HP 8559A Operation And Service Manual page 155

ADJUSTMENTS
MODEL 8559A
ADJUSTMENTS
5-26. SECOND CONVERTER ADJUSTMENTS (Cont'd)
THESE POINTS SHOULD BE A T
THESE POINTS SHOULD BE A T
SAME AMPLITUDE WITH BANDPASS
SAME AMPLITUDE LEVEL dB
.
>17 MHz WIDE 1 dB DOWN AS SHOWN
REGULAR
ALTERNATE
I F I F
-3.75 DIV
b. COMPOSITE PHOTO SHOWING LOCATION
a. TYPICAL BANDPASS RESPONSE
OF I F SIGNALS
d. ROLL-OFF A T LOW-END OF RESPONSE
ROLL-OFF A T HIGH-END OF RESPONSE
C .
FIGURE 5-13. FIRST IF BANDPASS FILTER RESPONSE