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not be activated in a radio until the system manager sends an activation message. Each radio that receives 
and acknowledges the regrouping instructions is successfully regrouped.  
Pressing and holding the 
 button for 2.5 seconds toggles the user into and out of the dynamic regroup 
groupset. A double beep will sound for entry or exit. The display will indicate REGRP_0x where "x" is a 
digit of 1 to 8 indicating the group (when dynamic regroup has been enabled by the user). If the radio is in 
dynamic regroup and the user selects a group that has not been regrouped, the display will show NO 
ENTRY. The radio will be prevented from transmitting and receiving calls in this condition except for 
scanned groups.  
After the time-out expires or the 
 key has been pressed (the   key will override the time-out 
period), the status is selected and will be transmitted to the site or stored in the radio memory where it can 
be polled by the site at a future time. 
8.26.1 Emergency Operation  
If the pre-programmed groupset on the currently selected system contains an EMER/HOME group and 
the radio is in dynamic regroup, the radio will declare the emergency on the currently selected dynamic 
group. 
8.27 MACRO KEY OPERATION 
Macro key operation permits the user to accomplish a series of keystrokes with a single "macro" 
keystroke. Each Macro Key is capable of executing up to twenty (20) keystrokes, to any push button input 
(i.e., keypad keys, OPTION buttons, etc.). Each macro key can be pre-programmed to activate when 
pressed or when released.  
A macro key may also be pre-programmed to change the key stroke sequence the next time the macro key 
is activated.  
For detailed operation and assignment of macro keys, contact your communications supervisor or 
administrator. 
8.28 PORTABLE DATA 
The P5400 series portable radios, when operating in the EDACS Trunked configuration, permit both 
voice and data calls to be transmitted and received. The radio can handle only one type of call at a time; 
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). 
8.28.1 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.