03 | Keysight | E1968A GSM/GPRS/EGPRS Test Application - Technical Overview

Audio functionality

– Choice of speech encoded on downlink TCH: none, echo, 300 Hz sine, 1 kHz sine,

3 kHz sine, or PRBS-9, PRBS-15, multi-tone, or custom

– GSM analog audio measurement (audio level, distortion, frequency, SINAD)

– Uplink and downlink audio measurement with real-time audio codec and DAI

– PESQ measurement

Receiver measurements

– GSM fast BER via loopback type C

– GSM BER via loopback type A and B

– GPRS/EGPRS multislot BER

– GPRS/EGPRS multislot block error ratio (BLER)

– MS calculated BER

– Test mode BER

– EGPRS2-A 16QAM/32QAM BEP report

Transmitter measurements

– GPRS/EGPRS multislot transmit power

– EGPRS multislot-tolerant transmit power

– 8PSK multislot-tolerant modulation accuracy (peak, rms, 95th percentile and sample

EVM; frequency, magnitude and phase errors; origin offset suppression; IQ imbal-

ance)

– GMSK multislot-tolerant frequency error

– GMSK multislot-tolerant phase error (peak and rms with confidence limits)

– Multislot power versus time (burst mask comparison with settable masks)

– Burst timing error with signaling

– Burst timing error under test mode

– Multislot-tolerant output RF spectrum due to modulation and switching

– ORFS measurement in time domain

– IQ tuning

– GSM decoded audio level

– Dynamic power

– Phase and amplitude versus time (PAvT)

– IQ capture

– Fast device tune (FDT)

– AM-PM timing offset

– Discontinuous timeslot TXP measurement

– 8PSK/16QAM measurement

Instruments

– Audio generator

– General-purpose spectrum monitor

– GSM multi-tone audio

Figure 1. Use graphical measurement results to troubleshoot your

EGPRS wireless device.