User's Manual Part 2
Test Equipment Set–up
DRAFT
SC4812ET BTS Optimization/ATP — CDMA LMF
Apr 2001
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Connecting Test Equipment to
the BTS
All test equipment is controlled by the LMF via IEEE–488/GPIB bus.
The LMF requires each piece of test equipment to have a factory set
GPIB address. If there is a communications problem between the LMF
and any piece of test equipment, verify that the GPIB addresses have
been set correctly (normally 13 for a power meter and 18 for a CDMA
analyzer).
The following test equipment is required to perform optimization,
calibration and ATP tests:
LMF
Test set
Directional coupler and attenuator
RF cables and connectors
Refer to Table 3-21 for an overview of connections for test equipment
currently supported by LMF. In addition, see the following figures:
Figure 3-9 and Figure 3-10 show the test set connections for TX
calibration
Figure 3-11 and Figure 3-12 show the test set connections for
optimization/ATP tests
Supported Test Sets
Optimization and ATP testing may be performed using one of the
following test sets:
CyberTest
Advantest R3465 and HP–437B or Gigatronics Power Meter
Hewlett–Packard HP 8935
Hewlett–Packard HP 8921 (W/CDMA and PCS Interface (1.9 GHz)
and HP–437B or Gigatronics Power Meter
Spectrum Analyzer (HP8594E) – optional
Rubidium Standard Timebase – optional
To prevent damage to the test equipment, all TX test
connections must be through the 30 dB directional coupler
for an 800 MHz BTS and the 30 dB directional coupler
plus a 20 dB in-line attenuator for a 1.9 GHz BTS.
CAUTION
3