HP 3562A, Service Manual

Page: 343 / 570

C I RC U I T D ESCRI PT ION S
MO D E L 3562A
6-1 28
+ 5S
+ 5 VOLTS
(A1 8 J 1 -5, A2 TP2)
Mai n five volt output from the A 18 Power Supply that goes to all the
assembl ies and the H P 1 345A d igital d isplay.
+ 8S1
+ 8 VOLTS O N E
(A1 8 J1 -7)
Voltage output from the A1 8 Power Supply that goes to the AS Digital
Fi Iter.
+ 8S2
+ 8 VOLTS TWO
(A1 8 ] 1 -8)
Voltage output from the A1 8 Power Supply that goes to the AS Digital
Filter.
±
FAN ±
FAN VOLTS
8MHz
1 0.24MHz
20.48M Hz
Power supply to the fan. The fan supply 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 lock from the A2 System CPU to the fol lowing assembl ies:
A3
Program ROM
A7 Floating Point Transform Processor
A8 G lobal RAM/Disp lay
1 0.24 M H z C LOCK
(A4 TP1 8)
(A1 TP4)
Clock form the A31 Trigger assem bly to the fol lowi ng assem bl ies:
A1
Digital Source
A4 Local Oscil lator
A30
A32
A34
er
Serial data from the A32, A34 Analog Digital Converters and sine/cosine
data from the A4 Local Osc i l l ator to the AS Digital Fi lter is
synchron ized to this clock. This signal is term i nated by A1 2 R3 and
A1 2 R4.
20.48 MHz CLOCK
(A31 TP1 0)
C lock from the A31 Trigger assembly to the A32, A34 Analog D i g ital
Converter assemb l ies.