Modulation accuracy (composite rho) – Agilent Technologies N9010A User Manual
Page 211
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.