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Electrical connections
grounding and shielding
Readhead
Ti/TD interface
Inner shield
Outer shield
IMPORTANT: The outer shield should be connected to the machine earth (Field Ground).
The inner shield should be connected to 0 V. Care should be taken to ensure that the
inner and outer shields are insulated from each other. If the inner and outer shields are
connected together, this will cause a short between 0 V and earth, which could cause
electrical noise issues.
Recommended signal termination
Digital outputs
Interface
A B Z E+
Cable Z
A B Z E-
Extension cable
max. 50 m
dependent upon
output frequency
Customer
electronics
= 120R
120R
0
Standard RS422A line receiver circuitry
Analogue outputs
Customer
electronics
5 V
Output
signals
0 V
Remote CAL operation (Analogue versions only)
TD interface resolution switching
Pin 10
Single ended alarm signal termination (Options A, B, C, D)
V
V
V
+
0
1
2
120R
V
V
V
-
0
1
2
CAL
All Ti interfaces include a push button switch to enable CAL/AGC
features. Remote operation of the CAL/AGC is possible via pin 14
of analogue Ti0000 interfaces. For applications where no Ti interface
is used, remote operation of CAL/AGC is essential.
0 V
Connect Pin 10 to 0 V to
switch to lower resolution
0 V
5V
Customer
electronics
4k7
1k8
100
E-
4k7
100nF
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