Table Of Contents - Orban 275A Operating Manual

Table of
Contents
SECTION
1:
SYSTEM DESCRIPTION
AND
APPLICATION
1-1
Performance
Highlights
1-2 Fig. 1-1:
Conceptual Block
Diagram
1-3
Product Overview
SECTION
2:
INSTALLATION
2-1
Overview
of Installation
Procedure
2-2 Fig. 2-1:
Rear Panel
2-3
Remote
Control Panel
273A/RC
2-3 Fig. 2-2: Chassis Configuration
for
Remote
Control
2-4
Power-up Jumpers
2-4
Fig. 2-3:
Powerup Jumpers
2-5
AC
Power
2-5 Fig. 2-4:
AC
Line Color
Code
2-5
Mounting
Rack Requirements
2-6 Audio
Connections, Operating Level
2-7
Recognition Switch
2-7
Initial
Program Tests
2-7 External
Automation
2-8 Fig. 2-5:
Control Interface Inputs
2-8 Fig. 2-6:
Loopthrough
Diagram
2-
9 Registration
Card
SECTION
3:
OPERATING INSTRUCTIONS
Fig. 3-1:
Front-panel Controls
3-
1
Summary
3-2 General Operating Instructions
3-4 Further
Discussion of
Functions
SECTION
4:
MAINTENANCE
4-1
Introduction
4-1 Preventive
Maintenance
4-1
Corrective
Maintenance
4-1 Service
Access
4-2
Component Replacement
4-2 Replacement
Parts
4-2 Replacement
of
PCB
Components
4-4 Troubleshooting IC
Opamps
4-4 Factory Service
4-
5
Shipping Instructions
SECTION
5:
ALIGNMENT
AND
PERFORMANCE
EVALUATION
5-
1
General
5-1
Power
Supply
5-1
Signal
Processing Circuitry
5-2
Audio Path Alignment and Verification
5-4 Fig. 5-1:
Noise Reduction Response
5-4
Fig. 5-2:
Noise Reduction Response,
lOdB Below Expansion Threshold
5-4
Fig. 5-3:
Frequency Response
in
Synthesize
Mode
5-4
Fig. 5-4:
Synthesizer Response,
Narrow
Mode
5-4 Fig. 5-5:
Synthesizer Response,
Wide
Mode
5-5 Control Circuit
Bandpass Filter
Performance Verification
5-5
Fig. 5-6: Control Circuit
Bandpass Filter
Response
5-5 Automatic
Recognition Circuit Tests
5-6
275A/RC Interface Tests
5-7
User Control Interface
Logic Tests