3.1.3 RF Characteristics
| Parameter | Condition | Range | Unit |
|---|---|---|---|
| Frequency band | — | 2.4000-2.4835 | GHz |
| Numbers of channels (North American) | — | 16 | — |
| Channel spacing | — | 5 | MHz |
| Transmitter output power | Adjusted in 7 steps | +2.6 to + 19.9 | dBm |
| Receiver sensitivity | PER = 1% | -105 | dBm |
| On-air data rate | — | 250, upto 2000 | Kbps |
| TX output/ RX input nominal impedance | For balanced |
50 | Ω |
| Range (2) | Open field, LoS and elevated | 1.96 | km |
| PHY_TX_PWR [3:0] Register Value | Power Register Setting [dBm] | Output Power [dBm] (Typical Values at RF Connector) |
|---|---|---|
| 0x0E | -12 | +10.8 |
| 0x0F | -17 | +4.1 |
Note:
- For more details, refer to the AT86RF233 Low Power, 2.4GHz Transceiver for ZigBee, RF4CE, IEEE 802.15.4, 6LoWPAN, and ISM Applications Data Sheet (8351).
- The range measured is Line of Sight (LoS) at 10 feet elevation from the ground at different combinations of orientation of transmitter and receiver, with special conditions were there is minimal or no RF interference from other sources. For best case orientation of the ZigBit modules to achieve maximum range, refer to the Antenna Orientation Recommendation.
- To ensure compliance, the following regional specific settings are to be
ensured:
-
FCC and IC Compliance:
- Operating the ZigBit module from channels 12-24 has no restrictions on the set power level.
-
Operating the ZigBit module at channel 11 requires a limitation of the TX output power to maximum +16 dBm, the power setting register value must be 0x0D or less.
-
Operating the ZigBit module at channel 25 requires a limitation of the TX output power to maximum +13 dBm, the power setting register value must be 0x0E or less.
- ETSI Compliance – Operating the ZigBit module in Europe requires setting the TX power to 0x0F for channels 11 and 26. All other channels can use a power setting of either 0x0E or 0x0F. This setting ensures compliance with ETSI EN 300 328 clause 4.3.2.2 Maximum Power Spectral Density.
-
| Channel | PHY_TX_PWR [3:0] Register Value | Typical Output Power [dBm] (at RF Connector) |
|---|---|---|
| 11 | 0xD or less | +16.0 |
| 12 | 0x0 | +21.4 |
| 13 | 0x0 | +21.4 |
| 14 | 0x0 | +21.4 |
| 15 | 0x0 | +21.3 |
| 16 | 0x0 | +21.3 |
| 17 | 0x0 | +21.3 |
| 18 | 0x0 | +21.3 |
| 19 | 0x0 | +21.3 |
| 20 | 0x0 | +21.3 |
| 21 | 0x0 | +21.3 |
| 22 | 0x0 | +21.3 |
| 23 | 0x0 | +21.2 |
| 24 | 0x0 | +21.1 |
| 25 | 0xE | +13.0 |
| 26 | 0xE or less | Restricted – Do not use in North America and
Canada Restricted – Refer note 2 for Europe |