METHODS OF MEASUREMENT FOR RADIO TRANSMITTERS - PART 1: GENERAL CHARACTERISTICS FOR BROADCAST TRANSMITTERS
International Electrotechnical Committee
FOREWORD
1 Scope
2 Normative references
3 Definitions
4 General conditions of measurement and operation
5 General performance characteristics
5.1 Transmission systems
5.2 Frequency (range, stability, etc.)
5.3 Output power
5.4 Power consumption
5.5 Impedance
5.6 Bandwith
5.7 Out-of-band emission
5.8 Spurious emission
5.9 Cabinet radiation
6 Protection against atmospheric discharge
6.1 General
6.2 Methods of measurement
7 Acoustic noise produced by the transmitter system
7.1 Definition
7.2 General
7.3 Measurements
Annex A (informative) Acoustic noise in transmitter halls
Annex B (informative) Protection against atmospheric
discharge
Annex C (normative) Transmitter frequency tolerances
Annex D (normative) Permitted spurious emission power
levels
Annex E (informative) Bibliography
Figures
1 - Example of frequency drift as a function of time f(t)
2 - Typical pulse generator output voltage characteristic
3 - Example of a block diagram for the pulse generator
A1 - Acoustic noise rating nomogram
B1 - Test bench for measurements of protection against
impulses of magnitude 1,2/50 of the 6kV peak value
B2 - Test bench for measurements of protection against
impulses of magnitude 1,2/50 of the 6kV peak vaue
B3 - Correction factor for air density
B4 - Voltage waveform of an ideal impulse
B5 - Examples of curves for the determination of the
ideal peak value
B6 - Examples of irregular waveforms
Gives general characteristics of broadcast transmitters and standardizes the conditions and methods of measurement used to ascertain the performance of a broadcast transmitter and to make a comparison possible of the results of measurements made by different observers. The measurement methods are meant for type tests and may also be used for acceptance tests and factory tests.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | SC 12C |
