METHODS OF MEASUREMENT FOR RADIO TRANSMITTERS - BANDWIDTH, OUT-OF-BAND POWER AND POWER OF NON-ESSENTIAL OSCILLATIONS - SECOND SUPPLEMENT: MODULATING SIGNALS FOR THE MEASUREMENT OF BANDWIDTH AND OUT-OF-BAND POWER OF TRANSMITTERS FOR TELEPHONY AND SOUND BROADCASTING
International Electrotechnical Committee
FOREWORD
PREFACE
1. General notes on measuring bandwidth and
out-of-band power
2. Type of modulating signal
2.l Basic modulating signal
2.2 Weighting of the basic modulating signal
2.3 Magnitude of the modulating signal
3. Measuring equipment
4. Results of measurements and conclusions
APPENDICES
A - Bibliography
B - The frequency spectrum of a modulating signal
consisting of a series of rectangular pulses
C - Conventional telephone signal (C.C.I.T.T.
Recommendation G.227)
D - Voice simulating method of modulation for land-mobile
communication FM or PM transmitters used in the U.S.A.
E - Spectral distribution of energy in the standard signal
and weighting network for obtaining this signal used
for interference measurements on radio sound
broadcasting circuits
F - Curves showing the spectral distribution of energy
in sound broadcasting programmes
G - Results of bandwidth and out-of-band power measurements
carried out on a Class A3B transmitter modulated with
flat random-noise or with a flat pulse spectrum
Deals with the measurement of the power of components, either in the outer part of the emitted spectrum or far remote from the center part of the spectrum, that may cause interference to other emissions.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | SC 12C |
