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Performing Tests
Emission BW & Spurious Test
Chapter 4
O:\Manuals\E6385A_Cdma\Book\perf-tst.fm
84
Emission BW & Spurious Test
NOTE This test is applicable to PCS Minicells only. If the Base Station Type field on the Base
Station Configuration Menu screen is set to Autoplex Series II, this test field will not
appear on the Test Selections Menu screen.
This test performs two measurements on the transmitted signal: emission bandwidth,
and spurious emissions, as described in the following two sections. Because these
measurements are performed on the transmitter antenna output signal, this test may be
performed only with the Base Station out-of-service.
Spurious Emissions Measurement
The spurious emissions measurement consists of three sections: in-band emissions, 1
MHz adjacent block, and out-of-band emissions. These are described in the following
sub-sections.
In-Band Emissions
This test measures the spurious emissions within a single PCS block. The PCS block to
be tested is determined by the channel number entered on the Base Station
Configuration Menu screen. The test measures the emissions power starting 900 kHz
below the CDMA carrier to the bottom end of the PCS block in 30-kHz steps and starting
900 kHz above the CDMA carrier to the top end of the PCS block in 30-kHz steps. A
30-kHz measurement bandwidth is used for each step. The emissions power in each
measurement step should be less than
−
45 dBc.
1 MHz Adjacent Block
This test measures the spurious emissions 1 MHz outside of the PCS block tested during
the In-Band Emissions Test. The test measures the emissions power starting 1 MHz
below the bottom edge of the PCS block up to the block edge in 12.5-kHz steps and from
the top end of the PCS block to 1 MHz above the top of the block in 12.5-kHz steps. A
12.5-kHz measurement bandwidth is used for each step. The emissions power in each
measurement step should be less than
−
13 dBm.
Out-of-Band Emissions
This test measures the spurious emissions from 1700 MHz to 2000 MHz in 1-MHz steps
excluding the PCS block tested during the In-Band Emissions Test. A 1-MHz
measurement bandwidth is used for each step. The emissions power in each
measurement step should be less that
−
13 dBm.
Emission Bandwidth Measurement
Emission bandwidth is defined as two points centered around the carrier, outside of
which all emissions are attenuated at least 26 dB below the transmitter power. The Test
Software measures the emissions relative to the pass/fail limits setting, which sets the
two points about which to test.