CRL Systems Amigo User Manual

Background on the development and market position of the Amigo audio processor.

Core description of the Amigo as a powerful FM audio processor and stereo encoder.

Definitions of danger, caution, warning, and note statements used in the manual.

Essential safety guidelines for operation, service, and repair of the equipment.

Overview of the Amigo's key processing capabilities and functions.

List of items included with the Amigo unit, such as power cords and manuals.

Details on the product warranty terms, conditions, and exclusions.

Information on CRL's right to change specifications and product updates.

Step-by-step guide for installing the Amigo audio processor.

Critical checks and procedures to perform before powering on the unit.

Instructions for setting the unit to the correct AC power line voltage.

Guidance on connecting the Amigo for balanced and unbalanced audio.

Basic procedure for setting up the unit for general program requirements.

Procedure for adjusting MUX OUT for proper modulation level.

Checks and considerations for normal broadcasting with the Amigo.

Explanation of internal jumpers for configuring operational requirements.

How to use auxiliary outputs for standby transmitters or stereo encoders.

Important notes regarding bridging inputs and system connections.

Guidance on proper rack mounting, ventilation, and chassis care.

Overview of the Amigo's switches, indicators, and controls.

Adjusting audio input signal level to the input amplifier.

Control for adding bass punch to the radio station's sound.

Selecting the amount of instantaneous gain reduction for audio density.

Selecting stereo encoder operation modes: Stereo, Test, or Monaural.

Setting left and right auxiliary audio output levels.

Adjusting signal level and enhancement amount for stereo ambiance.

Description of switches on the rear panel like Aux Output Level and Operate/Bypass.

Explanation of the Amigo's power supply circuitry and operation.

Detailed explanation of audio signal paths and processing stages.

Theory behind the Automatic Gain Control loop for signal attenuation.

Explanation of the stereo enhancement circuitry and its controls.

Theory of the multiband limiting effect on pre-emphasis curves.

Explanation of the circuit providing overall limiting for signal control.

Function and operation of the 15kHz low pass filter circuit.

Theory of operation for the Amigo's stereo encoder and pilot generation.

Preventive maintenance schedule and procedures for optimal performance.

Step-by-step guide for the complete alignment of the Amigo unit.

Required test equipment and their initial settings for alignment.

Verification of power supply voltages and input amplifier levels.

Adjusting critical limiter and enhance circuitry for optimal performance.

Procedure for adjusting the filter drive circuit's performance.

Testing and alignment procedures for the Amigo stereo encoder.

Guidelines for diagnosing and resolving common operational problems.

Glossary of abbreviations used in the parts list.

Detailed parts lists for Main PC Board, Filter PC Board, and Multiplex Generator.

List of parts related to the unit's chassis and enclosure.

List of standard, optional, and packing accessories for the Amigo unit.