Filter
Top Products
A21-1
BNC / AUX
I/0 CONNECTOR
PCB
AM IN
EXT ALC IN
DWELL IN
AM OUT
V/GHz OUT
FM OUT
SEQ SYNC OUT
SERIAL
I/O
10 MHz REF IN
From RF Deck
(Option 9)
From A3
Reference Loop
To A3
Reference Loop
RF OUTPUT
Outputs
Inputs Power Input
110/220 VAC
Line
Filter
P/O Rear
Casting Assy
A21
Rear
Panel PCB
Bridge
Rectifier/
Doubler
A19
Line
Conditioner
+165V
-165V
A18
Power
Supply
A15
Regulator
Control
+24V
(From A2 PCB)
+24V
(To A2 PCB)
A16
CPU
Interface
A17
CPU
(Continued on Sheet 2)
IEEE-488 GPIB
AUX
I/O
LCD
LCD
Control
Keyboard
Encoder
Line
Switch
Logic
Optical
Encoder
A2
Front Panel
Control
A1
Front
Panel
AM IN
FM IN
IN
EXT ALC IN
To A10 ALC PCB
(Via A20 Motherboard)
To A11 FM PCB
To A6 Pulse
Generator PCB
To A10 ALC PCB
(Via A20 Motherboard)
From RF Deck
Rear Panel Signals
Serial I/O
+24V
(To A18
PCB)
+24V
(From
A15 PCB)
Fuse
+5V
+9V
+15V
-15V
+24V
-18V
-43V
Keyboard
Matrix
Line
Switch
Rotary
Data
Knob
Connectors
RF OUTPUT
10 MHZ REF OUT
A
C
D
Power Supply
Digital
Control
Front Panel
Rear Panel
GPIB Bus
Data and Address Bus
Phase A / Phase B Data
Coaxial Cables
FM IN
To A11 FM PCB
PULSE TRIGGER IN HORIZ OUT
PULSE VIDEO OUT
PULSE SYNC OUT
400KHz
(From A6)
B
Rear Panel Pulse Signals
E
FUNCTIONAL 682XXB/683XXB
DESCRIPTION MAJOR SUBSYSTEMS
2-6 682XXB/683XXB MM
Figure 2-1. Block Diagram of a Typical 682XXB/683XXB
Synthesized Signal Generator (Sheet 1 of 2)