Technical data

Performance Verification
2400 Series Operation Manual, 33237 Revision A, May 2004 4-19
3. Set the UUT to the test frequency and record the measured output power. Repeat the test for the
remaining test frequencies.
4. Set the output level of the UUT to +12 dBm. For 2440 series, this output level does not apply for
frequencies greater than 8 GHz.
5. Set the UUT to the test frequency and record the measured output power. Repeat the test for the
remaining test frequencies.
NOTE: When measuring the accuracy of the model 2400, consideration must be given to the mea-
surement uncertainties of the test system. These include, but not limited to, VSWR, Cal Factor Uncer-
tainty, and Calibration Uncertainty.
4.4.2.4.3 Step Attenuator Level Accuracy (Units with Option 26 installed
only)
1. For test frequencies below the measuring receiver frequency range, connect the UUT directly to
the Measuring Receiver and proceed to step 4.
2. For test frequencies, greater than Measuring Receiver frequency range, connect the Local Oscilla-
tor, UUT and Measuring Receiver as shown in illustration 4.4.
3. Set the Local Oscillator frequency to 21.4 MHz above the UUT test frequency. For the 2440 series,
set the LO frequency to 21.4 MHz below the 40 GHz test frequency.
4. Set the UUT output level to -20 dBm.
5. Activate the RF level measurement of the Measuring Receiver and set the Ratio measurement to
dB.
6. Reduce the RF output of the UUT in 10 dB increments and observe the measurement of the
receiver.
7. Record the worst case level accuracy and level setting for the test frequency.
8. Repeat the test for the remaining test frequencies.