Agilent Technologies HP 70910A Betriebsanweisung PDF herunterladen (Seite 131)

Chapter 4 131

Performance Tests

5. 3 dB Bandwidth

Performance Tests

7. Enter the appropriate millimeter-wave source module frequency multiplication factor

into the synthesized sweeper by pressing

SHIFT and START FREQ. Press the following

keys (on the synthesized sweeper) for the appropriate band:

for an 11974A:

2 Hz

for an 11974Q: 3 Hz

for an 11974U: 3 Hz

for an 11974V: 4 Hz

8. Set the synthesized sweeper for a CW signal at the frequency listed below:

for an 11974A: 26.5 GHz

for an 11974Q: 33.0 GHz

for an 11974U: 40.0 GHz

for an 11974V: 50.0 GHz

9. Activate external leveling on the synthesized sweeper by pressing

XTAL.

10.Adjust the output power of the synthesized sweeper for a reading of approximately

0 dBm on the 8349B display.

11.Set the spectrum analyzer to the appropriate millimeter band by using the following

key sequence for the appropriate band:

for an 11974A:

SHIFT ⇑ ⇑

for an 11974Q: SHIFT ⇑ ⇑ ⇑

for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑

for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑

12.Set the spectrum analyzer controls as follows:

SHIFT, 5, MHz, 0, and dB (sets external mixer conversion loss to 0 dB)

FREQUENCY SPAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 MHz

ENTER dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 dB

13.Set the reference level of the spectrum analyzer by pressing

REFERENCE LEVEL and

entering the corresponding value for the band listed below:

for an 11974A:

−40 dBm

for an 11974Q:

−40 dBm

for an 11974U:

−40 dBm

for an 11974V:

−55 dBm

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