X24-019WNC Digi International/Maxstream, X24-019WNC Datasheet - Page 33

• Manufacturer Part Number: X24-019WNC
• Description: MOD RF 2.4GHZ 19.2K W/WIRE ANT
• Manufacturer: Digi International/Maxstream

Specifications of X24-019WNC

• Frequency: 2.4GHz
• Data Rate - Maximum: 19.2kbps
• Modulation Or Protocol: FSK
• Power - Output: 17dBm
• Sensitivity: -110dBm
• Voltage - Supply: 5V
• Current - Receiving: 80mA
• Current - Transmitting: 150mA
• Data Interface: PCB, Through Hole
• Antenna Connector: On-Board, Wire Antenna
• Operating Temperature: 0°C ~ 70°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Memory Size: -

XStream™ OEM RF Module – Product Manual v5.x00 [2006.02.24]
SY (Time before Initialization) Command
TO (DO2 Timeout) Command
TR (Transmit Error Count) Command
<Networking & Security> SY Command keeps a
communication channel open as long as module
transmits or receives before the active connection
expires. It can be used to reduce latency in a
query/response sequence and should be set 100
ms longer than the delay between transmissions.
This command allows multiple XStream Modules
to share a hopping channel for a given amount of time after receiving data. By default, all
packets include an RF initializer that contains channel information used to synchronize any
listening receivers to the transmitter’s hopping pattern. Once a new module comes within range,
it is able to instantly synchronize to the transmitter and start receiving data. If no new modules
are introduced into the system, the synchronization information becomes redundant once
modules have become synchronized.
SY Command allows the modules to remove this information from the RF Initializer after the
initial synchronization. For example, changing the SY Parameter to 0x14 (20 decimal) allows all
modules to remain in sync for 2 seconds after the last data packet was received. Synchronization
information is not re-sent unless transmission stops for more than 2 seconds. This command
allows significant savings in packet transmission time.
Warning: Not recommended for use in an interference-prone environment. Interference can break up
the session and the communications channel will not be available again until SY time expires.
With SY set to zero, the channel session is opened and closed with each transmission - resulting
in a more robust link with more latency.
<Serial Interfacing>DO2 output will return to
default after no DI2 status information is
received during the timeout period.
Use with CS = 2 or 4.
<Diagnostics> Read number of retransmit
failures. The number of retransmit errors is
incremented each time a packet is not
acknowledged within the number of retransmits
specified by the RR (Retries) parameter. It
therefore counts the number of packets that were
not successfully received and have been dropped.
The TR parameter is not non-volatile and therefore is reset to zero each time the module is reset.
© 2006 MaxStream, Inc. Confidential and Proprietary
AT Command: ATTO
Binary Command: 0x31 (49 decimal)
Parameter Range: 0 – 0xFFFF [x 1 second]
Default Parameter Value: 3
Number of bytes returned: 2
Minimum Firmware Version Required: 4.30
AT Command: ATSY
Binary Command: 0x17 (23 decimal)
Parameter Range: 0 – 0xFF
Default Parameter Value: 0 (Disabled - channel
initialization info sent with each RF packet.)
Number of bytes returned: 1
AT Command: ATTR
Binary Command: 0x1B (27 decimal)
Parameter Range: 0 – 0xFFFF
Default Parameter Value: 0
Number of bytes returned: 2
Related Commands: RR (Retries)
Minimum Firmware Version Required: 4.22
[x 100 milliseconds]
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