User`s guide

Chapter 4 211
Calibration
Power Calibration
4. Calibration
Setting power sensor calibration factor table
NOTE Before using the power sensor calibration factor table of the E5070B/E5071B, set the
calibration factor to 100% and then calibrate the power sensor.
When you use the 437B or 438A as the power meter, you need to set the power sensor
calibration factor table with the E5070B/E5071B.
If you use a power meter other than the 437B or 438A, refer to the following table.
NOTE If you use the E4418A, E4419A, EPM-441A, or EPM-442A with firmware version
Ax.02.00 or earlier and you set the calibration factor table with the E5070B/E5071B,
calibration is executed by both the power meter and the E5070B/E5071B due to this
firmware version, and thus you cannot obtain correct measurement results. Therefore,
never set the calibration factor table under this condition with the E5070B/E5071B.
Use the following procedure to set the power sensor’s calibration factor table:
Step 1. Press .
Step 2. Press
Power Calibration.
Step 3. Press
Sensor A Settings (for power sensor connected to channel A) or Sensor B Settings
(for power sensor connected to channel B).
Step 4. Press
Ref Cal Factor.
Step 5. Enter the reference calibration factor (the calibration factor at 50 MHz).
Step 6. According to the calibration factor data attached to the power sensor, set the frequency
(
Frequency) and the coefficient (Factor) of the calibration factor table by using the
following hardkeys and softkeys.
NOTE Pressing - OK does not affect the current setting of the reference calibration factor
and the calibration factor table.
NOTE For a frequency other than one set in the table, a value obtained by linear interpolation of
the calibration factors at the 2 points adjacent to the frequency is used. If a frequency is
lower than the lowest frequency in the table, the calibration factor at the lowest frequency
is used; if larger than the highest frequency in the table, the calibration factor at the highest
Power sensor Setting of calibration factor table
8482A Set the calibration factor table with the E5070B/E5071B only when you do
not set the calibration factor table with the power meter.
If you set the calibration factor table with both the power meter and the
E5070B/E5071B, calibration is executed by both of them and you cannot
obtain correct measurement results.
E4412A
ECP-E18A
You do not need to set the calibration factor table with the E5070B/E5071B.
Even if you set the calibration factor table with the E5070B/E5071B, this
setting would be ignored.