MXD5U OPERATIONS AND MAINTENANCE
E2
Not used in the MXD5U transmitter
Setting = no jumper installed
E3
Not used in the MXD5U transmitter
Setting = no jumper installed
E4
Not installed in this assembly
E5
Front Panel ON/OFF button Mode
This jumper determines the function of the Front Panel ON/OFF button
If E5 is in the ‘INT’ position, Remote ON/OFF Controls are disabled, Local Controls Only
If E5 is in the ‘EXT’ position, Remote ON/OFF Controls are enabled, Local OFF Control Only
More detail on this function is given in Section XX of this manual
Setting = EXT for all MXD5U transmitters
E6
Transmitter Switching Interlock
This may have either a two pin header or may be permanently jumpered with bus wire
If there is a two pin header, then it requires a shorting jumper
If this is not shorted, then the transmitter will not turn ON.
Setting = Jumper installed
E7
Not used in the MXD5U transmitter
Setting = no jumper installed
E8
Not installed in this assembly
E9
Not installed in this assembly
E10
Not installed in this assembly
E11
Forward Power Sample Gain
Sets either High or Low gain from the DC sample received from the RF coupler
Set to obtain a voltage between 4.5 and 8V at TP2 for full power RF output
Can be either in the HI or LO position depending on channel and RF coupler
Typical Setting = LO for most MXD5U transmitters
E12
Not installed in this assembly
E13
Not installed in this assembly
E14
Not installed in this assembly
E15
Reflected Power Sample Gain
Sets either High or Low gain from the DC sample received from the RF coupler
Set to obtain a voltage between 4.5 and 8.0V at TP4 for 10% reflected power
Can be either in the HI or LO position depending on channel and RF coupler
Typical Setting = HI for most MXD5U transmitters
E16
AGC Disable
This jumper disables the AGC circuitry
DO not install this jumper. It is meant for factory setup
Setting = not Installed for all MXD5U transmitters
PUB09-03 Rev 0 April 16, 2009
09-03-3
MXD5U Operations and Maintenance
