Spectra Engineering MX800 - 2.2.2 Setting to Work; 2.2.2.1 Setting Micro Controller Jumpers; Micro Controller Jumper Functions

Technical Manual Technical Description
© SPECTRA ENGINEERING 2006 Revision 4.2.3
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2.2.2 Setting to Work
The following sections describe the steps necessary to set the MX800 to
operate as required.
2.2.2.1 Setting Micro Controller Jumpers
The micro controller layout is contained in the drawing section and the
position of the jumpers and DIP switches (highlighted) are shown below. The
jumpers and switches are used for setting the general configuration of the
audio processing for both the TX and RX paths as well as various
miscellaneous functions.
Table 2-1 below summarises the functions of the jumpers.
JMP
Function / Description
Default
Selection
Default Position
JMP 1 Selects either default RUN or
EMULATE mode for the micro
processor.
Run 2-3
JMP 2 Enables the WATCHDOG auto
reset function in the
microprocessor.
Enabled 1-2
JMP 3 Enables or disables the PRE-
EMPHASIS for the TX audio.
Enabled 1-2
JMP 4 Enables or disables the
COMPRESSOR for the TX
audio.
Enabled 1-2
JMP 5 Enables or disables the HIGH
PASS FILTER for the RX audio.
Enabled 2-3
JMP 6 Enables or disables the LOW
PASS FILTER for the RX audio.
Enabled 2-3
JMP 7 Enables or disables the DE-
EMPHASIS processing for the
RX audio.
Enabled 2-3
JMP 8 Enables a direct connection to the
TX modulator. Select either
Wide Band or Wide Band filtered
and limited or nil.
DC-FM 1-2
JMP 9 TX VF Loopback control.
Trunking LIFUISEN function.
The function polarity or nil can be
selected.
Active low 1-2
JMP 10 Controls the direction of the RS-
232 TX and RX data.
Swap 2-3