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R A D I O F E A T U R E S
1) Data Encryption: Enables the Data Encryption Key. All CL4490s in the same network must have the
same encryption setting.
2) RTS Enable: Enables the Request To Send control line. When enabled, enables Hardware Flow Control.
3) Parity: Needs to be enabled if host requires even or odd parity and 8 data bits. This is considered as
9-bit mode. Note: Enabling Parity cuts the overall throughput into half.
4) Full Duplex: This mode restricts Client radios to transmitting on odd numbered frequency hop bins and
the Server to even numbered frequency hop bins. Though the RF hardware is still technically half duplex, it
makes the transceiver seem full duplex. This can cause overall throughputs to be cut in half. Note: All
transceivers on the same network must have the same setting for Full Duplex.
5) Modem Mode: Full modem handshaking is supported by the transceivers when Modem Mode is
enabled. Modem Mode is incompatible with RS-485Interface. Enables DCD, DTR, DSR and Ring Indicator
control lines.
P R O G R A M M I N G T H E C L 4 4 9 0 R A D I O
Connect a CL4490 unit to the serial communications port on the PC.
1
Connect the power supply to the CL4490 unit. Make sure the Pwr LED is on.
2
Start the Aerocomm Configuration Utility.
3
Select the COM Port that is connected to the CL4490 unit on the PC Settings page.
4
Select the Interface Baud Rate of the CL4490 unit. All CL4490 units are shipped with a default
5
rate of 57600 (unless units have been pre-configured to match specific serial settings). If the
Interface Baud Rate of the CL4490 unit is changed, the PC Setting Baud Rate must be set to the
same Baud Rate to allow proper programming of the units.
Select Read Radio to display the current settings of the CL4490 unit.
6
Change desired settings.
7
After all changes have been made, select Write Radio to save the changes.
8
Cycle Power to the unit after all changes has been saved. This will set the CL4490 unit to its
9
normal mode of operation.
Note: The Show Defaults button can be used to display the default Radio settings.
DESIGN TIP
The Aerocomm Configuration utility automatically programs the mode (point-to-point or point-
to-multipoint) based on the radio's current settings:
If the Destination Address field is set to any value other than FF FF FF FF FF FF, the
1
radio will send data only to the radio whose MAC matches that specified in the
Destination Address field (point-to-point).
If the Destination Address field is set to FF FF FF FF FF FF on a client radio, it will be set
2
to auto destination mode & transmit to the radio whom it last received a packet from.
If the Destination Address field is set to FF FF FF FF FF FF on a server radio, it will be
3
set to Broadcast mode & transmit to all available clients (point-to-multipoint).
C H A P T E R 5 - C O N N E X L I N K S E T T I N G S
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1 - 8 0 0 - 4 9 2 - 2 3 2 0
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