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

Page 211

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Chapter 22

211

cdma2000 Measurement Application

Measurements

Description

Specifications

Supplemental Information

Modulation Accuracy (Composite
Rho)

Set the attenuation to meet the Mixer
Level requirement. Specifications
apply to BTS for 9 active channels as
defined in 3GPP2

(BTS Measurements

−25 dBm ≤ ML

a

≤ −15 dBm

20 to 30

°C)

RF input power and attenuation are set
to meet the Mixer Level range

Composite EVM

Range


0 to 25

%

Floor

1.6

%

Accuracy

b

±1.0%

±0.5%


At EVM measurement in the range of
12.5% to 22.5%

Composite Rho

Range


0.94118 to 1.0

Floor

0.99974

Accuracy

±0.0010

±0.0030

at Rho 0.99751 (EVM 5

%)

at Rho 0.94118 (EVM 25

%)

Pilot time offset

Range

−13.33 to +13.33 ms


From even second signal to start of PN
sequence

Accuracy

±300 ns

Resolution

10 ns

Code domain timing

Range

±200 ns

Pilot to code channel time tolerance

Accuracy

±1.25 ns

Resolution

0.1 ns

Code domain phase

Range

±200 mrad

Pilot to code channel phase tolerance

Accuracy

±10 mrad

Resolution

0.1 mrad

Peak code domain error

Accuracy

±1.0 dB (nominal)
Range from

−10 dB to −55 dB

I/Q origin offset

DUT Maximum Offset

Analyzer Noise Floor

−10 dBc (nominal)

−50 dBc (nominal)

Frequency error

Range

±900 Hz

Accuracy

±10 Hz + tfa

c

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