Sandel ST3400, Installation Manual

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4.4 Electrical Installation Considerations
The installing agency fabricates and supplies all wiring harnesses. Refer to the
ST3400 Interconnect Wiring Diagrams for detailed wiring information and
appropriate notes.
Refer to the Functional Pinout Descriptions for explanations of pin functions.
1. The length and routing of wires must be carefully planned before starting the
installation.
•
Avoid sharp bends in the harness.
•
Do not locate the harness near aircraft controls.
•
Observe all recommended wire sizes and types and subscribe
to appropriate FAR Parts 23, 25, 27, and 29, as well as AC
43.13-1(B) and –2(A).
2. MIL-C27500 shielded wire and MIL-W-22759 single conductor wire is
recommended. The use of ferrules or grounding blocks for signal ground and
digital ground returns is satisfactory, however, each ground return must be
electrically separated.
3. In order to ensure optimum performance, the ST3400 and associated wiring
must be kept a minimum of three feet from high noise sources and not routed
with cables from high power sources.
4. Prior to installation, verify proper wiring by completing a point-to-point
continuity check of the wiring harness.
5. Use the Functional Pinout Descriptions to determine installation requirements.
6. Ground Bonding. In order to assure installation characteristics match the DO-
160 RF and Lightning test conditions, ensure that two ground wires of at least
the recommended size are installed in accordance with the installation
drawings and these wires are connected to a bonded aircraft ground.
7. Power Wiring. To assure that the ST3400 will operate properly down to its
rated minimum input voltage, ensure that two power wires of at least the
recommended size are connected in accordance with the installation drawings.
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ST3400 INSTALLATION MANUAL 82002-IM-L