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General| Brand | Sencore |
|---|---|
| Model | CB42 |
| Category | Measuring Instruments |
| Language | English |
Overview of the CB42 analyzer and its purpose in CB service.
Highlights key capabilities for CB alignment and troubleshooting.
Details technical specifications for RF generator, frequency counter, and other parameters.
Selector for various digital readout functions like RF Power, Modulation, and Off Channel.
Controls for signal generation, including AM/SSB modulation and audio frequency selection.
Connectors for signals, including Microvolt Output, Speaker Sub, and general inputs/outputs.
Instructions for connecting the CB42 to AC or DC power sources.
Guidance on connecting and configuring the transceiver for testing.
Details on using the RF signal generator for AM and SSB testing.
Procedure for using the adjustable IF generator for alignment.
Instructions for using the audio generator for modulation and audio tests.
How to use the frequency counter for measuring signal frequencies.
Steps to measure transmitter frequency deviation against FCC specifications.
Procedure for testing crystal activity and fundamental frequency.
Instructions for measuring Peak Envelope Power (PEP) of RF signals.
Method for measuring receiver audio output power and sensitivity.
How to use the scope adapter output for modulation envelope analysis.
Explains basic CB transceiver theory and troubleshooting techniques.
Block diagram and signal flow for AM transmitters.
Block diagram and signal flow for AM receivers.
Block diagram of a typical SSB transmitter.
Block diagram of a typical SSB receiver.
Explanation of frequency synthesizer circuits for channel selection.
Description of Programmable Phase-Locked Loop (PPLL) circuits.
Method to measure receiver audio output power and identify common defects.
Test procedure for determining AM receiver squelch operation.
Procedure to measure AM receiver sensitivity as per EIA standards.
Test for AM receiver's selectivity against adjacent channel interference.
Procedure to test the AM receiver's Automatic Gain Control (AGC) circuit.
Method to determine AM receiver gain in dB.
Test for AM receiver ANL/ANB circuit effectiveness using NL204.
Initial check and adjustment of SSB receiver clarifier for proper operation.
Procedure to measure SSB receiver sensitivity using the (S+N)/N ratio.
Test for SSB receiver's ability to reject unwanted sideband signals.
Procedure to test SSB receiver AGC circuit performance.
Test for determining the SSB receiver squelch operation point.
Test for SSB receiver ANL/ANB effectiveness using NL204.
Procedure to measure AM transmitter frequency accuracy.
Procedure to measure SSB transmitter frequency accuracy.
Test to measure SSB transmitter frequency deviation.
Procedure to test SSB clarifier control for frequency stability.
Specific applications of the scope adapter for waveform analysis.
Method to detect and analyze residual carrier noise in transmitter output.
Using a single tone to test SSB balanced modulator performance.
Using two tones to test SSB balanced modulator performance.
Overview of the Maintenance and Service section.
Explanation of the CB42's functional blocks and overall system diagram.
Instructions for performing essential calibration procedures.
List of equipment necessary for calibration and testing.
Crucial safety precautions for operating and servicing electronic equipment.
Index of PC boards, schematic references, and component locations.
Cross-references common AM receiver customer complaints to diagnostic tests.
Cross-references common AM transmitter symptoms to diagnostic tests.
Cross-references common SSB receiver symptoms to diagnostic tests.
Cross-references common SSB transmitter symptoms to diagnostic tests.
Setup and application for using the RF generator for receiver testing.
Setup and application for using the IF generator for alignment.
Setup and application for using the audio generator for modulation tests.
Procedure for using the 1 MEG frequency counter input.
Procedure for testing crystal activity and fundamental frequency.
Reference table for CB channel frequencies and FCC limits.
Guide on how to use the dB conversion chart for calculations.
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