Goto Section: 17.115 | 17.118
FCC 17.117
Revised as of June 29, 2005
Goto Year:2004 |
2006
Sec. 15.117 TV broadcast receivers.
(a) All TV broadcast receivers shipped in interstate commerce or
imported into the United States, for sale or resale to the public,
shall comply with the provisions of this section, except that
paragraphs (f) and (g) of this section shall not apply to the features
of such sets that provide for reception of digital television signals.
The reference in this section to TV broadcast receivers also includes
devices, such as TV interface devices and set-top devices that are
intended to provide audio-video signals to a video monitor, that
incorporate the tuner portion of a TV broadcast receiver and that are
equipped with an antenna or antenna terminals that can be used for
off-the-air reception of TV broadcast signals, as authorized under
part 73 of this chapter.
(b) TV broadcast receivers shall be capable of adequately receiving
all channels allocated by the Commission to the television broadcast
service.
(c) On a given receiver, use of the UHF and VHF tuning systems shall
provide approximately the same degree of tuning accuracy with
approximately the same expenditure of time and effort: Provided,
however, That this requirement will be considered to be met if the
need for routine fine tuning is eliminated on UHF channels.
(1) Basic tuning mechanism. If a TV broadcast receiver is equipped to
provide for repeated access to VHF television channels at discrete
tuning positions, that receiver shall be equipped to provide for
repeated access to a minimum of six UHF television channels at
discrete tuning positions. Unless a discrete tuning position is
provided for each channel allocated to UHF television, each position
shall be readily adjustable to a particular UHF channel by the user
without the use of tools. If 12 or fewer discrete tuning positions are
provided, each position shall be adjustable to receive any channel
allocated to UHF television.
Note: The combination of detented rotary switch and pushbutton
controls is acceptable, provided UHF channels, after their initial
selection, can be accurately tuned with an expenditure of time and
effort approximately the same as that used in accurately tuning VHF
channels. A UHF tuning system comprising five pushbuttons and a
separate manual tuning knob is considered to provide repeated access
to six channels at discrete tuning positions. A one-knob (VHF/UHF)
tuning system providing repeated access to 11 or more discrete tuning
positions is also acceptable, provided each of the tuning positions is
readily adjustable, without the use of tools, to receive any UHF
channel.
(2) Tuning controls and channel readout. UHF tuning controls and
channel readout on a given receiver shall be comparable in size,
location, accessibility and legibility to VHF controls and readout on
that receiver.
Note: Differences between UHF and VHF channel readout that follow
directly from the larger number of UHF television channels available
are acceptable if it is clear that a good faith effort to comply with
the provisions of this section has been made.
(d) If equipment and controls that tend to simplify, expedite or
perfect the reception of television signals (e.g., AFC, visual aids,
remote control, or signal seeking capability referred to generally as
tuning aids) are incorporated into the VHF portion of a TV broadcast
receiver, tuning aids of the same type and comparable capability and
quality shall be provided for the UHF portion of that receiver.
(e) If a television receiver has an antenna affixed to the VHF antenna
terminals, it must have an antenna designed for and capable of
receiving all UHF television channels affixed to the UHF antenna
terminals. If a VHF antenna is provided with but not affixed to a
receiver, a UHF antenna shall be provided with the receiver.
(f) The picture sensitivity of a TV broadcast receiver averaged for
all channels between 14 and 69 inclusive shall not be more than 8dB
larger than the peak picture sensitivity of that receiver averaged for
all channels between 2 and 13 inclusive.
(g) The noise figure for any television channel 14 to 69 inclusive
shall not exceed 14 dB. A TV receiver model is considered to comply
with this noise figure if the maximum noise figure for channels 14-69
inclusive of 97.5% of all receivers within that model does not exceed
14 dB.
(1) The responsible party shall measure the noise figure of a number
of UHF channels of the test sample to give reasonable assurance that
the UHF noise figure for each channel complies with the above limit.
(2) The responsible party shall insert in his files a statement
explaining the basis on which it will rely to ensure that at least
97.5% of all production units of the test sample that are manufactured
have a noise figure of no greater than 14 dB.
(3) [Reserved]
(4) In the case of a TV tuner built-in as part of a video tape
recorder that uses a power splitter between the antenna terminals of
the video tape recorder and the input terminals of the TV tuner or a
TV broadcast receiver that uses a power splitter between the antenna
terminals of two or more UHF tuners contained within that receiver, 4
dB may be subtracted from the noise figure measured at the antenna
terminals of the video tape recorder or TV broadcast receiver for
determining compliance of the UHF tuner(s) with the 14 dB noise figure
limit.
(h) Digital television reception capability. TV broadcast receivers
are required only to provide useable picture and sound commensurate
with their video and audio capabilities when receiving digital
television signals.
(i) Digital television reception capability implementation schedule.
(1) Responsible parties, as defined in Sec. 2.909 of this chapter, are
required to equip new TV broadcast receivers that are shipped in
interstate commerce or imported from any foreign country into the
United States and for which they are responsible to comply with the
provisions of this section in accordance with the following schedule:
--Receivers with screen sizes 36' and above--50% of all of a
responsible party's units must include DTV tuners effective July 1,
2004; 100% of such units must include DTV tuners effective July 1,
2005
--Receivers with screen sizes 25' to 36'--50% of all of a responsible
party's units must include DTV tuners effective July 1, 2005; 100% of
such units must include DTV tuners effective July 1, 2006
--Receivers with screen sizes 13' to 24'--100% of all such units must
include DTV tuners effective July 1, 2007
--Other devices (videocassette recorders (VCRs), digital video disk
and digital versatile disk (DVD) players/recorders, etc.) that receive
television signals--100% of all such units must include DTV tuners
effective July 1, 2007.
(2) For purposes of this implementation schedule, screen sizes are to
be measured diagonally across the picture viewing area. The
requirement for equipping new TV broadcast receivers with DTV
reception capability does not apply to units with integrated
tuners/displays that have screen sizes measuring less than 7.8 inches
vertically, i.e., the vertical measurement of a screen in the 4:3
aspect ratio that measures 13' diagonally across the picture viewing
area.
(3) Responsible parties may include combinations of DTV monitors and
set-top DTV tuners in meeting the required percentages of units with a
DTV tuner if such combinations are marketed together with a single
price.
(j) For a TV broadcast receiver equipped with a cable input selector
switch, the selector switch shall provide, in any of its set
positions, isolation between the antenna and cable input terminals of
at least 80 dB from 54 MHz to 216 MHz, at least 60 dB from 216 MHz to
550 MHz and at least 55 dB from 550 MHz to 806 MHz. The 80 dB standard
applies at 216 MHz and the 60 dB standard applies at 550 MHz. In the
case of a selector switch requiring a power source, the required
isolation shall be maintained in the event the device is not connected
to a power source or power is interrupted. An actual switch that can
alternate between reception of cable television service and an antenna
is not required for a TV broadcast receiver, provided compliance with
the isolation requirement specified in this paragraph can be
demonstrated and the circuitry following the antenna input terminal(s)
has sufficient band-width to allow the reception of all TV broadcast
channels authorized under this chapter. The provisions of this
paragraph regarding frequencies in the range 550 MHz to 806 MHz are
applicable as of June 30, 1997.
[ 54 FR 17714 , Apr. 25, 1993, as amended at 59 FR 25341 , May 16, 1994;
61 FR 30532 , June 17, 1996; 67 FR 63294 , Oct. 11, 2002]
Goto Section: 17.115 | 17.118
Goto Year: 2004 |
2006
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