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INSTALLATION
At all times, installation procedures should follow good aviation installation practices as per FAA Advisory Circulars 43.13-1A Chapter 2
and 43.13-2A Chapter 11, and this manual. Because the P-1000 is installed and approved using a Supplement Type Certification
procedure, supplemental instructions specific to your aircraft are included with this tachometer.
These additional instructions take
precedence over this manual.
STATIC PRECAUTIONS
Proper operation of the P-1000 requires that all grounding straps to the engine block and instrument panel be in place. The magneto P-
Leads carry signals that are very prone to conduction into adjacent circuits/wires/metals. An adequate return path to the magneto must
be maintained to prevent interference with other electronics equipment.
Normally the P-1000's ground terminal for the power buss is adequate for this purpose, however, the wires connecting the P-1000 to the
magnetos are shielded, and those shields may be grounded at the magneto, or to the shields of existing P-Leads at the ignition switch.
Older aircraft may not employ shielding wire.
UNPACKING & INSPECTING THE EQUIPMENT
Exercise care when unpacking the P-1000. Make a visual inspection of the tachometer for any evidence of damage incurred during
shipping.
It is good practice to retain the shipping containers and packing materials if it should ever become necessary to return the P-1000 for
service, maintenance, or modification.
Save all packing slips, invoices, warranties, and manuals in a secure area for future reference.
The shipping container will need to be returned to Horizon Instruments, Inc. to substantiate any claims of damage due to shipment. Prior
to returning any product to Horizon instruments, Inc., please call for a return materials authorization number so that your product can be
properly and expediently tracked and processed.
Verify the RPM arc information placarded on the face of the P-1000 to correspond with the red, yellow and green arcs on the existing
mechanical tachometer, or to the engine/propeller manufacturer's specifications.
HORIZON INSTRUMENTS, INC.
P-1000 INSTALLATION & INSTRUCTION MANUAL
P103050
E
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