BROADCAST VIDEO TAPE RECORDERS - METHODS OF MEASUREMENT - PART 4: ANALOGUE AUDIO PERFORMANCE MEASUREMENTS
International Electrotechnical Committee
1. General
1.1 Scope and object
1.2 Normative references
1.3 Definitions
2 Manual and automatic measurements
3. Procedure of measurement
4, Environmental conditions
5. Measurements on analogue audio baseband recording
using bias
5.1 Reproducing performance using calibration tape
5.2 Overall performance using reference tape
6. Measurement on analogue audio recording using
frequency modulation (FM audio)
6.1 Reproducing performance using calibration tape
6.2 Overall performance using reference tape
7. Special measurements
7.1 Measurements on FM carrier (unmodulated carrier
and deviation)
7.2 Measurements on AGC (amplitude characteristic;
attack time; hold time)
7.3 Measurements on switchable noise reduction
circuits
7.4 Measurements on non-switchable noise reduction
systems (in combination with a non-switchable AGC)
7.5 Polarity test
Annexes
A Method of measurement for magnetic tape flux
B Bibliography
Describes methods of measurement and special test signals for the analogue audio part of equipment that is mainly dedicated to recording reproduction of TV signals on magnetic tape in cassettes or on reels. Applies to acceptance tests, performance comparison and, as far as possible, to routine checks.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 100 |
