IEEE Std 187:2003 pdf free download

IEEE Std 187:2003 pdf free download

IEEE Std 187:2003 pdf free download.IEEE Standard for Measurement Methods of Emissions from FM and Television Broadcast Receivers in the Frequency Range of 9 kHz to 40 GHz.
Multiple peripherals/accessories (more than two) may be distributed around thc table as shown in Figure 4. If the EUT peripherals are designed to be stacked in typical use, they shall be stacked.
Accessories, such as ac power adapters, which are typically table-mounted because of cable length. shall be mounted on the table lop in a typical manncr
Accessories, which are typically floor-mounted, shall occupy a floor position directly below the portion of the table-top EUT to which they are typically connected.
6.2.10 Placement of floor-standing accessories)peripherals
Accessories/peripherals that are part or a floor-standing system shall be placed in one typical arrangement with typical spacing between equipment cabinets or enclosures as shown in Figure 5. If more than two accessories are present. a typical arrangement should be chosen that maintains typical spacing between all equipment cabinets or enclosures.
6.3 Measurement procedure
With the uned voltmeter connected to one 50 (1 output of the power-line impedance stabilization network, as shown in Figure 4 (for table-top equipment) or Figure 5 for floor-standing equipment). the voltage between this side of the power line and earth ground is measured at the frequencies of interest. The measurement is repeated with the voltmeter connected to the other 50 i] terminal of the power-line impedance stabilization network.
6.3.1 Recording of measured data
Of those disturbances above (L-20 dli). where L is the limit level in logarithmic units, recwd at least the disturbance levels and the frequencies of the six highest disturbances. The emission voltage is recorded separately for each side of the power line at each frequency of interest. Provide measurement uncertainty data if applicable. (See ISO[IEC 17025 for guidance
7. Method of measurement (radiated emissions)
7.1 General
This section of the standard defines a system whereby emissions described in Clause and Clause ti may be measured. It also establishes operating conditions and equipment specifications necessary for accomplishing these measurements. In this method, the receiver and measuring equipment are set up under reproducible conditions, as dcscribcd below, and the field strength of the various radiations is measured under specified conditions. This method is applicable to the measurement of spurious radiation in the frequency range of 30 MHz to 5(XX) MI-Iz. For radiation in other bands. other methods of measurement may be necessary.
7.2 Equipment required and setup details
7.2.1 Test signal
The standard test signal for FM radio receivers is a RF signal modulated with a I kHi tone. A digital sound signal is a RF signal modulated with a digital data stream containing sound information.