Agilent Technologies 8719D, Руководство пользователя

Страница: 286 / 673

Stimulus Functions
Figure 6-5. Stimulus Function Block
The stimulus function block keys are used to the source RF output signal to the test
device by providing control of the following parameters:
n
swept frequency ranges
n
time domain start and stop times (Option 010 Only)
n
power sweep start and stop values
n
RF power level and power ranges
n
sweep time
n
sweep trigger
n
number of data points
n
channel and test port coupling
n
CW frequency
sweep type
Defining Ranges with Stimulus Keys
The and keys are used to define the swept frequency range, time
domain range (Option or power sweep range. The range can be expressed as either
start/stop or center/span. When one of these keys is pressed, its function becomes the active
function. The is displayed in the active entry area and can be changed with the knob,
step keys, or numeric keypad. Current stimulus values for the active channel are displayed
along the bottom of the graticule.
The preset stimulus mode is frequency, and the start and stop stimulus values are set to the
following parameters:
BP 50 MHz
to 13.5
50 MHz to 20.0
BP 50 MHz to 40.0
Frequency values can be blanked for security purposes, using the display menus.
In the time domain (Option 010) or in CW time mode, the stimulus keys refer to time (with
certain exceptions).
In power sweep, the stimulus value is in