X09-009PKC-RA Digi International/Maxstream, X09-009PKC-RA Datasheet - Page 41

• Manufacturer Part Number: X09-009PKC-RA
• Description: MOD RF 900MHZ 9600BPS RS232/485
• Manufacturer: Digi International/Maxstream
• Series: XStream™r

Specifications of X09-009PKC-RA

• Function: Transceiver, FHSS
• Modulation Or Protocol: FHSS, FSK
• Frequency: 900MHz
• Applications: ISM
• Interface: RS-232, RS-485
• Sensitivity: -110dBm
• Power - Output: 20dBm (100mW)
• Data Rate - Maximum: 10 kbps
• Voltage - Supply: 7 V ~ 18 V
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

© 2006 MaxStream, Inc. Confidential & Proprietary
XStream‐PKG‐R™ RS‐232/485 RF Modem – Product Manual v5.x00 [2006.02.24]
5.1. Addressing
5.1.1. Address Recognition
Each RF packet contains addressing information that is used to filter incoming RF data. Receiving
modems inspect the Hopping Channel (HP parameter), Vendor Identification Number (ID
parameter) and Destination Address (DT parameter) contained in each RF packet. Data that does
not pass through all three network security layers is discarded [Figure 5.1].
Figure 5.1.
Transmissions can be addressed to a specific modem or group of modems using the DT
(Destination Address) and MK (Address Mask) parameters. The transmitting modem dictates
whether the packet is intended for a specific modem (local address) or multiple modems (global
address) by comparing the packet’s DT parameter to its own MK parameter [Figure 5.2].
Figure 5.2.
TX_DT = Transmitter Destination Address
TX_MK = Transmitter Address Mask
Note: When TX_DT = 0xFFFF (default), RF packets are global and are
received by all modems within range. (Receivers do not send ACKs.)
A receiving modem will only accept a packet if a packet is addressed to it (either as a global or
local packet). The RX modem makes this determination by inspecting the destination address of
the RF packet and comparing it to its own address and mask [Figure 5.3]. The Destination
Address of the TX modem is logically “ANDed” with the Address Mask of the RX modem.
Figure 5.3.
TX_DT = Transmitter Destination Address
RX_DT = Receiver Destination Address
RX_MY = Receiver Source Address
NOTE: For more information regarding addressing and masks, refer to Application Note ‘XST-
AN004b’. (Located on the MaxStream CD and on the web: www.maxstream.net)
Filtration layers contained in the RF packet header
Local Packets vs. Global Packets (Transmitting Modem)
Address Recognition (Receiving Modem)
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