Super Systems 20Q - Manual (Page 9)

5
Shield
+
_
TX
3
1
11
7
A.3) LINEAR INPUT A.3) LINEAR INPUT A.3) LINEAR INPUT A.3) LINEAR INPUT A.3) LINEAR INPUT
Fig. 6 mA, mV AND V INPUTS WIRING
NOTES NOTES NOTES NOTES NOTES:
1) Don’t run input wires together with power cables.
2) Pay attention to the line resistance; a high line resistance may
cause measurement errors.
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 Ω for 20 mA input
> 1 M Ω for 60 mV input
> 200 k Ω for 5 V input
> 400 k Ω for 10 V input
A.4) 2, 3 AND 4-WIRE TRANSMITTER INPUT A.4) 2, 3 AND 4-WIRE TRANSMITTER INPUT A.4) 2, 3 AND 4-WIRE TRANSMITTER INPUT A.4) 2, 3 AND 4-WIRE TRANSMITTER INPUT A.4) 2, 3 AND 4-WIRE TRANSMITTER INPUT
Fig. 7.A INPUTS WIRING FOR 2-WIRE TRANSMITTER
Shield
_
+
mA,
mV
or
V
3
1
+
_
G
mA
mV
or
V
1
3
mkc-ssi.pmd 06/07/2004, 12.19 5