BS 6288-10:1989

National foreword
Committees responsible
Section One - General
1. Scope
Section Two - Time and control code (IEC Publication
461) for 6.3 mm wide twin track audio tape
2. General test conditions
3. Track configuration and mode of recording
3.1 Track pattern on tape
3.2 Mode of recording
3.3 Time correlation between time code and audio
     recording
3.4 Levels
3.5 Shape of the recorded pulses
4. Requirements for equipment for recording and
     reproducing the time code
4.1 Cross-talk
4.2 Inputs and outputs
Section Three - Address codes
5. Recommendation for pauses within programmes
Figures

Codes for 6.3 mm twin track magnetic tape and recording/reproducing equipment for professional use.

Section 2 applies to a time reference (80 bit time code according to IEC Publication 461) located on a track half-way between the two audio tracks of a 6.3 mm wide professional twin track magnetic tape for use at a tape speed of 19 cm/s or 38 cm/s.

Section 3 applies to an address code in the form of intentional pauses within a programme for the automatic recognition of individual parts of the programme.

Section 2. Time and control code (IEC publication 461) for 6.3 mm wide twin track audio tape

2 General test conditions

The characteristics of the equipment shall be measured under the following conditions:

• – at rated mains voltage;
• – at rated mains frequency;
• – ambient temperature between 15 °C and 35 °C;
• – relative humidity between 45 % and 75 %;
• – at 86 kPa to 106 kPa atmospheric pressure;
• – after at least 10 min operation.

NOTE See also Clause 8 of IEC Publication 94-3.