X24-019PKC-UA Digi International/Maxstream, X24-019PKC-UA Datasheet - Page 14

• Manufacturer Part Number: X24-019PKC-UA
• Description: MODEM RF 2.4GHZ 19.2KBPS USB
• Manufacturer: Digi International/Maxstream
• Series: XStream™r

Specifications of X24-019PKC-UA

• Function: Transceiver, Modem
• Modulation Or Protocol: FHSS
• Frequency: 2.4GHz ~ 2.4835GHz
• Applications: General Purpose
• Interface: USB
• Sensitivity: -102dBm
• Power - Output: 17dBm (50mW)
• Data Rate - Maximum: 20 kbps
• Voltage - Supply: 5V
• Package / Case: Module
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

XStream‐PKG‐U™ USB RF Modem – Product Manual v4.2B5 [2006.02.27]
2.2.5. Command Mode
AT Command Mode
Enter AT Command Mode:
To Send AT Commands:
To Exit AT Command Mode:
To modify or read RF modem parameters, the RF modem must first enter into Command Mode -
a state in which incoming characters are interpreted as commands and parameters. Two
command types are available for programming the RF modem: AT Commands and Binary
Commands.
IMPORTANT: For modified parameter values to persist in the RF modem’s registry, changes must be
saved to non-volatile memory using the WR (Write) Command. Otherwise, parameter values are
restored to previously saved values the next time the RF modem is powered off and then on again.
1.
2.
The AT Command Mode Sequence (default parameter values are shown in parenthesis):
Send AT commands and parameters using the syntax shown below:
Figure 2‐08. Syntax for sending AT Commands
The preceding example would change the RF modem’s destination address to “1F”. To store the
new value to non-volatile (long term) memory, the Write (ATWR) Command must follow.
System Response. When a command is sent to the modem, the modem will parse and execute
the command. Upon successful execution of a command, the modem returns an “OK” message. If
execution of a command results in an error, the modem returns an “ERROR” message.
1.
2.
For examples that step through the programming the modem using AT Commands, refer to the
RF Modem Configuration [p16] chapter.
NOTE: To read a parameter value stored in a register, leave the parameter field blank.
© 2006 MaxStream, Inc. Confidential and Proprietary
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Send the 3-character command sequence “+++” and observe guard times before and after
the command characters. [Refer to “Default AT Command Mode Sequence” below.] The
“Terminal” tab (or other serial communications software) of the X-CTU Software can be used
to enter the sequence.
[OR]
Assert (low) the
achieve this result, simultaneously press the Reset and Config switches [Figure 1-02];
release the Reset Switch; then after 1 second, release the Config Switch. The RF Modem
then enters AT Command Mode at the modem’s default baud rate.
Send ATCN (Exit Command Mode) Command.
[OR]
If no valid AT Commands are received within the time specified by CT (Command Mode
Timeout) Command, the Modem automatically returns to Idle Mode.
Observe Guard Time Before (ATBT = 0x0A, no characters sent for one second)
Enter three copies of the Command Sequence Character (ATCC = 0x2B, ASCII “+++“)
Observe Guard Time After (ATAT = 0x0A, no characters sent for one second)
pin and turn the power going to the RF modem off and back on. To
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