Atec Agilent-8722ES - Manual (Page 20)

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Internal source control
Sweep limits
Set start/stop or center/span of the stimulus
parameter (frequency, power, or time) directly
through the source control keys and the control
knob, the step keys, or the data entry keyboard.
Sweep type
Set a linear or logarithmic sweep, an arbitrarily
defined frequency list, a power sweep, or a CW
(single frequency) type of sweep.
Fast swept list
Define up to 30 different subsweep frequency
ranges in any combination of CW, CW-delta F, or
start-stop sweep modes. Set test-port power levels
and IF bandwidth independently for each segment.
Measured number of points per sweep
Linear frequency: choose 3, 11, 21, 51, 101, 201,
401, 801, or 1601 points.
Source coupling
Set a coupled channel sweep (same stimulus condi-
tions on both channels) or an uncoupled channel
sweep (independent stimulus conditions).
Chop/alternate sweeps
Select whether to alternately or simultaneously
(chop) measure channels when measuring with
two-port calibration. Chop mode is faster, while
alternate mode optimizes dynamic range. The
default is chop mode.
Sweep time
Set sweep time in seconds, minutes, or hours.
Minimum sweep time is dependent on number of
data points per sweep and selected IF bandwidth.
Auto sweep time
Select auto sweep time by entering zero seconds
sweep time. The analyzer will sweep at the minimum
sweep time for any subsequently selected stimulus
conditions. Auto sweep time is the default condition.
Sweep trigger
Set to either continuous, hold, single, group sweep,
or external trigger. Set external trigger to take a
complete sweep or to measure individual points
in a frequency, power, or list sweep.
Power
Manual or auto source power range selection.
Power slope can be set in dBm/GHz.
Power meter calibration
Select continuous leveling or use a correction table
to modify source power. The correction table is
created with an initial single sweep. Make single or
multiple power meter readings at each frequency.
Data accuracy enhancement
Measurement calibration
Measurement calibration significantly reduces
measurement uncertainty due to errors caused by
system directivity, source and load match, tracking,
and crosstalk. Full two-port calibration removes all
the systematic errors to obtain the most accurate
measurements.
Calibration types available
Frequency response
Simultaneous magnitude and phase correction
of frequency response errors for either reflection
or transmission measurements.
Response and isolation
Compensates for frequency response and directivity
(reflection) or frequency response and crosstalk
(transmission) errors.
Enhanced response calibration
Corrects for frequency response and source match
for transmission measurements, and provides one-
port calibration for reflection measurements.
One-port calibration
Uses test set port 1 or port 2 to correct for direc-
tivity, frequency response, and source match errors.
Two-port calibration
Compensates for directivity, source match, reflec-
tion frequency response, load match, transmission
frequency response, and crosstalk for an S-parame-
ter test set. Crosstalk calibration can be omitted.
Available on 8719ES/20ES/22ES analyzers.
System capabilities, continued