A24-HASM-450 Digi International/Maxstream, A24-HASM-450 Datasheet - Page 38

• Manufacturer Part Number: A24-HASM-450
• Description: ANT 2.4GHZ DIPOLE HALF-WAVE
• Manufacturer: Digi International/Maxstream
• Series: XPressr

Specifications of A24-HASM-450

• Antenna Type: Whip: 1/2 Wave, Swivel, Tilt (Right Angle)
• Number Of Bands: 1
• Frequency: 2.4GHz
• Vswr: 2
• Gain: 2.1dBi
• Termination: RP-SMA
• Mounting Type: Connector
• Height (max): 4.35" (110.5mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 70000340; Q2724499B

XBee/XBee‐PRO ZigBee OEM RF Modules v1.x1x [2007.06.01]
Identifies the UART data frame for the host to
correlate with a subsequent ACK (acknowledgement).
If set to ‘0’, no response is sent.
Identifies the UART data frame for the host to
correlate with a subsequent ACK (acknowledgement).
If set to ‘0’, no response is requested.
AT Command
AT Command - Queue Parameter Value
Start Delimiter
API Identifier Value: 0x08
Allows for module parameter registers to be queried or set.
Figure 6‐10. AT Command Frames
Figure 6‐11. Example: API frames when reading the NJ parameter value of the module.
Figure 6‐12. Example: API frames when modifying the NJ parameter value of the module.
A string parameter used with the NI (Node Identifier), ND (Node Discover) and DH (Destination
Address High) command is terminated with a 0x00 character.
API Identifier Value: 0x09
This API type allows module parameters to be queried or set. In contrast to the “AT Command” API
type, new parameter values are queued and not applied until either the “AT Command” (0x08) API
type or the AC (Apply Changes) command is issued. Register queries (reading parameter values)
are returned immediately.
Figure 6‐13. AT Command Frames
* Length [Bytes] = API Identifier + Frame ID + AT Command
** “R” value was arbitrarily selected.
Start Delimiter
© 2007 Digi International, Inc.
* Length [Bytes] = API Identifier + Frame ID + AT Command + Parameter Value
** “M” value was arbitrarily selected.
Start Delimiter
Start Delimiter
Byte 1
0x7E
Byte 1
0x7E
0x7E
0x7E
Frame ID (Byte 5)
Frame ID (Byte 5)
(Note that frames are identical to the “AT Command” API type except for the API identifier.)
0x00
0x00
Bytes 2-3
MSB
MSB
Length*
Bytes 2-3
Length*
Length
Length
0x04
0x05
LSB
LSB
API Identifier
API Identifier
0x08
0x09
API Identifier
API Identifier
API-specific Structure
API-specific Structure
Byte 4
0x08
Byte 4
0x08
Frame Data
Frame Data
Identifier-specific Data
Command Name - Two
ASCII characters that
identify the AT Command.
Identifier-specific Data
Command Name - Two
ASCII characters that
identify the AT Command.
AT Command (Bytes 6-7)
AT Command (Bytes 6-7)
Frame ID**
cmdData
0x52 (R)
cmdData
Frame ID**
0x4D (M)
Byte 5
Byte 5
Checksum
Checksum
1 Byte
1 Byte
0x4E (N) 0x4A (J)
0x4E (N) 0x4A (J)
AT Command
AT Command
Bytes 6-7
Bytes 6-7
If present, indicates the requested parameter
value to set the given register.
If no characters present, register is queried.
If present, indicates the requested parameter
value to set the given register.
If no characters present, register is queried.
Parameter Value (Byte(s) 8-n)
Parameter Value (Byte(s) 8-n)
Checksum
Parameter Value
Byte 8
Chapter 6 ‐ API Operation
0x0D
Bytes 8
0x40
Checksum
Byte 9
0xD2
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