BS 833:1970
Superseded
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Specification for radio interference limits and measurements for the electrical ignition systems of internal combustion engines
Hardcopy , PDF
English
31-07-1970
15-04-1999
Cooperating organizations
Foreword
Specification
1. General
1.1 Scope
1.2 Definitions
2. Limits
2.1 Limits of radiation
3. Method of measurement
3.1 Measuring apparatus
3.2 Measuring site
3.3 Disposition of measuring aerial when testing road
vehicles and boats
3.4 Disposition of the measuring aerial for all other
equipment
3.5 Test procedure
3.6 Type approval
3.7 Production conformity in type-approved equipment
4. Measurement of insertion loss
4.1 General
4.2 Measurement of the insertion loss of ignition
suppressors
Appendices
A. Examples of suppression arrangements for ignition
systems
B. Suppression components (suppressors)
Tables
1. Limits of radiation
2. Examples of suppression arrangements
Figures
1. Graphical presentation of limits of radiation
2. Position of aerial relative to vehicle
3. 15 kV annular spark gap
4. Suppression devices
5. Test circuit
6. General arrangement of test box
7. Details of test box lid
8. Details of test box
9. Straight plug suppressor (screened or unscreened)
10. Right angle plug suppressor (screened or
unscreened)
11. Suppressed plug
12. Resistor brush in distributor cap
13. Resistor in distributor cap
14. Resistive rotor
15. Interference suppression ignition cable (resistive
or reactive)
16. Practical arrangement for insulation test
For frequency range 40 MHz to 250 MHz from road vehicles, portable prime movers, construction equipment, agricultural machinery and boats. Method of measurement; insertion loss of components used in making up radio interference suppression devices. Does not apply to aircraft.
| Committee |
GEL/210
|
| DevelopmentNote |
Superseded by BS CISPR 12(1997), but remains current. Inactive for the new design. Supersedes 69/16024 DC (10/2005)
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| CISPR 21:1999 | Similar to |
| UNE-EN ISO 10360-3:2001 | Identical |
A newer version of this standard is available.
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