SM55 Rev. 4.00 PTA12-100 POTS Telephone Adapter with Display Manual
Section 2 Installation
2.1 Introduction
Information in this section consists of: unpacking and inspection procedures, installation
procedures, post-installation checks, and installation drawings.
2.2 Unpacking and Inspection
Unpack the equipment carefully and locate the warranty card. Inspect the unit visually
for damage due to shipping and report all such claims immediately to the carrier
involved. Note that each unit should have the following:
- PTA12-100 POTS Telephone Adapter
- Warranty Card
- Operator’s Manual
- Release certification
Verify that all items are present before proceeding and report any shortage immediately
to your supplier.
Complete the warranty card information and send it to NAT when the installation is
complete. If you fail to complete the warranty card, the warranty will be activated on
date of shipment from NAT.
2.3 Installation Procedures
2.3.1 Warnings
Do not bundle any lines from this unit with transmitter coax lines. Do not bundle any
audio or DC power lines from this unit with 400 Hz synchro wiring or AC power lines. Do
not position this unit or wiring from this unit next to any device with a strong alternating
magnetic field such as an inverter, or significant audio interference will result.
2.3.2 Cautions
In all installations, use shielded cable exactly as shown and ground as indicated. Significant
ground loop and noise problems may result from not following these guidelines. Ensure
chassis is grounded to provide proper shield terminations.
Use caution when routing microphone wiring, as it is a low level signal prone to coupling
from other sources.
Do not take a ground from the instrument panel or similar location that shares a ground return
with a turn and bank, horizon or other motor driven instrument. This may cause the PTA12-
100 unit to pick up the sound of the motor as ground loop interference.
Sep 21, 2004 Page 2-1
ENG-FORM: 805-0107.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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