PERFORMANCETESTS

MODEL 8559A

PERFORMANCE TESTS

4-15.RESOLUTION BANDWIDTH ACCURACY(Cont'd)

5.Tune signal generator frequency until trace drops to 5 divisions above graticule baseline. Record signal generator frequency.

MHz

6.Tune signal generator frequency in direction opposite to that of step 5 until trace peaks (7.1 divisions above graticule baseline) and then drops to 5 divisions above graticule baseline. Record signal generator fre- quency.

MHz

NOTE

The bandwidths recorded in this performance test are required for calculations in 4-16 Resolution Bandwidth Selectivityperformancetest.

7.Calculate and record resolution bandwidth at 3-dB points (difference between frequencies recorded in steps 5 and 6).

Min. ActualMax.

2.0

 

3.90 MHz

8.Select ALT IF (switch pushed in), leaving FREQ SPAWDIV set to 0. Set signal generator to 35 MHz and repeat steps 3 through 7.

Min. ActualMax.

3.90 MHz

9.Return ALT IF switch to OFF position. Set RESOLUTION BW to 1 MHz, leaving FREQ SPAN/DIV set to 0. Set signal generator to 35 MHz and repeat steps 3 through 7.

Min. ActualMax.

850

 

1150 kHz

10.Set RESOLUTION BW to 300 kHz, leaving FREQ SPAN/DIV set to 0. Set signal generator to 35 MHz and repeat steps 3 through 7.

Min. ActualMax.

345 kHz

11.Set RESOLUTION BW to 100 kHz, leaving FREQ SPAN/DIV set to 0. Set signal generator to 35 MHz and repeat steps 3 through 7.

Min. ActualMax.

115kHz