Assembly Instructions

MXI1503-2004 CONTROL UNIT
PUB13-09 Rev 1 20
2.7.1 Remote
The operator has the option of allowing remote commands or disabling them. When performing some sort of
maintenance or local setups, the operator will usually disable any remote commands until the work on the transmitter is
completed. If the operator has elected to disable the remote mode, be careful not to forget to put the transmitter back
in Remote mode or else the remote controls will not be operational. The menu button options on the bottom line of the
LCD provide the controls to Enable/Disable remote controls.
 Lit when Remote commands are enabled.
 Not lit when Remote commands are disabled.
2.7.2 NewFmt
New Serial Format has been selected but not taken.
The operator has the option of changing the baud rate or number of stop bits for the serial RS232 communications. If a
change has been selected, it is not implemented until the operator presses the SAVE menu button on the LCD. This
status tells the operator that the recently selected format is different from the one currently being used for the serial
stream.
 Lit when there is a pending change in the serial format.
 Not lit when there is no serial format change or the selected format is the same as the current one.
2.7.3 ExtCmd
External Serial Command Received
The external remote control system can assert a command onto the individual remote inputs at J5. The MXi will set the
ExtCmd status if a valid command has been received. This is useful in detecting remote commands issued to the MXi
from the remote control system. This bit can be cleared by the CLR menu button on the LCD.
 Lit when an external serial command from J6 has been received.
 Not lit when no external serial command from J6 has been received since the last clear.
2.7.4 SerCmd
RS232 Serial Command Received
The external computer will send a four-byte serial stream of a specific format to ask for a certain action to be taken.
The MXi will set the SerCmd status if a valid command has been received. This is useful in detecting serial
transmissions between the external computer and the MXi. This bit can be cleared by the CLR menu button on the
LCD.
 Lit when a RS232 serial command from the computer has been received.
 Not lit when no RS232 serial command from the computer has been received since the last clear.