20 Mhz If Assembly (08970-60050) - HP 8970B Service Manual

20 MHz IF Assembly (08970-60050)

The 08970-60050 assembly has been created from the 08970-60003 assembly with the
following changes.
1. C83 changes from 7.5 pF (0160-3029) to 4.7 pF (0160-3873)
2. R8 changes from 110
Figure 4-1: Schematic differences in 08970-60050
+15V (F1)
R6
1000
C21
01 uF
R7
1000
1. Differences are highlighted with a shaded background.
HP 8970B Option 020 Service Manual Supplement
(0757-0402) to 162
+15V (F1)
C23
0.01 uF
L11
22 uH
R8
C22
162
0.01 uF
C83
4.7 pF
7.3 TO
7.7 Vdc
R9
2
1780
-15V (F1)
Board Differences
20 MHz IF Assembly (08970-60050)
(0757-0405)
1
20 MHz BANDPASS FILTER
14.6 TO
15.3 Vdc
R10
51.1
L12
C26
1.5 uH
Q20 56 pF
6.5 TO
6.9 Vdc
C24
0.01 uF
C2
20
4-3