User's Manual

G3L-1929- Installation and Service Manual
5-4 Performance Test
Performance testing should be conducted every 12 months to ensure that the amplifier system
meets the operational specifications listed in Table 5-3. Also verify system performance after any
amplifier module is replaced in the field. The test equipment required to perform the testing is
listed in table 5-2, and the test setup is shown in figure 5-1.
NOTE
The frequencies used in this test are typical for an amplifier with a 60 MHz band from
1930 MHz to 1990 MHz. Select evenly spaced F1, F2, F3, and F4 frequencies that cover
the instantaneous bandwidth of your system.
5-4.1 Amplifier Performance Test
To perform these tests, proceed as follows:
Connect test equipment as shown in figure 5-1.
WARNING
Do not apply any RF signals at this time.
5-4.1.1 Amplifier Spurious Emissions Test:
With the RF input signal to the amplifier set to be as shown in Figure 5-1, use the spectrum ana-
lyzer to measure the spurious emissions performance. Record test data in Table 5-3. Verify that it
is within the specifications shown in table 1-2. Switch tested amplifier to OFF.
5-4.1.2 Gain Test:
1. Disconnect spectrum analyzer from test setup, and connect the network analyzer.
2. Set network analyzer as follows:
A. Power output to -10 dBm max.
B. Frequency start to 1930 MHz.
C. Frequency stop to 1990 MHz.
D. Normalize the network analyzer for gain and return loss.
3. Check the amplifier gain across the band from 1930 MHz to 1990 MHz. Gain should be as
specified in table 1-1. Record test data in table 5-3.
5-4.1.3 Input Return Loss:
Read and record the S
11
return loss measurement on network analyzer. Record test data in table
5-3.
 Copyright Powerwave Technologies, Inc., May 2003. All rights reserved
044-05138 Rev. A 5-2 May 2003