Tyco Electronics P5300 User Manual

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MM-008212-001, Rev. A 
80 
however, either data or voice is selected transparently by the operator through normal usage of the radio. 
Data communications is not supported in conventional mode.  
The radios can be connected to a Mobile Data Terminal (MDT) or to a host computer. Any RS-232 
compatible device that supports the Radio Data Interface (RDI) protocol (Version 1.91 or greater) may be 
connected to the radio. Support for MDTs or host computers is a programmable option per radio. 
Additionally, radios may also be programmed for data only operation (no voice calls transmitted or 
received). 
9.28.1 
Displays 
The following will be displayed during the various states of data mode of operation: 
TX DATA 
Appears on top line of display when the radio is transmitting a data call.  
RX DATA 
Appears on top line of display when the radio is receiving a data call.  
DATA OFF 
Appears on top line of display when the radio is in the data disabled state.  
DATA ON 
Appears for two seconds on top line of display when the radio is toggled to the data
enabled state.  
9.28.2 
DATA OFF Operation 
The radio can be placed in the data disabled state by any of the following methods. When the data state is 
disabled, 
DATA OFF
 appears on the top line of the display.  
• 
Declaring an emergency (not to be used unless an actual emergency condition exists). Alert tone will 
sound.  
• 
Pressing Option Button 1   (if pre-programmed as “no data” key). Alert tone will sound.  
• 
Pressing the pre-programmed “no data” (ND) key.  Refer to previous bullet. 
9.28.3 
DATA ON Operation 
The data state is enabled by one of the following (depending on how it was disabled). 
DATA ON
 will 
appear on the top line in the display for two seconds then the display will return to normal.  
• 
Pressing the pre-programmed “no data” (ND) key toggles data state ON or OFF.  
• 
Clearing an emergency. This is valid only if the emergency caused “DATA OFF” operation. 
9.28.4 
Exiting Data Cells 
Under normal conditions, the radio enters the scan lockout mode and returns to the control channel after 
completion of a data call (transmit or receive). If, during a data call, one of the following operations 
occurs, the data call is immediately terminated and the radio performs the desired function:  
• 
If the PTT is activated. 
• 
If an Emergency is declared by pressing the pre-programmed emergency button. 
• 
If a group or system is changed.