7
Shield
+
_
TX
3
1
11
7
3) When shielded cable is used, it should be grounded at one
side only to avoid ground loop currents.
4) The input impedance is equal to:
< 5 W for 20 mA input
> 1 MW for 60 mV input
> 200 kW for 5 V input
> 400 kW for 10 V input
A.4) 2, 3 AND 4-WIRE TRANSMITTER INPUT
Fig. 7.A INPUTS WIRING FOR 2-WIRE TRANSMITTER
Fig. 7.B INPUTS WIRING FOR 3-WIRE TRANSMITTER
Shield
3
1
11
7
PWR
+
Out
TX
GND
Xkc-1-C0.P65 5/29/02, 11:59 AM7