Configuring a swept rf output – Agilent Technologies E8267D PSG User Manual
Page 59
Chapter 2
45
Basic Operation
Configuring the RF Output
The AMPLITUDE area displays 10.00 dB, which is the power output by the hardware
(–20 dBm plus 10 dBm) minus the reference power (
20 dBm). The power at the RF OUTPUT
connector changes to
10 dBm.
7.
Enter a 10 dB offset: Press
Ampl Offset
>
10
>
dB
.
The AMPLITUDE area displays 20.00 dB, which is the power output by the hardware (
10 dBm)
minus the reference power (
20 dBm) plus the offset (10 dB). The OFFS indicator activates. The
power at the RF OUTPUT connector is still
10 dBm.
Setting the Optimize Signal to Noise Ratio
Enabling this softkey
On
optimizes the attenuator and ALC setting to provide optimal signal–to–noise
performance; it does not change the RF output power.
NOTE
This mode is mutually exclusive with attenuator hold (Atten Hold), and any modulation type.
A settings conflict error will be generated if attentuator hold or any modulation is activated
when optimize signal–to–noise is active (On).
1.
Press
Preset
.
Default Off
2.
Press
Amplitude
>
More
>
More > Optimize S/N Off On
.
3.
Press
Optimize S/N
to On.
Configuring a Swept RF Output
A PSG signal generator has up to three sweep types: step sweep, list sweep, and ramp sweep. Ramp
sweep is available with Option 007.
The signal generator indicates the sweep advance in a progress bar on the front panel display. If the
sweep time is greater than one second, the progress bar sweep advances according to the frequency
span of each segment. For each segment in the span, the progress bar displays the full segment and
then the sweep is taken. With sweep times less than one second, the progress bar is drawn, the
sweep taken, and the progress bar is then blanked.
NOTE
List sweep data cannot be saved within an instrument state, but can be saved to the
memory catalog. For instructions on saving list sweep data, see
During swept RF output, the FREQUENCY and AMPLITUDE areas of the signal generator’s
display are deactivated, depending on what is being swept.
Step sweep (see
) provide a linear progression through the
start–to–stop frequency and/or amplitude values, while list sweep enables you to create a list of
arbitrary frequency, amplitude, and dwell time values and sweep the RF output based on that list.
The list sweep example uses the points created in the step sweep example as the basis for a new list
sweep.
Ramp sweep (see
) is faster than step or list sweep, and is designed to work with an 8757D
Scalar Network Analyzer.