Anritsu Series MS278XB operation manual Input-related Spurious Response

Measurements Operation Verification

Input-related Spurious Response

The following test can be used to verify that the MS2781B meets the Input-related Spurious Response specifications.

Test Setup

Connect the equipment as shown in the figure below:

Figure 5-59.Equipment Setup for Input-related Spurious Response Test

Test Procedure

1.Turn on both the MS2781B Signal Analyzer and the HP 8665B Signal Generator and allow them to warm up for one hour.

2.Press the Preset key on the MS2781B to reset the instrument to factory default state.

3.Ensure that the MS2781B is set to use an External Reference.

4.Set up the MS2781B as follows:

a.Frequency Span: 610 kHz

b.RBW: 100 Hz

c.VBW: Auto

d.Reference Level: –10 dBm

e.Attenuation: 0 dB

f.Detector Mode: Maximum

g.Active Marker 1: On

5.Set the frequency of the 8665B to the first source frequency setting listed in Table 5-14.

6.Set the Center Frequency of the MS2781B to the corresponding center frequency setting listed in Table 5-14.

7.Adjust the output power of the 8665B so that the MS2781B marker to peak reads close to –10 dBm.

8.Record the maximum Spurious amplitudes in Table 5-14 in the appropriate column.

9.Change the Frequency Span to 3 MHz and repeat steps 5 through 8.

MS278XB OM 5-95