Transmitter parameters

AN4117

12/22

Doc ID 023222 Rev 1

Figure 11.

Spectral mask measurement, 100 kHz channel spacing, 38.4 Kbps data

rate, 20 kHz frequency deviation, GFSK (BT=1) modulation

Figure 12.

Spectral mask measurement, 500 kHz channel spacing, 250 Kbps data

rate, 127 kHz frequency deviation, GFSK (BT=1) modulation

2.3

Unwanted emissions in the spurious domain

Spurious emissions are unwanted emissions in the spurious domain at frequencies other

than those of the wanted carrier frequency and its side-bands associated with normal test

modulation.

A spectrum analyzer is used as external receiver. The measurement is performed setting

the SPIRIT1 with modulation and checking unwanted spurious emissions up to 4 GHz, as

described in ETSI [2] subclause 7.8.