Vaisala PTB220 User Manual download pdf (Page 16)

USER'S GUIDE_______________________________________________________________________

10 ___________________________________________________________________ M210194EN-A

The factory settings of the PTB220 series barometers are the

following:

TABLE 3-1 Serial interface factory settings

Baud rate 9600

Parity even

Data bits 7

Stop bits 1

Duplex full duplex

After having made the electrical connections, switch the power on,

and the barometer responds indicating the barometer type and the

software version.

PTB220 / 2.02

The barometer is now ready to respond to any command, for example

to commands R, S or SEND (see page 43).

If there is a LCD display cover, at power-up the display will first show

the barometer type and the software version. Then it switches to

display the barometric pressure reading as defined with the DFORM

command. The keyboard of the display cover can be used to inspect

and change the parameters available (see page 51).

Should there be any problems please check the jumper settings in

connector X15 and the settings in dip switch S1 inside the barometer.

The settings should be as indicated in the figures below.

TXD

RXD

X15

RX/RXD

TXD

OFF

SW1

SW2

SW3

SW4

SW5

SW6

SW7

SW8

FIGURE 3-3 Basic RS 232C jumper and dip switch S1 settings

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Vaisala PTB220 User Manual Page 16