NILECJ Standard for Fixed and Base Station FM Transmitters: A Voluntary National StandardU.S. Department of Justice, Law Enforcement Assistance Administration, National Institute of Law Enforcement and Criminal Justice, 1975 - Radio frequency modulation - 16 pages |
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... Modulation Characteristics 4.6.1 Audiofrequency Harmonic Distortion 4.6.2 FM Hum and Noise Level ......... 4.6.3 Audiofrequency Response . 4.6.4 Frequency Deviation 4.6.5 Modulation Limiting 4.7 Electromagnetic Compatibility ...
... Modulation Characteristics 4.6.1 Audiofrequency Harmonic Distortion 4.6.2 FM Hum and Noise Level ......... 4.6.3 Audiofrequency Response . 4.6.4 Frequency Deviation 4.6.5 Modulation Limiting 4.7 Electromagnetic Compatibility ...
Page 3
... Modulation Characteristics H. Audiofrequency Harmonic Distortion I. FM Hum and Noise Level J. Frequency Deviation 5 % 40 dB 5 % 5 % 40 dB 5 % 5 % 40 dB 5 % Electromagnetic Compatibility ... test personnel to design an impedance matching ...
... Modulation Characteristics H. Audiofrequency Harmonic Distortion I. FM Hum and Noise Level J. Frequency Deviation 5 % 40 dB 5 % 5 % 40 dB 5 % 5 % 40 dB 5 % Electromagnetic Compatibility ... test personnel to design an impedance matching ...
Page 6
... TEST METHODS 5.1 Standard Test Conditions All measurement equipment shall be allowed to warm up until the system has ... Modulation Audiofrequency test modulation shall be 1 kHz ( from a source with distortion less than one percent ) at the ...
... TEST METHODS 5.1 Standard Test Conditions All measurement equipment shall be allowed to warm up until the system has ... Modulation Audiofrequency test modulation shall be 1 kHz ( from a source with distortion less than one percent ) at the ...
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... modulation limiting measurements . 5.5.5 Modulation Limiting Test For this measurement , use figure 8 and adjust the transmitter controls for normal operation . Adjust ... Compatibility Tests 5.6.1 Conducted Spurious Emission Tests 5.6.1.1.
... modulation limiting measurements . 5.5.5 Modulation Limiting Test For this measurement , use figure 8 and adjust the transmitter controls for normal operation . Adjust ... Compatibility Tests 5.6.1 Conducted Spurious Emission Tests 5.6.1.1.
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A Voluntary National Standard National Institute of Law Enforcement and Criminal Justice. 5.6 Electromagnetic Compatibility Tests 5.6.1 Conducted Spurious Emission Tests 5.6.1.1 Test ... compatibility test modulation . AUDIO OSCILLATOR ...
A Voluntary National Standard National Institute of Law Enforcement and Criminal Justice. 5.6 Electromagnetic Compatibility Tests 5.6.1 Conducted Spurious Emission Tests 5.6.1.1 Test ... compatibility test modulation . AUDIO OSCILLATOR ...
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Common terms and phrases
attenuated a minimum audio input level audio input load audio output load Audiofrequency Harmonic Distortion audiofrequency response audiofrequency test modulation Authorized Bandwidth BAND REJECTION FILTER base station FM Block diagram Carrier Attack Carrier Frequency Tolerance carrier power output compatibility test modulation Conducted Spurious Emissions Criminal Justice dB 55 dB decibels deviation meter DEVIATION MONITOR dipole antenna electromagnetic compatibility test Enforcement and Criminal fixed and base FM Hum frequency deviation frequency modulation Frequency Stability hum and noise Institute of Law Law Enforcement minimum of Item Modulation Limiting NILECJ STANDARD noise level noise measurement oscilloscope OUTPUT LOAD FIGURE peak detector performance requirements Radiated Spurious Emissions rated system deviation SAMPLER STANDARD OUTPUT selective voltmeter Sideband Spectrum SINAD SPECTRUM ANALYZER FIGURE standard audio input standard audio output standard duty cycle STANDARD OUTPUT LOAD standard supply voltage station FM transmitters temperature test receiver TEST SAMPLER Test The transmitter TRANSMITTER UNDER TEST VOLTMETER OR SPECTRUM VSWR