HP 8559A - 8-151

MODEL 8559A
SERVICE
A12 STEP GAIN
0 - 12 dB CONTROL
REF LEVEL WP
\
1
REF LEVEL CY
2ND
10 dB
20
dB 20 dB
AMPLIFIER
AMPLIFIER AMPLIFIER
I 21.4
MHz
( IF61
IF62 I
St1 FLATNESS
BAND
MIXER DIODE BIAS
.Ol-s
6-g
r
H2 BAND
SELECT ::is DIODE BIAS
DECODER
,' -
12.1 - 21
/
9 0 0 9
FIGURE 858. STEP GAIN ASSEMBLY AIL, BLOCK DIAGRAM