Vaisala DMP248 Service Manual Page 128

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APPENDIX 4 ________________________________________________________________________
122 ____________________________________________________________________ U263EN-1.4
Check that the transmitter responds to its address:
send 22
Td= -47.4 ’C T= 29.1 ’C
Disconnect the terminal.
Remount the digital current loop module.
Close the cover.
When all transmitters on the network have been
configured, switch them off.
Dual loop operation
Single pair/dual pair use is configured through wiring (see figure on
page 2).
The following procedure must be repeated with all transmitters.
Open the transmitter cover.
Pull out the digital current loop module, if it is already
mounted.
Set the serial port of the terminal to 4800 baud, even
parity, seven data bits and one stop bit, full duplex (4800 E 7 1 FDX).
The serial settings of the transmitter must also be 4800 E 7
1 FDX and the transmitter must be in STOP mode. If these factory
settings have been changed, they must be changed back. Connect the
RS 232C port of the terminal to connector X17 on the top of the main
board and switch the power on.
RX GND TX
X17
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