Atec Agilent-8510C - Manual (Page 16)

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Power sweep: From power domain, sweep power at
a CW frequency. When combined with the receiver
calibration feature, power sweep allows quicker and more
accurate absolute-power measurements of an amplifier’s
1 dB gain compression point.
Alternate sweep: The two channels, including markers,
may be coupled
1 (same source parameters) or uncoupled
(different source parameters).
Sweep time: Minimum sweep time is automatically
selected, depending on the number of points per sweep
(and the averaging factor if in stepped mode). Longer
sweep times may be entered by the user from 0.1 to
100 seconds.
Source power: Set source power (dBm) or power slope
(dBm/GHz). For the S-parameter test sets with built-in
attenuators, the port 1 or port 2 signal level can be con-
trolled by setting the internal attenuator of the test set.
Flat power is achievable at the test port when using the
user-flatness feature of the 8360 series synthesizers.
An E4418A power meter with the 8480 series of power
sensors are required to measure power for flatness cor-
rection.
Multiple frequency control mode: In this mode, the
8510C controls up to three frequency ranges indepen-
dently: the frequency of the primary source (83621A syn-
thesized sweeper), the frequency of a secondary source
(may be phase-locked 8350B sweep oscillator), and the
frequency of the network analyzer receiver.
Frequency control: All frequency ranges can be separately
defined as functions of the device under test frequency,
by specifying a multiplier (a ratio of integers) and an
offset for each frequency.
Definition storage: The active multiple frequency mode
parameters are stored in non-volatile memory and may be
saved on disc with the hardware configuration.
Sweep modes: All sweep modes can be used in multiple
frequency mode.
External LO phase-lock control: In applications where
an external LO is used in place of a test set, LO phase-
lock control is provided to phase-lock a sweep oscillator
with DC FM capability (for example, 8350B) to a
synthesized sweeper (for example, 83621A).
Power leveling and power control 2
Power leveling capability comes as part of the standard
8510XF systems. With power leveling, power levels at the
test ports are controlled with a typical accuracy of
±1.0 dB with a control range greater than 20 dB.
Power leveling modes: These modes are available in
both RF and LO power control.
System leveling: Power leveled at the test ports and is
entirely controlled by the 8510XF system. This is also the
normal operating mode.
Internal leveling: Power leveled at the output port of the
source.
External leveling: Leveling is achieved using an external
detector.
Leveling off: Source set to the unleveled mode.
Power leveling detections modes: These modes are
available under system leveling. Each mode will deter-
mine how the "unleveled" condition is detected.
Always: The 8510C polls for errors during every sweep.
Smart: The 8510C polls for errors during the first sweep
following a change in frequency, and thereafter only if an
error was detected during the first sweep. This is the
default mode.
Once: The 8510C polls for errors only during the first
sweep following a change in frequency.
Never: The 8510C does not poll for errors during any
sweep.
Power control: Set port power (dBm) or power slope
(dBm/GHz). With system leveling selected, the
8510XF system will control the RF source, the
millimeter-wave controller and the test heads to deliver
the user requested power to the test ports.
Vector error correction techniques
Calibration types available: Various calibration types
are available. Once calibrated, the frequency limits may be
narrowed using the FREQUENCY SUBSET feature of the
8510C.
Response/isolation calibration: Compensates for frequency
response and directivity (reflection) or frequency response
and crosstalk (transmission) of test sets. Requires a
short or open circuit and load termination (reflection) or
through connection and load termination (transmission).
One port calibration: Correction of test set port 1 or
port 2 directivity response and source match errors.
Requires three known standards, for example, open,
short, and load (fixed, sliding, or offset) terminations.
Two port calibration: Compensates for port 1 and
port 2 directivity, source match, reflection frequency
response, load match, transmission, frequency response
and crosstalk. Crosstalk (isolation) calibration can be
eliminated.
Full two-port (traditional): For use with an S-parameter
test set, requires three known standards at each port, for
example, short, open (or offset short), and load (fixed,
sliding, or offset) terminations. A through connection is
also required.
One path two-port calibration: A two-port calibration
for one port Reflection/Transmission test sets, such as the
millimeter-wave systems, provides a full two-port error-
corrected measurement when the test device is turned
around and measured in both directions.
1. In the 8510XF systems, the two channels are coupled (uncoupled channels is not available).
2.
The features or capabilities listed under Power Leveling and Power Control are only available in the 8510XF systems.