SIST EN 300 220-2 V1.2.1:2003

SIST EN 300 220-2 V1.2.1:2003 is the Slovenian adoption of ETSI EN 300 220-2 V1.2.1, a European Telecommunications Standard for short range devices. It covers supplementary technical characteristics and test methods for radio equipment operating from 25 MHz to 1 000 MHz with power levels up to 500 mW. The document is aimed at manufacturers, test labs, and users who need receiver performance guidance, especially for alarms, identification, telecommand, telemetry, and related non-speech applications.

What does SIST EN 300 220-2 V1.2.1:2003 specify?

SIST EN 300 220-2 V1.2.1:2003 specifies supplementary parameters for short range devices, not parameters intended for regulatory purposes. In practice, it tells you how to judge receiver performance and what minimum receiver characteristics are expected for reasonable link reliability.

The scope covers equipment with an RF output connection and/or an integral antenna, and it applies to fixed, mobile, and portable stations. It also notes that the document is a product family standard, so specific application standards may add more requirements.

The document is organized into scope, normative references, definitions/symbols/abbreviations, receiver parameters, and Annex A for social alarm systems.

What are the key requirements of SIST EN 300 220-2 V1.2.1:2003?

The core of SIST EN 300 220-2 V1.2.1:2003 is clause 4, which sets receiver performance limits and the test concepts behind them. These are the figures that matter when you design, select, or evaluate SRD receivers.

Receiver sensitivity and usable signal level

Clause 4.1 defines maximum usable sensitivity for conducted tests. The receiver is assessed with a carrier at the nominal frequency and normal test signal modulation, and the output must meet one of the stated quality criteria: SND/ND performance, bit error ratio, or message acceptance ratio. In practice, this tells you the weakest input signal the receiver must still handle.

Clause 4.2 covers average usable sensitivity for equipment with an integral or dedicated antenna. The measurement uses multiple receiver orientations, which matters because antenna position affects real-world performance. The limits vary by frequency band and by antenna arrangement, so you need to match the test setup to the product design.

Receiver selectivity and interference resistance

Clause 4.3 sets co-channel rejection, which checks how well the receiver handles an unwanted signal on the same channel. Clause 4.4 sets adjacent channel selectivity, which checks performance against signals on neighboring channels. For users, these requirements show whether the receiver can survive dense radio environments without losing the wanted link.

Clauses 4.5 to 4.7 cover spurious response rejection, intermodulation response rejection, and blocking or desensitization. These tests check behavior when strong unwanted signals are present away from the wanted channel. In practice, they are the main indicators of how robust the receiver is near other transmitters.

Social alarm systems

Annex A applies to social alarm systems in domestic or residential environments. It covers fixed, mobile, or portable transmitters working into fixed receivers, and it takes building losses, reflections, antenna patterns, and a typical distance into account. It also classifies effective radiated power into four levels and ties receiver requirements back to clause 4, so it is the part to consult when the application is personal safety or assistance alarms.

What terms does SIST EN 300 220-2 V1.2.1:2003 define?

• alarm - radio communication used to indicate an alarm condition at a distant location.
• conducted measurements - measurements made through a direct 50 ohm connection to the equipment under test.
• dedicated antenna - a removable antenna supplied and type tested with the radio equipment as an indispensable part of it.
• integral antenna - a permanent fixed antenna built into the equipment as an indispensable part of it.
• fixed station - equipment intended for use in one fixed location.
• portable station - equipment intended to be carried, attached, or implanted.
• telecommand - radio communication used to start, change, or stop equipment functions at a distance.
• telemetry - radio communication used to indicate or record data at a distance.

Who uses SIST EN 300 220-2 V1.2.1:2003?

SIST EN 300 220-2 V1.2.1:2003 is used by radio equipment manufacturers, test laboratories, and compliance engineers working on SRD products. It is also relevant to buyers and technical evaluators who need to compare receiver performance across alarms, identification devices, remote control equipment, and telemetry systems. Annex A is especially relevant to designers of social alarm systems.

What changed in SIST EN 300 220-2 V1.2.1:2003 from the previous edition?

SIST EN 300 220-2 V1.2.1:2003 is identified in the document history as the version published after ETS 300 220-2 edition 2 and the earlier 1993 edition. The foreword states that this part specifies supplementary parameters not intended for regulatory purposes and that Annex A provides specifications concerning social alarm systems.

Which standards are used with SIST EN 300 220-2 V1.2.1:2003?

• CEPT/ERC Recommendation 70-03 - gives the SRD frequency use framework referenced by the scope.
• ETS 300 113 - provides receiver measurement conditions for equipment with an antenna connector.
• ETS 300 390 - provides receiver measurement conditions for equipment using an integral antenna.
• ITU-T Recommendation 0.41 - defines the psophometric weighting network used in the SND/ND measurement.
• EN 300 220-1 - gives the spectrum-utilization requirements and the measurement method for ERP used in Annex A.

What does the SIST EN 300 220-2 V1.2.1:2003 document contain?

The document contains receiver test definitions, limit statements, and cross-references to measurement methods in related ETS standards. Table 1 gives average usable sensitivity limits by frequency range and antenna arrangement, while table 2 sets the adjacent-channel test conditions. Clause 4 also includes the formulas and procedures used to evaluate sensitivity and rejection performance. Annex A adds an application-specific power classification for social alarm systems and points readers to EN 300 220-1 for ERP measurement.