X24-009PKC-UA Digi International/Maxstream, X24-009PKC-UA Datasheet - Page 29

• Manufacturer Part Number: X24-009PKC-UA
• Description: MODEM RF 2.4GHZ 9600BPS USB
• Manufacturer: Digi International/Maxstream
• Series: XStream™r

Specifications of X24-009PKC-UA

• Function: Transceiver, Modem
• Modulation Or Protocol: FHSS
• Frequency: 2.4GHz ~ 2.4835GHz
• Applications: General Purpose
• Interface: USB
• Sensitivity: -110dBm
• Power - Output: 17dBm (50mW)
• Data Rate - Maximum: 20 kbps
• Voltage - Supply: 5V
• Package / Case: Module
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Features: -

XStream‐PKG‐U™ USB RF Modem – Product Manual v4.2B5 [2006.02.27]
TR (Transmit Error Count) Command
TT (Streaming Limit) Command
VR (Firmware Version) Command
WR (Write) Command
SY Command allows the modems to remove this information from the RF Initializer after the
initial synchronization. For example, changing the SY Parameter to 0x14 (20 decimal) allows all
modems 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.
<Diagnostics> TR Command records the number
of retransmit failures. This number is
incremented each time a packet is not
acknowledged within the number of retransmits
specified by the RR (Retries) Command. It
therefore counts the number of packets that were
not successfully received and have been dropped.
The TR Parameter is not non-volatile and will
therefore be reset to zero each time the modem is reset.
<Networking> TT Command defines a limit on
the number of bytes that can be sent out before a
random delay is issued. TT Command is used to
simulate full-duplex behavior.
If a modem is sending a continuous stream of RF
data, a delay is inserted which stops its
transmission and allows other modems time to
transmit (once it sends number of bytes specified
by TT Command). Inserted random delay lasts
between 1 & ‘RN + 1’ delay slots, where each delay slot lasts 38ms.
<Diagnostics> Read the Firmware Version of the
XStream Modem.
<(Special)> WR Command writes configurable
parameters to the modem’s non-volatile memory
(Parameter values remain in the modem’s
memory until overwritten by future use of WR Command).
If changes are made without writing them to non-volatile memory, the modem reverts back to
previously saved parameters the next time the modem is powered-on.
© 2006 MaxStream, Inc. Confidential and Proprietary
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
AT Command: ATTT
Binary Command: 0x1A (26 decimal)
Parameter Range: 0 – 0xFFFF (0 = disabled)
Default Parameter Value: 0xFFFF (65535
decimal)
Number of bytes returned: 2
Related Commands: RN (Delay Slots)
Minimum Firmware Version Required: 4.22
AT Command: ATVR
Binary Command: 0x14 (20 decimal)
Parameter Range: 0 – 0xFFFF [Read-only]
Number of bytes returned: 2
AT Command: ATWR
Binary Command: 0x08
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