NILECJ Standard for Mobile FM Receivers: A Voluntary National StandardU.S. Department of Justice, Law Enforcement Assistance Administration, National Institute of Law Enforcement and Criminal Justice, 1975 - Government publications - 14 pages |
From inside the book
Results 1-5 of 7
Page 2
... output of a receiver as a function of frequency within a specified bandwidth . 3.7 . Intermodulation Attenuation The ratio , expressed in decibels , of ( 1 ) the selected rf signal levels that produce an intermodulation response to ( 2 ) ...
... output of a receiver as a function of frequency within a specified bandwidth . 3.7 . Intermodulation Attenuation The ratio , expressed in decibels , of ( 1 ) the selected rf signal levels that produce an intermodulation response to ( 2 ) ...
Page 3
... output power to a designated level upon removal of the rf input signal . 3.21 . Standby Mode The condition in a transmitting and receiving system when the system is energized but not receiving or transmitting . 3.22 . Threshold Squelch ...
... output power to a designated level upon removal of the rf input signal . 3.21 . Standby Mode The condition in a transmitting and receiving system when the system is energized but not receiving or transmitting . 3.22 . Threshold Squelch ...
Page 7
... output impedance , a maximum stand- ing - wave ratio of 1.2 , and an output level accurate to ± 2 dB . The generator should include a digital frequency counter having an uncertainty no greater than one part in 106 , and a deviation ...
... output impedance , a maximum stand- ing - wave ratio of 1.2 , and an output level accurate to ± 2 dB . The generator should include a digital frequency counter having an uncertainty no greater than one part in 106 , and a deviation ...
Page 8
... output and the receiver volume con- trol for audio output power ( item M ) . Do not readjust the volume control for the remain- der of the measurement . Decrease the output level of the generator until the SINAD ratio of the receiver is ...
... output and the receiver volume con- trol for audio output power ( item M ) . Do not readjust the volume control for the remain- der of the measurement . Decrease the output level of the generator until the SINAD ratio of the receiver is ...
Page 11
... output levels of generators # 2 and # 3 to produce a 6 dB SINAD ratio with all three signals present . Maintain ... level of the generator to zero , and measure the audio noise out- put power . Slowly adjust the squelch control until the ...
... output levels of generators # 2 and # 3 to produce a 6 dB SINAD ratio with all three signals present . Maintain ... level of the generator to zero , and measure the audio noise out- put power . Slowly adjust the squelch control until the ...
Common terms and phrases
1-millivolt output 12 dB SINAD accordance with paragraph Adjacent channel selectivity adjust the receiver adjust the squelch audio distortion audio hum audio noise output AUDIO OUTPUT LOAD audio output power Audiofrequency Response dB 10 dB dB 6 dB dB SINAD ratio Enforcement and Criminal equipment as shown expressed in decibels FM signal frequency counter frequency deviation hum and noise Interconnect the receiver intermediate frequency intermodulation attenuation measure the audio mobile FM receivers Modulate the FM Modulation Acceptance Bandwidth noise output power output level output power item power supply voltage receiver and test RECEIVER UNDER TEST selectivity and desensitization Sensitivity Test shown in figure simple harmonic motion SINAD sensitivity SPST switch spurious response attenuation squelch attack Squelch Block squelch control Squelch Release STANDARD AUDIO OUTPUT standard power supply standard test frequency standard test modulation standing wave ratio temperature test equipment Test Interconnect TEST STANDARD AUDIO Threshold squelch sensitivity Tight squelch sensitivity unsquelched μν