User's Manual
Table Of Contents
NTUM30DA Installation & Service Manual
Section 3 Operating Instructions
3-1 Introduction
This section contains operating instructions for the Multicarrier Cellular Amplifier.
3-2 Initial Start-Up & Operating Procedures
There are no operating controls or indicators on the NTUM30DA amplifier module. To perform
the initial start-up, proceed as follows:
1. Verify that all input and output cables are properly connected, per section 2.
CAUTION
Before applying power, make sure that the input and output of the amplifier are prop-
erly terminated at 50 ohms. Do not operate the amplifier without a load attached. Re-
fer to table 1-1 for input power requirements. Excessive input power may damage the
amplifier.
NOTE
The output coaxial cable between the amplifier and the antenna must be 50 ohm co-
axial cable. Use of any other cable will distort the output.
2. Turn on supply that provides -48 Vdc to the amplifier system.
3. Turn the amplifier front panel switch to On. The amplifier will run through built-in-test for a
few seconds, and notify the BTS when the loops converge. The base station allows up to 30
seconds for this step to complete.
4. Turn on external exciter/transceiver and apply RF input signals.
Copyright Powerwave Technologies, Inc., June 2003. All rights reserved
044-05141 Rev. A 3-1 June 2003