Agilent Technologies ESG Specifikace stáhnout pdf (Strana 117)

Fully Coded 3GPP W-CDMA Personality User’s and Programming Guide 2-101

ESG Family Signal Generators Using Functions

Option 200 3GPP W-CDMA Base Station Performance Testing

2. Measure the Bit Error Ratio (BER) of the BS.

The controller or BER test platform is measuring the bit error ratio of the BS exposed to

the RF output of ESG 1 only. This process verifies that the BER of the BS is within

specification without the presence of the interfering signal.

3. Record the first BER measurement result in the column titled, “Verification BER

Value” in Table 2-53.

4. Compare the measured BER value in the column titled, “Verification BER Value” with

the limits from the column titled, “Specification Limitations.”

• If the measured value is within the limits, continue to subsection 2.

• If the measured value is outside the limits, determine the cause of failure and repair

the BS. After repair, return to Step 1 of this subsection.

Subsection 2. In-Band Measurements

Complete the following steps to make an in-band blocking characteristics measurement on

your BS.

1. Adjust the amplitude of the fundamental W-CDMA signal to the required value.

Modify the amplitude of the W-CDMA stimulus to

−

115.0 dBm.

On ESG 1:

Press

Amplitude > −

115

> dBm.

2. Introduce the in-band 10 MHz offset interferer.

The first in-band interfering stimulus is made available at the RF output of ESG 2. In

accordance with the 3GPP W-CDMA RF specification, the center frequency of this

interferer must be offset

10 MHz from the center frequency of fundamental W-CDMA

signal. The amplitude of this interfering signal is

−

40.00 dBm.

On ESG 2:

Activate the RF output by pressing

RF On/Off (or executing the appropriate SCPI

command) until the RF ON annunciator is displayed.

3. Measure the BER of the BS in the presence of the 10 MHz offset in-band interferer.

The controller or BER test platform is measuring the bit error ratio of the BS in the

presence of both the RF output waveform from ESG 1 and the 10 MHz offset in-band

interferer from ESG 2.

4. Record the BER measurement result for the 10 MHz offset in-band interferer in the

column titled, “10 MHz Offset Interferer BER Value” in Table 2-53.

Subsection 3. Out-of-Band Measurements

Complete the following steps to make out-of-band blocking characteristics measurements

on your BS.

Perform the following parts of this subsection sequentially, in the order they appear in this

document.

1 2 ... 112 113 114 115 116 117 118 119 120 121 122 ... 301 302

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