Vaisala PTB220 Series Guide de l'utilisateur télécharger pdf (Page 96)

USER'S GUIDE_______________________________________________________________________

90 ___________________________________________________________________ M210194EN-A

9. Remember to restore the dip switch SW4 (OFF).

NOTE

Entering new linear corrections will always cancel the previous

corrections. It is advisable to write down the factory set linear

corrections so that they will not be lost by mistake.

NOTE

When using the analog output, the corrections are performed only if

the LC is activated (see LC command on page 59)

Pin assignment

In barometers with RS232/analog output, the pin assignment is as

follow.

PIN SIGNAL

1 TX with diode

2 TX/TXD/TXD inverted

3 RX/RXD/RXD inverted

4 external power on/off control

5 ground for the RS 232C

6 voltage output (0...5 VDC) / current output (4...20 mA)

7 ground for supply voltage

8 voltage output ground / current output ground

9 supply voltage (10...30 VDC)

Load resistance for the voltage output is 10...500 kΩ and for the

current output it is 0...500 Ω.

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Vaisala PTB220 Series Guide de l'utilisateur Page 96