Modulation accuracy (composite evm) – Agilent Technologies N9010A User Manual
Page 284
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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.