Spectra Engineering MX800 - Micro Controller Jumper Settings; JMP 11-19 Functions; JMP 22-27 Functions

MX800 Transceiver Technical Manual
© SPECTRA ENGINEERING 2006 Revision 4.2.3
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JMP 11 Controls the direction of the RS-
232 TX and RX data.
Swap 2-3
JMP 12 Trunking RX Talk function.
Disables RX VF to line and TTR
VF. The function polarity or nil
can be selected.
Active low 1-2
JMP 13 Enables or disables the HIGH
PASS FILTER for the TX audio.
Enabled 1-2
JMP 14 Repeater enable. Trunking
LIFULOCEN function. The
function polarity or nil can be
selected. Note that this control is
in parallel with DIP S/W 2/3
Active low 1-2
JMP15 Selects the connection for the
common pin on the digital I/O
connector to either ETH or + 5
volts.
ETH 2-3
JMP16 Enables or disables the Low
frequency HPF used for the
Repeater VF routing.
Enabled 1-2
JMP17 Selects the Mute / Squelch output
polarity to either normally high or
low.
Active low 1-2
JMP 18 Trunking TX Talk function.
Disables TX VF to line and TTR
VF. The function polarity or nil
can be selected.
Active low 1-2
JMP 19 Selects either internal pull up to
5V or internal pull down to ETH
for digital input on D25 connector
Pull up 2-3