BS IEC 60489-2:1991 pdf free download.Methods or measurement for radio equipment used in the mobile services – Part 2: Transmitters employing A3E, F3E or G3E emissions.
1. Scope
This standard refers specifically to mobile radio transmitters having audio-frequency bandwidths generally not exceeding 10 kHz for the transmission of voice and other types of signals, using:
a) angle modulation (phase/frequency modulation), or
b) double-sideband amplitude modulation with full carrier.
This standard is intended to be used in conjunction with IEC 489-1. The supplementary terms and definitions and the conditions of measurement set forth in this standard are intended for type tests and may be used also for acceptance tests.
2. Object
The object of this standard is to standardize the definitions, the conditions and the methods of measurement used to ascertain the performance of transmitters within the scope of this standard and to make possible a meaningful comparison of the results of measurements made by different observers and on different equipment.
3. Suppleme.tary terms and definitions
For the purpose of this standard, the following supplementary definitions apply.
3.1 Input simulation network (see figure 1, page 9)
A weighting network which modifies the characteristics of an audio-frequency generator so that it simulates the amplitude/frequency characteristics of a device which produces an electrical input signal as a result of a physical change.
3.2 Rated radio-frequency output power
The power specified by the manufacturer which, under specified conditions of operation, should be available at the transmitter output terminals when the latter are connected to a specified load.