AC4490 User Guide
Version 4.5
Laird Connectivity Solutions Support Center:
http://ews-support.lairdtech.com
13
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Europe: +44-1628-858-940
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Auto Calibration (Forced Recalibration)
When enabled, Auto Calibrate causes the radio to measure the temperature every 30 to 60 seconds. If the
temperature changes more than 30ºC from the last calibration, the radio will initiate a recalibration.
During the recalibration, the radio will not assert CTS high. Recalibration can take up to 3 seconds and the
command response will not be sent to the OEM Host until recalibration is complete.
Note: If Auto Calibration is
disabled
, the CL4490 radio may fail to lock onto frequency. If it does, the
radio timeouts after 5 ms and performs a recalibration.
Command: <0xCC> <0x12> <0x00> <0x00>
Number of Bytes Returned: 3
Response: <0xCC> <Version> <Status>
Parameter Range: <Version> = Firmware version of radio
<Status> = 0x00: Server in range
0x01: Client in range
0x02: Server out of range
0x03: Client out of range
Auto Destination/Auto Channel
The Host issues this command to change the Auto Destination & Auto Channel settings. When issuing this
command, the Auto Destination/Auto Channel settings is only changed if the corresponding enable bit is set.
Command: <0xCC> <0x15> <Auto Dest>
Number of Bytes Returned: 2
Response: <0xCC> <Auto Dest>
Parameter Range:
<Auto Dest>= bit 7: Ignored
bit 6: Ignored
bit 5: Enable Auto Chan. Modification
bit 4: Enable Auto Dest. Modification
bit 3: Ignored
bit 2: Ignored
bit 1: Auto Channel
bit 0: Auto Destination
