SFRA45 User Manual
8-3
8.2
Sweep Mode / Key (SWEEP)
All ac measurements using the SFRA45 generator can be
swept across a frequency range. The start frequency, stop
frequency and number of steps up to 2000 can be
specified. The measurements are subjected to the same
speed constraints set in the ACQU menu, but the filtering
does not apply on each measurement point. If continuous
sweep is selected, then the filtering is applied to each
successive sweep.
Display –
Has three options: “
real time”
, “
table”
and
“
graph”
. Sweeping a band of frequencies stores each step
into a table. After the sweep is completed this information
may then be displayed as either a table or a graph
depending on the option selected. Selecting “real time”
returns the display back to normal operation.
This information may be saved via the ‘PROG’ key either
internally, on a memory stick, or directly to a PC.
Sweep Start, Sweep End and Sweep Steps –
The
“
sweep start
” and “
sweep end
” sets the two frequencies
over which the band will cover.
The “
sweep steps
” sets the number of steps taken to
cover the frequency band, at each step a reading is taken
and is set depending on the accuracy and resolution
required. This can be a maximum of 2000, however, the
more steps entered the more memory is required.
Sweep Type –
Is displayed twice on the function menu as
there are two different options for each function. These
options are ‘
linear/ logarithmic
’ and ‘
single/continuous
’,
these are set depending on the type of sweep required.
The ‘continuous’ option repeats the sweep until the
‘HOME/ESC’ key is pressed which stops the sweep.
