LAUREL LT Series, User Manual, Page: 38 / 56

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12. MAIN BOARD JUMPER SETTINGS
Serial Signal Duplex Jumpers Termination Resistor*
RS485
Full None
E6 a = Transmit
E6 c = Receive
Half E6 b + d** E6 c
RS232 Full None None
* The termination resistor jumper settings should only be selected if the transmitter is the last
device on an RS485 line longer than 200 feet (60 m).
** Or connect external BTX to BRX and ATX to ARX (same effect as internal jumpers).
To reset communications to 9600 baud, command mode, Custom ASCII protocol, and Address 1,
place a jumper at E1 and power up the transmitter.
Analog Output J4 Pins Jumpers
Current, 4-20 mA 1 Lo, 2 Hi E2 a + d
Voltage, 0-10V 1 Lo, 2 Hi E2 b + c
Voltage, -10V to +10V 3 Lo, 2 Hi E2 b + c
Jumper settings are for CTR main board Rev J
Excitation Output* Jumpers
5V, 100 mA E3 a + c; E4 a
10V, 120 mA E3 a + c; E4 b
24V, 50 mA E3 b, E4 none
* Attempting to draw more than the rated excitation output current will shut down the output.