HP 3562A Service Manual page 343

C I RC U I T D E SCRI PT ION S
+ 5 S
+ 8 S1
+ 8 S2
±
FAN
8 M H z
1 0.24MHz
20.48M Hz
6-1 28
+ 5 VOLTS
(A1 8 J 1 -5, A2 TP2)
Mai n five volt output from the A 18 Power S u p p l y that goes to all the
assem b l ies and the H P 1 345A d ig ital d is p l ay.
+ 8 VOLTS O N E
(A1 8 J1 -7)
Voltage output from the A1 8 Power Supply that goes to the AS D i gital
Fi Iter.
+ 8 VOLTS TWO
(A1 8 ] 1 -8)
Voltage output from the A1 8 Power Sup ply that goes to the AS Digital
F i lter.
± FAN VOLTS
Power s u pply to the fan. The fan s u p p ly is derived . from the + 8 V
output and the - 1 5 V output:
=
( + 8) + ( - 1 5) 23 Vdc
8 MHz C LOCK
(A2 TP5)
C l ock from the A2 System CPU to the fo l l owi n g assem b l ies:
A3 P rogram ROM
A7 Floati ng Point Transform Processor
A8 G lobal RAM/D isp l ay
1 0.24 M H z C LOCK
(A4 TP1 8)
(A1 TP4)
C l ock form the A31 Trigger assem bly to the fo l lowi ng assem bl ies:
A1 D i g ita l Source
A4 Local Osc i l lato r
A30
A32
A34
Serial data from the A32, A34 Analog Digital Converters and s ine/cosine
data from the A4 Local Osc i l l ator to the AS D igital Fi lter is
syn c h ron ized to this c l ock. This signal is te rm i nated by A1 2 R3 and
A1 2 R4.
20.48 M H z CLOCK
(A31 T P1 0)
C lock from the A31 Trigger assembly to the A32, A34 Ana log D i g ital
Co nverter assem b l ies.
er
MO D E L 3562A