix to change the current prefix. When
saved in spectrum analyzer memory, the register number is restricted to the
range between 0 and the number x indicated by MAX REG# = x. The screen title
is not recalled with the amplitude-correction factors table.
Front-Panel Key Access: a
recalls limit-line tables from the current mass-storage device (spectrum
RECALL
analyzer memory or memory card). To verify the current mass-storage device,
LIMIT
press RECALL LIMIT . If MAX REG # appears on the spectrum analyzer display,
the current mass-storage device is spectrum analyzer memory. If PREFIX= is
displayed, the memory card is the mass-storage device. Press (SAVE) or (jRECALLj,
then INTERNAL CARD to change the current mass-storage device. To recall a
limit line, enter the register number that the limit-line tables was saved under,
then press Cm]. When recalling a limit line from the memory card, it may
be necessary to change the current prefix to the prefix with which the limit
line was stored. Press Change Prefix to change the current prefix. When
saved in spectrum analyzer memory, the register number is restricted to the
range between 0 and the number x indicated by MAX REG# = x. The screen title
is not recalled with the limit-line tables.
Front-Panel Key Access: (-1
allows the reference level to be changed. This function is activated when
REF LVL
represented by the top graticule line on the screen. Changing the value of
the reference level changes the absolute amplitude level (in dBm) of the top
graticule line. Pressing any digit, 0 through 9, on the numeric keypad brings
up the selected terminator menu.
Front-Panel Key Access: (-1
adds an offset value to the displayed reference level. Offsets are entered by
REF LVL
using the number/units keypad. Entering an offset does not affect the trace
OFFSET
or the attenuation value. Reference-level offsets are used when gain or loss
occurs between a device under test and the spectrum-analyzer input. Thus,
the signal level measured by the spectrum analyzer is the level at the input of
an external amplitude-conversion device. When an amplitude offset is entered,
its value is displayed on the left side of the screen (as opposed to frequency
offsets which are displayed at the bottom of the screen). To eliminate an
offset, press REF LVL OFFSET , 0 [-dBm] or (+dBm). Pressing C-1 also
sets the offset to zero. Reference-level offsets are entered using the numeric
keypad. See also the EXTERNAL PREAMPG softkey description.
Front-Panel Key Access: C-1
is pressed. The reference level is the amplitude power or voltage
Key Descriptions 7-73