beautypg.com

Modulation accuracy (composite evm) – Agilent Technologies N9010A User Manual

Page 284

background image

284

Chapter 32

TD-SCDMA Measurement Application

Measurements

b. Code Domain Power Absolute accuracy is calculated as sum of 95th percentile Absolute Amplitude

Accuracy and Code Domain relative accuracy at Code Power Level.

c. This is tested for signal with 2 DPCH or 2 HS-PDSCH in TS0.

Description

Specification

Supplemental Information

Modulation Accuracy (Composite
EVM)

(BTS Measurements

−25 dBm ≤ ML

a

≤ −15 dBm

20 to 30

°C)

Set the attenuation to meet the Mixer Level
requirement

Composite EVM

Range

Test signal with TS0 active and
one DPCH in TS0

0 to 18

%

Test signal with TS0 active and
one HS-PDSCH in TS0

0 to 17

% (nominal)

Floor

b

1.5

%

Accuracy

Test signal with TS0 active and
one DPCH in TS0

EVM

≤ 9%

±0.7%

cd

EVM 9%

< EVM ≤ 18%

±1.1%

Test signal with TS0 active and
one HS-PDSCH in TS0

±1.1% (nominal)

Peak Code Domain Error

Accuracy

Test signal with TS0 active and
one DPCH in TS0

±0.3 dB

Test signal with TS0 active and
one HS-PDSCH in TS0

±1.0 dB

I/Q Origin Offset

DUT Maximum Offset

−20 dBc (nominal)

Analyzer Noise Floor

−50 dBc (nominal)

Frequency Error

Range

±7 kHz (nominal)

e

Accuracy

Test signal with TS0 active and
one DPCH in TS0

±5.2Hz + tfa

f

Test signal with TS0 active and
one HS-PDSCH in TS0

±6 Hz + tfa

f

(nominal)

a. ML (mixer level) is RF input power minus attenuation.