METHODS OF MEASUREMENT FOR EQUIPMENT USED IN DIGITAL MICROWAVE RADIO TRANSMISSION SYSTEMS - MEASUREMENTS ON SATELLITE EARTH STATIONS - TERMINAL EQUIPMENT - TDMA TRAFFIC EARTH STATION
International Electrotechnical Committee
Foreword
Introduction
Clause
1 Scope
2 Normative references
3 I.F. interface characteristics
3.1 Return loss
3.2 Level, frequency and spectrum of the modulator
output signal
3.3 Carrier on-off ratio
3.4 Phase and amplitude balance
4 Terrestrial interface characteristics
4.1 Level and shape of the output signal
4.2 Other parameters
5 Bit error ratio
5.1 General considerations
5.2 Modem BER performance
5.3 Overall system BER performance
6 Frame acquisition and synchronization
6.1 General considerations
6.2 Clock frequency and acquisition time
6.3 Receive frame acquisition and synchronization
6.4 Transmit frame acquisition
6.5 Transmit frame synchronization
6.6 Synchronization characteristics with additive noise
7 System control functions
7.1 General considerations
7.2 Reference station changeover test
7.3 Burst Time Plan and/or Channel Mapping Plan change
test
7.4 Other monitor and control function tests, including
service channels
Figures
Deals with methods of measurement on Time Division Multiple Access (TDMA) terminal equipment. There are various types of TDMA systems which may differ, for instance, in the bit rate, the frame burst format, and/or the acquisition and synchronisation scheme. The methods of measurement are described as generally as possible so that they may be applicable to various TDMA terminal equipment used in many international and regional satellite systems.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | SC 12E |
