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10 C.F.R. Appendix H to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Television Sets

Title 10 - Energy

Title 10: Energy
PART 430—ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS
Subpart B—Test Procedures

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Appendix H to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Television Sets

1. Definitions

1.1  “IRE-unit flat field” means a specific video electrical signal which results in a particular level of brightness of the television screen as established by the Institute of Radio Engineers.

1.2  “Filament keep-warm” means a feature that provides a voltage to keep vacuum tube and/or picture tube filaments warm for the purpose of allowing almost instantaneous response to the power control switch.

1.3  “Operating time” (to) means the hours per year during which the television set is operating with power control turned on.

1.4  “Remote control” means an optional feature which allows the user to control the television set from more than one location by a hand held device.

1.5  “Standby power consumption” (Ps) means the minimum amount of energy consumed with the power control switch turned off.

1.6  “Standby time” (ts) means the hours per year during which the television set is connected to a power outlet with the power control switch turned off.

1.7  “Vacation switch or master on-off switch” means an optional energy saving feature incorporated into the design of a television set that permits the user to disconnect the filament keep-warm circuit(s).

1.8  “Remote control defeat switch” means a switch which permits the user to disconnect all standby power to a television set.

2. Testing Conditions and Measurements

2.1  Test equipment and test signals. The following equipment and test signals shall be used for testing of television sets.

2.1.1  Regulated power source capable of supplying 120 volts (±1.2 volts) alternating current.

2.1.2  Signal generator capable of producing radio frequency (RF) television test signals, at a convenient very high frequency (VHF) channel, modulated with, National Television System Committee composite video as follows:

2.1.2.1  Standard White Pattern, RF signal modulated to 87 percent with a 100 IRE-unit flat field.

2.1.2.2  Standard Black Pattern, all adjustments as for 2.1.2.1 except modulated with a zero IRE-unit flat field.

2.1.2.3  The test signals in 2.1.2.1 and 2.1.2.2, supplied by a source whose impedance equals the design antenna impedance of the television set under test, shall be adjusted to a level of 70 decibels (dB) ±3dB, referred to a zero dB level of one femtowatt (1×10⁻¹⁵ watt) available power. (For a 300 ohm source, 70 dB referred to one femtowatt corresponds to an open-circuit voltage of 3.5 millivolts. For the calculation of “available power” use American National Standard C.16.13–1961, Method of Testing Monochrome Television Broadcast Receivers.)

2.1.3  Wattmeter capable of measuring the average power consumption of the television set under test. The wattmeter shall be accurate to within 1 percent of the full scale value. All measurements shall be made on the upper half of the scale of the wattmeter.

2.2  Initial set-up of television set.

2.2.1  Remove all batteries from television sets designed for both battery and alternating current operation. Deactivate all present or automatic controls affecting brightness which are customer options. Adjust all non-customer controls according to the manufacturer's service procedure.

2.2.2  Apply power to the television set under test from the power source specified in 2.1.1 through the wattmeter specified in 2.1.3. Adjust the volume control to the lowest possible setting.

2.2.3  Connect the output of the signal generator as specified in 2.1.2 to the VHF antenna terminals of the television set. Tune the television set to the channel of the RF signal.

2.3  Measurement of operating power consumption (Po)

2.3.1  Turn on the television set and allow at least five minutes warm-up time. With the synchronization controls adjusted for a stable test pattern, apply the standard white pattern specified in 2.1.2.1 to the television set. Adjust any customer controls other than the volume or synchronization controls for maximum power consumption as indicated by the wattmeter specified in 2.1.3. Illuminate any room illuminance sensor which has not been deactivated, to produce maximum power consumption. Record the white pattern consumption (Pw) as indicated by the wattmeter in watts.

2.3.2  Change the signal source to the standard black pattern specified in 2.1.2.2. Adjust any customer controls, other than the volume or synchronization controls, for the minimum power consumption as indicated by the wattmeter. Cover any room illuminance sensor which has not been deactivated. Record the black pattern power consumption (Pb) as indicated by the wattmeter in watts.

2.3.3  Compute the operating power consumption (po) as follows:

Po=(Pw+Pb/2)

where

Po=operating power consumption in watts

Pw=as determined from 2.3.1

Pb=as determined from 2.3.2

2.2  Measurements of standby power consumption (Ps)

2.4.1  For television sets without either a vacation switch or a remote control defeat switch, turn the power switch off and after two minutes measure the standby power consumption (P).

2.4.2  For a television set equipped with a remote control defeat switch, a vacation switch or both, turn the power switch, any vacation switch, and any remote er consumptions, (Pmax). The standby power is then calculated from the equation:

Ps=[(P_max−P_min)/2]+P_min

where

Ps=standby power consumption in watts

P_max=power consumption, in watts, measured with the television set power switch off and the vacation switch and remote control defeat switch in the highest energy consuming position.

P_min=power consumption, in watts, measured with the television set power switch off and the vacation switch and remote control defeat switch in the lowest energy consuming position.

3.0  Average Annual Energy Consumption

E=(Poto/1,000)+(Psts/1,000)=2.2Po+6.56Ps

where

E=total average energy consumed by the television set (kilowatt-hour per year)

Po=operating power consumption as computed in 2.3.3

to=operating time, 2,200 h/yr

Ps=standby power consumption computed in 2.4

ts=standby time, 6,560 h/yr

[42 FR 46154, Sept. 14, 1977. Redesignated and amended at 44 FR 37938, June 29, 1979]

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