HP 3585A Service Manual page 85

Performance Tests
Procedure:
a. Set the 3585A controls for:
b. Connect synthesizer #1 and #2 to the summer as shown in Figure 4-5 . Connect the out­
put of the summer to the 500 input of the 3585A. Set the attenuators for 0 dB of attenua­
tion . (See Figure 4-20 for the Summer Schematic . )
S P E C T R UM A N A L Y Z E R
c. Set the controls of synthesizer #1 for:
d. Set the controls of synthesizer #2 for:
e. Set the 3585A controls for :
4-2 6
INSTRUMENT PRESET
CENTER FREQUENCY . . . . . . . . . . . . . . 1 . 65 kHz
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . 350 Hz
OFFSET
. . . . . . . . . . . . .
S Y N T H E S I Z E R
( h p 3 3 3 5 )
h p 3 5 8 5 A
Figura 4·5. Intarmodulation Distortion Tast
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . 1 . 6 kHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . -25 dBm
FREQUENCY
. . . . . . . .
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . -25 dBm
SWEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . single
on
. . . . . . . . . . . . . . . . . . . . .
S Y N T H E S I Z E R
( h p 3 3 3 0 )
1 0OB/ STEP
1 . 7
. kHz
. . . . . . . . . . . . . . .
Model 3 585A
dB/STEP
I