PERFORMANCETESTSMODEL8559A

PERFORMANCE TESTS

 

4-17.AVERAGE NOISE LEVEL (Cont'd)

 

PROCEDURE:

 

1. Set spectrum analyzer controls as follows:

 

FREQUENCYBANDGHz ..................................................

.01-3

TUNING ..............................................................

0.010GHz

FREQSPAN/DIV ...............................................................

F

RESOLUTION BW ...............................................

3 MHz, uncoupled

INPUTATTEN ..............................................................

OdB

REFERENCE LEVEL ....................................................

-60 dBm

REF LEVEL FINE ..............................................................

0

Amplitudescale ........................................................

10dB/DIV

SWEEPTIME/DIV ........................................................

AUTO

SWEEPTRIGGER .....................................................

FREERUN

ALTIF .....................................................................

OFF

SIG IDENT .................................................................

OFF

BL CLIP ....................................................................

OFF

VIDEO FILTER ..............................................

Full CW (not in detent)

2.With FREQ SPAN/DIV set to F, set VIDEO FILTER fully clockwise, but not in detent. Adjust TUNING to position marker at frequency where displayed average noise level is highest.

NOTE

Do not tune marker beyond specified band edge.

Set VIDEO FILTER to detent and FREQ SPAN/DIV to 0.

Set RESOLUTION BW to 1 kHz.

Measure average noise level displayed on CRT (see Figure 4-13) and record results in Table 4-5.

Set FREQUENCY BAND GHz to 6 - 9 and repeat steps 2 through 5.

Set FREQUENCY BAND GHz to 3- 9 and repeat steps 2 through 5.

Set FREQUENCY BAND GHz to 9 - 15 and repeat steps 2 through 5.

Set FREQUENCY BAND GHz to 6- 15 and repeat steps 2 through 5.

Set FREQUENCY BAND GHz to 12.1 -21 and repeat steps 2 through 5 for the frequency range of 12.1 - 18.0 GHz.