Super Systems 20Q - Manual (Page 11)

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B) AUXILIARY INPUT B) AUXILIARY INPUT B) AUXILIARY INPUT B) AUXILIARY INPUT B) AUXILIARY INPUT
Fig. 8 AUXILIARY INPUT WIRING
NOTES NOTES NOTES NOTES NOTES:
1) This input is not isolated
not isolated not isolated not isolated not isolated from measuring input. A double or
reinforced insulation between instrument output and power
supply must be assured by the external instrument.
2) Don’t run input wires together with power cables.
3) Pay attention to the line resistance; a high line resistance may
cause measurement errors.
8
9
10
11
DIG. 1
DIG. 2
DIG. 3
Shield
_
+ mA
or
V
6
5
+
_
G
mA
or
V
5
6
4) When shielded cable is used, it should be grounded at one
side only to avoid ground loop currents.
5) The input impedance is equal to:
< 5 Ω for 20 mA input
> 200 k Ω for 5 V input
> 400 k Ω for 10 V input
C) LOGIC INPUT C) LOGIC INPUT C) LOGIC INPUT C) LOGIC INPUT C) LOGIC INPUT
Fig. 9 - LOGIC INPUTS WIRING
mkc-ssi.pmd 06/07/2004, 12.19 7