Nautel NV15LT, Installation Manual

Page: 37 / 78

NV20LT/NV15LT INSTALLATION MANUAL INSTALLING THE RF FEED CABLE
VERSION 4.0 2018-02-26 PAGE 2.6.1
SECTION 2.6: INSTALLING THE RF FEED CABLE
Prepare and install an RF feed coaxial cable as follows:
NOTE
: Nautel recommends that you perform the commissioning procedure in Section 2.9,
“Commissioning”Section 2.9, “Commissioning” , which connects the transmitter to a dummy load,
before connecting the transmitter to its antenna system.
1. Make sure the transmitter is configured for the correct RF output connector. It is factory configured
for a 3-1/8 inch EIA RF output connector
the customer’s desired RF output connector [3-1/8 inch EIA
(standard) or 4-1/16 inch EIA (optional)].
2. Connect the transmitter's RF output to a dummy load, if available, during the commissioning
procedure's initial turn on.
3. Verify the RF feed cable is in place and is cut to the required length. Do not install the EIA flange
connector at this point.
4. Get two ferrite toroids from the ancillary kit that are sufficient to accommodate the associated
feed cable or hardline. For 4-1/16 inch or
3-1/8 inch feed cable, use Nautel Part # LP32 (4.165 inch
inner diameter). Install two ferrite toroids on the transmitter end of the feed cable or hardline. See
Figure 2.6.1 on page 2.6.2 .
5. Install the user-provided appropriate size EIA flange connector on the feed cable.
6. If the RF feed cable's EIA flange connector does not have a male connector for the center
conductor, obtain an EIA bullet for the EIA flange connector. Nautel does not provide an EIA bullet.
WARNING! ENSURE THAT AC POWER IS NOT BEING APPLIED TO THE
TRANSMITTER DURING THIS PROCEDURE.
NOTE! Nautel does not typically supply bullets as there is no guarantee that they
will be compatible with all potential hardline used at the customer's site. It is
recommended that the customer supply this part and ensure a snug fit exists
between the transmitter RF output cup and EIA flange connector in
Step 6 and
Step 8 . Use sufficient insertion force to ensure low contact resistance. Failure to
observe these recommendations may result in damage to the transmitter or
feedline.