Computime Limited CT-EM2506 ユーザーズマニュアル
CT-EM2506
ZigBee Ready RF Transceiver Modules
Computime Ltd. All rights reserved
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Page 11 of 16
15. RF Frequency, Output Power Levels and Data Rates
The following table shows the RF channels as defined by the IEEE 802.15.4
RF channel
Frequency
11 2405MHz
12 2410MHz
13 2415MHz
14 2420MHz
15 2425MHz
16 2430MHz
17 2435MHz
18 2440MHz
19 2445MHz
20 2450MHz
21 2455MHz
22 2460MHz
23 2465MHz
24 2470MHz
25 2475MHz
26 2480MHz
The output power level of EM250 can be configured in the range -32 to 3dBm and the
gain of FEM is 17dB, So the module output can controlled in range -15 to 20dBm. The RF
transceiver uses direct sequence spread spectrum (DSSS) with a raw data rate of 250
kbit/s. The modulation format is Offset – Quadrature Phase Shift Keying (O-QPSK). It is
robust even under noisy environments when sharing the same frequency band with other
applications.
Note: The output power of EM250 should be configured lower than -19dBm for
the channel 2480MHz to comply FCC.
The use of RF frequencies and maximum allowed RF power should according to different
national regulations. The CT-EM2506 is complying with the applicable regulations for the
world wide 2.4GHz ISM band.
[Subject to final approval: Specifically it complies with the European Union R&TTE directive
meeting EN 300 328 and EN300 440 class 2. It also meets the FCC CFR47 Part15 regulations for use
in the US and the ARIB T-66 for use in Japan.]
meeting EN 300 328 and EN300 440 class 2. It also meets the FCC CFR47 Part15 regulations for use
in the US and the ARIB T-66 for use in Japan.]