Specifications

ETSI
Final draft ETSI EN 300 328 V1.8.1 (2012
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4.3.2.2.1 Definition
The Power Spectral Density is the mean equivalent isotropically radiated power (e.i.r.p.) spectral density during a
transmission burst.
4.3.2.2.2 Limit
For equipment using wide band modulations other than FHSS, the maximum Power Spectral Density is limited to
10 dBm per MHz.
4.3.2.2.3 Conformance
The conformance tests for this requirement are defined in clause 5.3.3.
4.3.2.3 Duty Cycle, Tx-sequence, Tx-gap
These requirements apply to non-adaptive equipment or to adaptive equipment when operating in a non-adaptive mode.
The equipment is using wide band modulations other than FHSS.
These requirements do not apply for equipment with a maximum declared RF Output power level of less than 10 dBm
e.i.r.p. or for equipment when operating in a mode where the RF Output power is less than 10 dBm e.i.r.p.
Medical devices requiring reverse compatibility with other medical devices placed on the market when earlier versions
of the present document were harmonised, are allowed to have an operating mode in which they do not have to comply
with the requirements for Duty Cycle, Tx-sequence and Tx-gap.
4.3.2.3.1 Definition
Duty Cycle is defined as the ratio of the total transmitter 'on'-time to a 1 second observation period.
Tx-sequence is defined as a period in time during which a single or multiple transmissions may occur and which shall
be followed by a Tx-gap.
Tx-gap is defined as a period in time during which no transmissions occur.
NOTE: The maximum Duty Cycle at which the equipment can operate, is declared by the supplier.
4.3.2.3.2 Limit
The Duty Cycle shall be equal to or less than the maximum value declared by the supplier.
The maximum Tx-sequence Time and the minimum Tx-gap Time shall be according to the formula below:
Maximum Tx-Sequence Time = Minimum Tx-gap Time = M
where M is in the range of 3,5 ms to 10 ms.
4.3.2.3.3 Conformance
The conformance tests for this requirement are (part of the procedure) defined in clause 5.3.2.
4.3.2.4 Medium Utilisation (MU) factor
This requirement does not apply to adaptive equipment unless operating in a non-adaptive mode.
In addition, this requirement does not apply for equipment with a maximum declared RF Output power level of less
than 10 dBm e.i.r.p. or for equipment when operating in a mode where the RF Output power is less than 10 dBm e.i.r.p.
Medical devices requiring reverse compatibility with other medical devices placed on the market when earlier versions
of the present document were harmonised, are allowed to have an operating mode in which they have a Medium
Utilisation above the limit defined in clause 4.3.2.4.2.