Technical data

Chapter 4: Specification & Performance Verification
4-22 2400 Series Operation Manual, 33237 Revision A, May 2004
6. Set the UUT for the following settings:
Level: +10 dBm
AM Sensitivity: 30%
AM State: On
7. Measure and record the AM depth. The measurement should be with a 10% range of the AM sen-
sitivity setting.
8. Repeat the test for 50% and 90% sensitivity settings.
9. Set the UUT frequency and LO to the next test frequency and repeat steps 7 and 8.
4.4.3.1.4 Procedure (Amplitude Modulation Bandwidth)
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, mixer and Measuring Receiver as shown in illustration 4.3.
3. Set the Local Oscillator frequency to 50 MHz above the UUT test frequency. For the 2440 series,
set the LO frequency to 50 MHz below the 40 GHz test frequency. Activate the RF output.
Level: +10 dBm
AM Sensitivity: 30%
AM State: On
4. Set the Function Generator to 1 kHz Sine Wave, 2 V peak to peak and connect the output to the
AM IN BNC on the rear panel of the UUT.Note: Measure the output of the Function Generator
using a precision meter or oscilloscope to ensure the output of the function generator is 2 Vpp.
5. Verify that the UUT is measuring within specification at 30% on the Measuring Receiver. Press the
Ratio button and then LOG or dB. The display should read 0.00 dB.
6. Adjust the rate of the function generator and record the result. The change should be no more
than 3 dB.
7. Repeat steps 4 and 5 at the specified test frequencies.