Vaisala PTB330 - Manual (Page 30)

USER'S GUIDE____________________________________________________________________
28 __________________________________________________________________ M210855EN-D
Signal and Power Supply Wiring
When wiring the power supply module, see section AC Power Supply
Module on page 32.
Figure 17 Screw Terminal Block on Motherboard
Numbers refer to Figure 17 above:
1 = Power control (0VDC = OFF, 5VDC = ON, if feature enabled)
2 = User port (RS-232 terminals)
3 = Power supply terminals 10 ... 36 V DC
4 = Test terminal (not connected, not used in PTB330)
5 = Probe cable shield (not used in PTB330)
6 = Probe bus (not used in PTB330)
7 = Probe power (not used in PTB330)
WARNING Make sure that you connect only de-energized wires.