參數(shù)資料
型號: OL2381AHN
廠商: NXP Semiconductors N.V.
元件分類: 微波射頻器件
英文描述: Highly Integrated Single Chip Sub 1-GHz RF Transceiver
封裝: OL2381AHN<SOT617-3 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-3.html<1<Always Pb-free,;
文件頁數(shù): 8/43頁
文件大小: 2978K
代理商: OL2381AHN
AN11017
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Application note
Rev. 2 — 10 May 2011
8 of 43
NXP Semiconductors
AN11017
Transceiver OL2381 using wireless M-BUS
2.4 Wireless M-Bus mode T1
Table 4.
Title
Application
Sending rate
Center Frequency
FSK Deviation
Data Encoding
Chip Rate
Preamble
[1]
All values provided are typical values unless otherwise stated.
2.5 Wireless M-Bus mode T2
Table 5.
Title
Application
Sending rate
Center Frequency
[1]
All values provided are typical values unless otherwise stated.
Meter unit transmits on a regular basis similar to Type T1. Its receiver is enabled for a
short period after the end of each transmission and locks on if an acknowledge is received
(at 32.768 kchip/s). Further bidirectional communication in the 0.1 % frequency band
using 100 kchip/s (meter transmit) and 32.768 kchip/s (meter receive) can follow.
Fig 5.
Mode T1
Mode T1
Description
[1]
frequent transmission, short telegrams
same as S1/S1-m, depending on the mode used
868.95 MHz
(±40 kHz to ±80 kHz)
3 out of 6
100 kchip/s (data rate = 66.67 bps)
short header (48 chips)
019aab757
Collector
Stationary or Mobile
Receiver
Meter
Mode T1
T
link
Fig 6.
Mode T2
Mode T2
Description
[1]
frequent transmission, bidirectional
short data burst <5 ms every few seconds
868.95 MHz (T)
868.30 MHz (S)
(±40 kHz to ±80 kHz)
3 out of 6 (T) / Manchester (S)
100 kchip/s (T) / 32.768 kchip/s (S)
short header (48 chips)
3 ms
FSK Deviation
Data Encoding
Chip Rate
Preamble
Response delay
019aab758
Collector
Stationary or Mobile
Transceiver
Meter
Mode T2
T
link
S
link
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