Anritsu Series MS278XB operation manual Frequency Response Test

Operation Verification Measurements

9.Adjust the MG369XB RF output so that the power meter input B reading is –10 dBm. Record the corresponding power meter input A reading in Table 5-10.

Note: Set the Cal Factor on the power meter to match the frequency being measured.

10.Repeat steps 7 and 8 for the other frequencies listed in Table 5-10.

11.Disconnect the Phase Matched N-male to N-female adapter from the 10 dB attenuator, and then connect a N-male to N-male Phase Matched adapter between the 10 dB pad and the MS2781B RF input.

12.Set up the MS2781B as follows:

a.Center Frequency: 50 MHz

b.Span: 300 kHz

c.RBW:50 kHz

d.VBW: 500 Hz

e.Sweep Time: 100 ms

f.Attenuation: 10 dB

g.Reference Level: 0 dBm

13.Set the frequency on the MG369XB to 50 MHz, then set the output power level so that the sensor A reading matches the corresponding value as recorded in column 2 of Table 5-10.

14.Set the Marker to Peak. Record the measured Marker value in Table 5-10.

15.Repeat steps 11 and 12. Record the measured results in Table 5-10. Verify that the measured results are within specifications.

Table 5-10.Frequency Response Test

	Sensor A Power Reading for		Specifications
Frequency	–10 dBm Output at Adapter	MS2781B Marker Reading	–10 dBm
50 MHz			±0.4 dB
500 MHz			±0.4 dB
1000 MHz			±0.4 dB
1500 MHz			±0.4 dB
2000 MHz			±0.4 dB
3000 MHz			±0.4 dB
4000 MHz			±0.4 dB
5000 MHz			±0.4 dB
6000 MHz			±0.4 dB
7000 MHz			±0.4 dB
7800 MHz			±0.4 dB

5-88 MS278XB OM