User Manual

MXi AMPLIFIER CONTROLLER BOARD REV.2
PUB06-82 Rev 1 July 17, 2007 06-82-23 MXi Amplifier Controller Board Rev.2
from the individual J6 commands are not counted. The operator can uses this information along with the CNT value
from line #1 of the LCD to determine the source of the remote command. If the CNT increments but the RCNT does
not, then the recent remote command came from J6. If both the CNT and the RCNT increment, then the recent
remote command came from the RS232 stream.
The third line of the display has a number of status lights with a legend describing the particular status underneath
and all enclosed in a dashed line box. When the light is fully darkened, it indicates that this particular status is true or
active. When the light is hollow, it indicates that this particular status is false and inactive. Each status is detailed as
follows.
3.5.1 Remote
Remote Control Enable
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.
3.5.2 NewFmt
New Serial Format has been selected but not taken.
The operator has the option 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.
3.5.3 ExtCmd
External Serial Command Received
The external remote control system can assert a command onto the individual remote inputs at J6. 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.
3.5.4 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.