GSM/EDGE Measurement Application

Measurements

e.The accuracy specification applies when the Burst Sync is set to Training Sequence, and Trigger is set to External Trigger.

Description

Specifications

Supplemental Information

 

 

 

Power vs. Time

 

GMSK modulation (GSM)

and

 

3π/8 shifted 8PSK modulation, 3π/4 shifted

 

QPSK, π/4 shifted 16QAM, –π/4 shifted

EDGE Power vs. Time

 

 

32QAM modulation in NSR/HSR (EDGE)

 

 

Measures mean transmitted RF carrier power

 

 

during the useful part of the burst (GSM

 

 

method) and the power vs. time ramping. 510

 

 

kHz RBW

Minimum carrier power at RF Input for

 

−35 dBm (nominal)

GSM and EDGE

 

 

Absolute power accuracy for in-band

 

−0.11 ±0.27 dB (95th percentile)

signal (excluding mismatch error)a

 

 

Power Ramp Relative Accuracy

 

Referenced to mean transmitted power

Accuracy

±0.16 dB

 

Measurement floor

−87 dBm

 

 

 

 

a.The power versus time measurement uses a resolution bandwidth of about 510 kHz. This is not wide enough to pass all the transmitter power unattenuated, leading the consistent error shown in addition to the uncertainty. A wider RBW would allow smaller errors in the carrier measurement, but would allow

more noise to reduce the dynamic range of the low-level measurements. The measurement floor will change by 10 × log(RBW/510 kHz). The average amplitude error will be about −0.11 dB ×

((510 kHz/RBW)2). Therefore, the consistent part of the amplitude error can be eliminated by using a wider RBW.

Chapter 10

137

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Agilent Technologies N9010A specifications Edge Power vs. Time, Power Ramp Relative Accuracy
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N9010A specifications

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