X24-009PKC-UA Digi International/Maxstream, X24-009PKC-UA Datasheet - Page 19

• 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]
3.3. Command Descriptions
AT (Guard Time After) Command
BD (Interface Data Rate) Command
Commands in this section are listed alphabetically. Command categories are designated between
the “< >” symbols that follow each command title. XStream Modems expect numerical values in
hexadecimal and HEX values are designated by a “0x” prefix.
<Command Mode Options> AT Command is
used to set the time-of-silence that follows the
command sequence character (CC Command).
By default, AT Command Mode will activate after
one second of silence.
Refer to the AT Command Mode section [p14] to
view the default AT Command Mode Sequence.
<Serial Interfacing> BD Command allows the
user to adjust the UART I/O serial data rate and
thus modify the rate at which serial data is sent to
the modem. The new baud rate does not take
effect until the CN (Exit AT Command Mode)
Command is issued. Throughput and RF data
rates are not affected by the BD Command.
Although most applications will only require one of
the seven standard baud rates, non-standard
baud rates are also supported.
Note: If the serial data rate is set to exceed the
fixed RF data rate of the XStream modem,
flow control may need to be implemented as
described in the Pin Signals and Flow Control
sections of this manual.
Non-standard Interface Data Rates: When
parameter values outside the range of standard
baud rates are sent, the closest interface data
rate represented by the number is stored in the
BD register. For example, a rate of 19200 bps can be set by sending the following command line
"ATBD4B00". NOTE: When using MaxStream’s X-CTU Software, non-standard interface data rates
can only be set and read using the X-CTU ‘Terminal’ tab. Non-standard rates are not accessible
through the ‘Modem Configuration’ tab.
When the BD command is sent with a non-standard interface data rate, the UART will adjust to
accommodate the requested interface rate. In most cases, the clock resolution will cause the
stored BD parameter to vary from the parameter that was sent (refer to the table below).
Reading the BD command (send "ATBD" command without an associated parameter value) will
return the value that was actually stored to the BD register.
Table 3‐02. Parameter Sent vs. Parameter Stored
© 2006 MaxStream, Inc. Confidential and Proprietary
BD Parameter Sent (HEX)
1C200
12C
0
4
7
Interface Data Rate (bps)
115,200
115,200
19,200
1200
300
AT Command: ATAT
Binary Command: 0x05 (5 decimal)
Parameter Range: 0x02 – 0xFFFF
Number of bytes returned: 2
Default Parameter Value: 0x0A (10 decimal)
Related Commands: BT (Guard Time Before), CC
(Command Sequence Character)
AT Command: ATBD
Binary Command: 0x15 (21 decimal)
Parameter Range (Standard baud rates): 0 – 6
(Non-standard baud rates): 0x7D – 0xFFFF
Number of bytes returned: 2
Default Parameter Value: Set to equal to
modem’s factory-set RF data rate.
Minimum firmware version required: 4.2B
(non-standard baud rates not previously
supported)
Parameter
Value
0
1
2
3
4
5
6
BD Parameter Stored (HEX)
[x 100 milliseconds]
Configuration
1B207
BAUD (bps)
12B
0
4
7
19200
38400
57600
1200
2400
4800
9600
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