User's Manual Part 2

Test Equipment Set–up

DRAFT

SCt4812T CDMA BTS Optimization/ATP

Mar 2001

3-44

Connecting Test Equipment to

the BTS

All test equipment is controlled by the LMF via an 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 equipment is required to perform optimization:

 LMF

 Test set

 Directional coupler and attenuator

 RF cables and connectors

Refer to Table 3-22 for an overview of connections for test equipment

currently supported by the LMF. In addition, see the following figures:

 Figure 3-11 and Figure 3-12 show the test set connections for TX

calibration.

 Figure 3-13 and Figure 3-14 show the test set connections for

optimization/ATP tests.

 Figure 3-15 and Figure 3-16 show typical TX and RX ATP setup with

a directional coupler (shown with and without RFDS).

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 for

1.7/1.9 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 directional coupler and

in-line attenuator as shown in the test setup illustrations.

CAUTION