User Manual
Test Equipment Set–up
Jan 2002
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SC4812ET BTS Optimization/ATP — CDMA LMF
Connecting Test Equipment to
the BTS
The following test equipment is required to perform calibration and ATP
tests:
LMF
Communications system analyzer model supported by the LMF
Power meter model supported by the LMF (required when using the
HP 8921A/600 and Advantest R3465 analyzers)
Non–radiating transmit line termination load
Directional coupler and in–line attenuator
RF cables and adapters
Refer to Table 3-28 and Table 3-29 for an overview of connections for
test equipment currently supported by the LMF. In addition, see the
following figures:
Figure 3-9 and Figure 3-10 show cable calibration test setup.
Figure 3-11, Figure 3-12 and Figure 3-14 show the test set
connections for TX calibration.
Figure 3-14 and Figure 3-15 show test set connections for IS–95 A/B
optimization/ATP tests
Figure 3-16 through Figure 3-19 shows test set connections for
IS–95 A/B/C optimization/ATP tests.
Figure 3-20 and Figure 3-21 show typical TX and RX ATP setup with
a directional coupler (shown with and without RFDS).
Test Equipment GPIB Address
Settings
All test equipment is controlled by the LMF through an IEEE–488/GPIB
bus. To communicate on the bus, each piece of test equipment must have
a GPIB address set which the LMF will recognize. The standard address
settings used by the LMF for the various types of test equipment items
are as follows:
Signal generator address: 1
Power meter address: 13
Communications system analyzer: 18
Using the procedures included in the Setting GPIB Addresses section of
Appendix I, verify and, if necessary, change the GPIB address of each
piece of test equipment used to match the above
.
Supported Test Sets
To prevent damage to the test equipment, all TX test
connections must be through the directional coupler and
in-line attenuator as shown in the test setup illustrations.
CAUTION
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