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9XTend ‐ PKG ‐ E? ? Ethernet ? RF ? Modem ? – ? Product ? Manual ? v2.x4x ? [2007.01.04]
RN (Delay Slots) Command
<Networking & Security> The RN command is
used to set/read the time delay that the transmit-
ting RF modem inserts before attempting to
resend a packet. If the transmitting modem fails
to receive an acknowledgement after sending a
packet, it inserts a random number of delay slots
(ranging from 0 to (RN minus 1)) before attempt-
ing to resend the packet. Each delay slot is 5
msec (when BR=1) and 54 msec (when BR=0).
If two modems attempt to transmit at the same
AT Command: ATRN
Binary Command: 0x19 (25 decimal)
Parameter Range: 0 - 0xFF [38 ms slots]
Default Parameter Value: 0
(no delay slots inserted)
Number of bytes returned: 1
Related Commands: RR (Retries), TT
(Streaming Limit)
time, the random time delay after packet failure allows only one modem to transmit the packet
successfully; while the other modem waits until the channel available for RF transmission.
RN Command is only applicable if retries have been enabled [RR (Retries) Command] or if forced
delays will be inserted into a transmission [TT (Streaming Limit) Command].
RO (Packetization Timeout) Command
<Serial Interfacing> The RO command is used to
set/read the Packetization Timeout setting. RF
transmission begins when data is in the DI buffer
and either of the following criteria are met:
? RO character times of silence on the UART
receive lines (after receiving at least 1 byte)
? RB characters have been received by the
UART
RB and RO criteria only apply to the first packet of
a multi-packet transmission. If data remains in
AT Command: ATRO
Binary Command: 0x21 (33 decimal)
Parameter Range: 0 - 0xFFFF
[ x UART character times ]
Default Parameter Value: 3
Number of bytes returned: 2
Related Commands: RB (Packetization
Threshold)
the DI Buffer (UART receive) after the first packet, transmissions will continue in a streaming man-
ner until there is no data left in the DI Buffer.
When RO is the transmission-beginning criteria : The actual time between the reception of
the last character from the UART and the beginning of RF transmission will be at least 800 μsec
longer than the actual RO time to allow for transmission setup. Additionally, it is subject to 100-
200 μsec of additional uncertainty, which could be significant for small values of RO at high UART
bit rates.
The correct UART character time (10, 11, or 12 bits) is calculated based on the following criteria:
? 1 start bit
? 8 data bits
? 0 or 1 parity bit [as determined by the NB (Parity) Command)
? 1 or 2 stop bits [as determined by SB (Stop Bits) Command]
? ? 2007 ? MaxStream, ? Inc., ? Confidential ? & ? Proprietary ?‐? All ? Rights ? Reserved ?
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相关代理商/技术参数
XT09-PKI-E-NA
功能描述:射频模块 9XTend 1W Ethernet w/o accessories Intl
RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
XT09-PKI-R
功能描述:射频模块 9XTend 1W RS232/485 w/o accessories
RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
XT09-PKI-RA
功能描述:射频模块 900MHz - Xtend software setable
RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
XT09-PKI-RA-NA
功能描述:射频模块 9XTend 1W RS232/485 w/accessories no AES
RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
XT09-PKI-RDA
功能描述:射频模块 XTend-PKG 900 MHz IndRS-232class1/div2
RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
XT09-PKI-R-NA
功能描述:射频模块 9XTend 1W RS232/485 w/o accessories Intl
RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
XT09-PKI-R-NL
制造商:Digi International Inc 功能描述:MODEM RF 900MHZ 9600/11
XT09-PKT-R
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