Agilent Technologies ESG Specifikace stáhnout pdf (Strana 88)

2-72 Fully Coded 3GPP W-CDMA Personality User’s and Programming Guide

Using Functions ESG Family Signal Generators

3GPP W-CDMA User Equipment Performance Tests Option 200

Subsection 3. Positive Frequency Offset Interferers IRR Measurements

Complete the following steps to make positive frequency offset measurements on your UE.

1. Introduce the positive frequency offset CW interferer (I

ouw1

is made available at the RF output of the CW source. In accordance with the 3GPP

W-CDMA RF specification, the center frequency of I

ouw1

is set 10 MHz above the center

frequency of Î

. The amplitude of I

ouw1

−

46 dBm.

On the CW source:

Set the RF output frequency to 2150 MHz (or 10 MHz above the center frequency of Î

Set the RF output amplitude to

−

46 dBm.

Activate the RF output.

2. Introduce the positive frequency offset modulated interferer (I

ouw2

is made available at the RF output of ESG 2. In accordance with the 3GPP

W-CDMA RF specification, the center frequency of I

ouw2

is set 20 MHz above the center

frequency of Î

. The amplitude of I

ouw2

−

46 dBm.

On ESG 2:

a. Press

Frequency > 2160 > MHz (or a frequency 20 MHz above the center frequency of

) to set the carrier frequency of positive frequency offset modulated interferer

ouw2

b. Press

RF On/Off until the RF ON annunciator is displayed on ESG 2 to activate the RF

output.

3. Measure the BER of the data received by the UE on RMC 12.2 kbps (25.101 V3.3) in the

presence of the positive frequency offset CW and modulated interferers (I

ouw1

and

ouw2

The controller (or BER test platform) is measuring the bit error ratio of the UE in the

presence of all three RF output waveforms, Î

(from ESG 1) and the positive frequency

offset interferers I

ouw1

and I

ouw2

(from the CW source and ESG 2, respectively).

4. In Table 2-41, record the measured BER value in the column titled, “Positive Frequency

Offset Interferers BER Value.”

5. Compare the recorded BER value in the column titled, “Positive Frequency Offset

Interferers BER Value” to the allowable values in the column titled, “Specification

Limitations” and record the status of the UE as PASS or FAIL in the column titled,

“PASS/FAIL Status.”

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