Teledesign Systems Inc TS4000EH Manuel D’Utilisation

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TS4000 Radio Modem User’s Manual  
Serial Port 
 
19 
Selection Description 
Available for Remote 
Diagnostics 
This option box cannot be set by the user. 
When this is checked it indicates that the remote 
diagnostics firmware option is enabled (see Remote 
Diagnostics).   
i) This function is an extra cost firmware option.  Please 
contact Teledesign for information on purchasing and 
enabling this option. 
ii) This function also requires version 5.00 or higher 
firmware. 
iii) Remote diagnostics also requires that AirNet packet 
operation is enabled (see AirNet Packet Protocol). 
 
The baud rate list provides selection of the serial port asynchronous baud rate.  
The serial port 2 baud rate is fixed at 9600 baud. 
 
The number of data bits for serial port 2 is fixed at eight. 
 
The parity of serial port 2 is fixed at no parity. 
 
 
Selection Description 
Data Activation 
This mode uses a character timer to frame the 
transmit data into bursts.  The TS4000 burst begins 
when one character (non-control string) is received.  
The transmit burst is completed when the transmit 
data line is idle (no data) for the number of 
character periods defined by the data activation 
timeout control. 
Timeout Time 
This control sets the number of character periods 
of idle required on the serial port's transmit data 
line to declare the end of a transmit burst. 
 
Char Period = Char Length / Baud Rate 
Where: Char Length = Data Bits + Parity + 2 
 
Data Bits is the value selected from the Data Bits 
control.  Parity is 0 if none is selected from the 
Parity control and 1 if even or odd is selected. The 
2 added to the accounts for the start and stop bits 
of an asynchronous character.  Baud Rate is the 
value selected from the baud rate list.   
 
This sets the minimum amount of time (in character periods) that the receive 
data (RXD) line will be idle (inactive) between received bursts of data.  If this 
value is set to zero, the receive data line may remain active continuously when 
multiple bursts of receive data are transferred to the host.   
If the DCD line option is set for the Active when Sending Receive Data to the 
User then the DCD line will also be inactive during the receive data line idle 
times. 
 
DCD is active when the TS4000 detects a signal on the radio channel.  This 
mode can be used to remote the receive light. 
 
 
Baud Rate List 
Data Bits 
Parity 
Transmit Data Protocol 
Receive Data Protocol – 
Idle Time Between Bursts 
DCD Line Control – Active 
when Radio Carrier 
Detected