6-38
Calibrating for Increased Measurement Accuracy
Power Meter Measurement Calibration
Using Continuous Correction Mode You can set the analyzer to update the correction table at each sweep (as in a leveling
application), using the continuous sample mode. When the analyzer is in this mode, it
continuously checks power at every point in each sweep. You must keep the power meter
connected as shown in Figure 6-11. This mode is also known as power meter leveling, and
the speed is limited by the power meter.
NOTE You may level at the input of a device under test, using a 2-resistor power
splitter or a directional coupler before the device; or level at the output of the
device using a 3-resistor power splitter or a bidirectional coupler after the
device.
Figure 6-11 Continuous Correction Mode for Power Meter Calibr ation
1. Connect a power splitter or directional coupler to the port supplying RF power to your
test device, as shown in Figure 6-11.
2. S e t test po rt po w e r t o appro x im ate desired leveled power.
3. Press and enter the test port power level that you want the
analyzer to maintain at the input to your test device. Compensate for the power loss of
the power splitter or directional coupler in the setup.
4. If you want the analyzer to make more than one power measurement at each frequency
data point, press (where n = the number of desired
iterations).
If you increase the number of readings, the power meter correction time will
substantially increase.
5. Press to activate the
power meter correction.
Cal
PWRMTR CAL
NUMBER OF READINGS
nx1
Cal
PWRMTR CAL
EACH SWEEP
TAKE CAL SWEEP