Ministerial Standard 315 (Cth)

1987 No. 236*1* STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983

*1* Notified in the Commonwealth of Australia Gazette on 16 October 1987.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 1 
 STANDARD FOR WIRELESS VIDEO TRANSMITTERS 
 PART 1-PRELIMINARY 

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 1 
Citation 


  1. This standard may be cited as "Ministerial Standard 315".

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 2 
Commencement 


  2. This standard shall come into operation on the 2 November 1987.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 3 
Interpretation 


  3. In this standard unless the contrary intention appears-

  "AC" means alternating current;

  "dB" means decibel;

  "dBuV/m" means decibel relative to one microvolt per metre;

  "device" means a device to which this standard applies;

  "kHz" means kilohertz;

  "MHz" means megahertz;

  "MS" means Ministerial Standard;

  "emission" means radiation produced, or the production of radiation, by a
radiocommunications transmitter;

  "out-of-band emission" means an emission which results from the modulation
process, on a frequency or frequencies outside the permitted bandwidth, but
excluding spurious emissions;

  "permitted bandwidth" in relation to a radiocommunications transmitter means
the 11.5 MHz band centred on the vision carrier frequency on which the
transmitter is operating;

  "radiation" means the outward flow of energy from any source by means of
radio transmission;

  "radio transmission" has the same meaning as in section 3 of the
Radiocommunications Act 1983;

  "radiocommunications transmitter" has the same meaning as in section 3 of
the Radiocommunications Act 1983;

  "spurious emission" means an emission on a frequency or frequencies which
are outside the permitted bandwidth and the level of which may be reduced
without affecting the corresponding transmission of information;

  "standard device" means a device which complies with this standard;

  "unwanted emission" means a spurious emission or an out-of-band emission;

  "video appliance" includes video cassette recorder, video camera, video
game, computer or other device producing a video signal;

  "wireless video transmitter" means a radiocommunications transmitter
designed or intended to be used to transmit signals from video appliances to
television receivers on the same premises by means of radio transmissions;
and

  "degree C" means degree Celsius.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 4 
Devices to which this standard applies 


  4. This standard shall apply to radiocommunications transmitters which are
wireless video transmitters.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 2 
 PART 2-GENERAL 

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 5 
Equipment markings 


  5. (1) Subject to sub-clause 5(3), there shall be displayed on a device:
  (a)  a compliance statement in the form set out in item 1 of the schedule-

      (i)  indicating that the device complies with this standard; and

     (ii)  citing the type approval number shown on the compliance statement

certificate issued in respect of the device under section 12 of the
Radiocommunications Act 1983; and

  (b)  its type or model designation which shall be distinctively different
from that of imported equipment requiring modification before it complies with
this standard.
  (2) A statement or marking displayed on a device in accordance with
sub-clause 5 (1) shall be clearly visible on the exterior surface of the
device, indelible, tamper proof and affixed in such a manner as not to be
removeable except by destruction or defacing.
  (3) The requirement of paragraph 5 (1) (a) does not apply to a device unless
the importer, manufacturer or supplier of the device, as the case may be, has
been issued with a compliance statement certificate in respect of the device.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 6 
Adjustment Mechanisms 


  6. (1) For the purpose of this clause an 'adjustment mechanism' is a
mechanism which enables the operation of a standard device to be altered so
that the device no longer complies with this standard.
  (2) An adjustment mechanism shall be contained within the housing of a
device and shall be accessible only with the use of tools such as screwdrivers
and spanners.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 7 
Antenna 


  7. (1) A device shall not incorporate an antenna other than a single
monopole antenna of a length not exceeding 0.15 metres and arranged so that
the radiation is:

  (a)  vertically polarised; and

  (b)  omnidirectional in the horizontal plane.
  (2) A device shall not incorporate any provision for the connection of an
external antenna and shall not employ an antenna which is not an integral part
of that device.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 8 
Conditions of operation 


  8. (1) The requirements of Part 3 shall be met by a device when it operates
at:

  (a)  ambient temperatures of between 5degree C and 40degree C inclusive;
and

  (b)  primary supply voltages within +-10% of that declared by the
manufacturer.
  (2) The requirements of Part 3 shall be met by a device when placed on a
non-conducting surface 1.5 metres above the ground with the antenna extended
vertically and with the AC mains cable suspended vertically below the
non-conducting surface.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 3 
 PART 3-TRANSMITTER 

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 9 
Nominal vision carrier frequency 


  9. (1) A device shall not be capable of operation except on a nominal vision
carrier frequency in the range 534.25 MHz to 800.25 MHz inclusive.
  (2) A device shall be capable of being tuned to operate on vision carrier
frequencies over a minimum range of 70 MHz.
  (3) A device shall not be capable of operating on more than one vision
carrier frequency at any one time.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 10 
Vision carrier field strength 


  10. The peak vision carrier field strength of a device shall not exceed 76
dBuV/m at a distance of 3 metres from the device.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 11 
Unwanted emissions 


  11. The power of each unwanted emission from a device, relative to the
vision carrier power of the device shall be attenuated by-

  (1) at least 20 dB, where the frequency of the emission differs from the
centre frequency of the permitted bandwidth by greater than 5.75 MHz but not
greater than 14 MHz; and

  (2) at least 40 dB, where the frequency of the emission differs from the
centre frequency of the permitted bandwidth by greater than 14 MHz.

1987 No. 236 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - SCHEDULE 
SCH

                                    SCHEDULE

Item 1       THE FORM OF A COMPLIANCE STATEMENT                   Clause 5

             "COMPLIES WITH MS 315

             TYPE APPROVAL NO ...................................