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Measurements Operation Verification
MS278XB OM 5-75
Frequency Readout Accuracy
The following test can be used to verify that the MS2781B is within its Frequency Readout Accuracy
specifications.
Test Setup
Connect the equipment as shown in the figure below:
Test Procedure
1. Set up the instruments as shown in Figure 5-49.
2. Turn on both the MS2781B Signal Analyzer and the MG369XB Signal Generator and allow them to
warm up for one hour.
3. Press the Preset key on the MS2781B to reset the instrument to factory default state.
4. Set the MS2781B to use External Reference signal.
5. Set the output level of the MG369XB to 6 dBm.
6. Set up the MS2781B as follows:
a. Reference Level: 0 dBm
b. Attenuation: 10 dB
c. VBW: Auto
d. Sweep Time Coupling: Accy
7. Set the output frequency of the MG369XB and the center frequency of MS2781B to the first freq
listed in Table 5-4.
8. Set the MS2781B to the first corresponding RBW and Span Frequency per Table 5-4.
Figure 5-49. Equipment Setup for Frequency Readout Accuracy Test