Nautel NX3, Installation Manual

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NX5/NX3 INSTALLATION MANUAL INSTALLING AUDIO INPUTS
VERSION 3.1 2021-04-22 PAGE 2.6.1
SECTION 2.6: INSTALLING AUDIO INPUTS
This section describes how to route audio input wiring to the NX5/NX3’s exciters.
Planning Complete?
1. Make sure you have read and fully understood the audio input options described in the
NX5/NX3
Pre-installation Manual
before proceeding.
2. Make sure the audio input wires are long enough to allow routing through the top of the
transmitter cabinet and down to the exciter panel.
Routing Cables and Connecting Audio Inputs
1. Route all audio cables from their audio sources to the top of the NX5/NX3. Two possible entry
holes are provided to accept audio input wiring (see
Figure 2.6.1 on page 2.6.3 ).
2. Punch the appropriate size hole in the desired audio entry plate as follows (see Figure 2.6.1 on
page 2.6.3 ):
– Remove the left-hand or right-hand entry plate from the top of the transmitter. Each is secured
using two M4 screws and has a pre-cut, centered 1/4-inch diameter hole.
– Use a chassis punch tool (e.g., Greenlee, etc.) to punch the desired size hole in the entry plate.
Make sure the audio input cables will pass safely through the hole. If necessary, you can remove
the plate completely to gain access to a smaller, rectangular hole.
– Install a conduit termination on the entry plate, if desired.
– Re-install the entry plate on top of the transmitter using two M4 screws.
3. Obtain two ferrite toroids (one each of Nautel Part # LXP38 and LXP44) from the ancillary kit.
4. Pass all audio input cables through the ferrite toroids obtained in Step 2 . If practical, wires should
pass through a minimum of two times (two turns) (see Figure 2.6.2 on page 2.6.3 ). Position the
ferrite toroids just outside, or just inside, the audio input entry hole.
5. Route the audio input cables through the selected entry hole and toward the exciter panel, located
behind the front door (see
Figure 2.6.3 on page 2.6.4 ). If possible, install exciter mating connectors
after passing cables through the entry hole. Route all wiring from the top of the cabinet to the
hinged side of the exciter panel to allow the panel to open.