Product specifications

16
Autoselect Pulse Detection Method
If selected, wideband detection method is used for pulse widths of 267 ns or
wider for point-in-pulse measurements, and 1.6 us or wider pulse width for
pulse profile measurements. Otherwise, narrowband detection method is used.
Autoselect IF Path Gain and Loss
Autoselect is used in most cases, but it may need to be adjusted for high-
power configurations with user-supplied high-power couplers and attenuators
instead of internal test port couplers. De-select to adjust the IF settings for
non-standard setups. Refer to PNA Help for more details.
Optimize Pulse Frequency
If selected, it adjusts the pulse frequency to maximize the spectral nulling
effect when using the narrowband detection method. It is ignored for the
wideband detection method.
Autoselect Profile Sweep Time
If selected, the time span in pulse profile measurements is set to double of
the pulse width, and a delay of half of the pulse width is added to the pulse
generator that drives the modulators. In the case of 10 us pulse width, the
hardware sets 20 us span and 5 us delay of the pulse generator, and displays
the pulse in the middle of the screen. If de-selected, it sets the time span
based on the current number of measurement points and IF bandwidth. The
start and stop time can be adjusted in the Sweep, Time menu.
IFBW
In wideband detection, the IF bandwidth is set automatically based on
the specified pulse width in order to make the data acquisition window
(approximately 1/IFBW) narrower than the pulse width. In narrowband
detection, it is also set automatically, but with a custom IF filter for spectral
nulling. The display shows the closest standard IF bandwidth.
Mater Pulse Trigger
It is used to define the trigger source between internal or external
(incoming pulse on PULSE SYNC IN).
Autoselect Width & Delay
If selected, the data acquisition or receiver gate widths and delays are set
to acquire data within the pulses. They are adjusted to display the pulse
in the middle of the screen in pulse profile. They can be customized in the
Measurement Timing table or in the Pulse Generators Setup dialog box.
Autoselect Pulse Generators
If selected, PNA firmware assigns Pulse1 to modulators in wideband and
narrowband mode, and Pulse2 to all receiver gates in narrowband mode. If
de-selected, any internal pulse generator and “external ” (Pulse Sync In) can
be selected in the Measurement Timing table. The pulse generators must be
enabled in the Pulse Generators Setup dialog box (Figure 10) to be activated.