SM1211E915TOPIC Semtech, SM1211E915TOPIC Datasheet - Page 87

• Manufacturer Part Number: SM1211E915TOPIC
• Description: KIT PICTAIL EXT FOR SX1211
• Manufacturer: Semtech
• Type: Transceiver, UHFr

Specifications of SM1211E915TOPIC

• Frequency: 915MHz
• For Use With/related Products: SX1211
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 82 shows the minimal spectral occupation achievable in the European band, keeping in mind that the
minimum frequency deviation that a SX1211 receiver can accept is 33 kHz. If the companion receiver can bear
smaller frequency deviations, the range of modulation bandwidth can be further decreased.
The default configuration of the SX1211 yields the bandwidth visible on Figure 83:
Figure 84 shows the maximal bit rate and frequency deviation that can fit in the 868 to 868.6 MHz European sub-
band:
Rev 7 – Sept 2
ADVANCED COMMUNICATIONS & SENSING
7.6.12. FSK Spectrum in Europe
nd
, 2008
Figure 82: FSK - 1.56kbps - +/-33 kHz
Figure 83: FSK - 25 kbps - +/-50 kHz
Figure 84: FSK - 40 kbps - +/-40 kHz
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