complete suite measurement functions analyze EDGE mobile transceiver p

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complete suite measurement functions analyze EDGE mobile transceiver p

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GSM/EDGE Measurement Suite
complete suite measurement functions analyze EDGE mobile transceiver performance conjunction with Aeroflex 3000 Series modules.
average power burst power profile GMSK phase error (peak RMS) 8PSK EVM, origin offset suppression 95th Percentile Frequency error Output radio frequency spectrum Reference sensitivity (BER, RBER FER) with 3030 series digitizer
Highlights GSM/EDGE measurement suite provides analysis major EDGE signal characteristics using procedures defined 3GPP 51-010-1 V5.2.1 section 13.17.1-4 including average power, burst profile, modulation quality (either phase error error vector magnitude), frequency error spectrum modulation switching. EDGE signals further characterized terms Origin Offset Suppression 95th Percentile EVM. addition, receiver reference sensitivity (BER, classII RBER FER) 3GPP 51-010-1 V5.2.1 section 13.14.2 measured using loopback methods defined ETSI (GSM 04.14).
Introduction GSM/EDGE measurement suite library functions application software development environments such LabVIEW, LabWindows/CVI, Visual Basic, Visual C/C++. Together with 3000 series modules enables precision characterization alignment GSM/EDGE transceivers. GSM/EDGE measurement suite comprises ActiveX controls afgsm afgsmber each with additional interfaces. Applications GSM/EDGE measurement suite designed based GSM/EDGE test systems used development manufacturing radio transceivers. GSM/EDGE Measurement Suite examples measurement parameters calculated from single data set. However, user ability decide whether extract measurement parameters individually collectively.
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Measurements based upon general assumption that device under test commanded generate normal access bursts. reference sensitivity further assumed that device under test able support direct commands activation test loop Measurements made single active time slot with Training Sequence (TSC) selection from Automatic burst detection provided which software able automatically determine modulation type training sequence (TSC) used.
Measurement Speed
Marker events within test waveform used perform synchronous data capture 3030. This only simplifies test setup also reduces amount data that must acquired therefore minimizes measurement time still further. Test Speed Using test loop measured frames (8,200 bits). This time includes signal acquisition measurement processing based using Pentium controller.
Note: waveforms supplied compatible with Aeroflex 3020 series module. There requirement 3020 option enabled.
Typical measurement times shown below measurements GSM/EDGE mobile operated mode. Measurement times based asynchronous data capture either TDMA frames using embedded CPU.
Modulation Measurements Sample Rate Measurement Time (ms) burst bursts Power Power profile Frequency Error Phase Error (peak/rms) ORFS (Output Radio Frequency Spectrum) parameters EDGE Power Power profile Frequency Error (peak/rms) Carrier leak ORFS (Output Radio Frequency Spectrum) parameters
Example Code measurement suite supplied with useful example code user development measurement applications using measurement OCX. Examples supplied variety applications development environments including Visual Basic (VB6), LabVIEW 7.0, LabWindows CVI, Visual C++. These include examples using simulated signal data well examples using 3030 Digitizer captured data.
SPECIFICATION
specifications defined when used conjunction with 3030 digitizer operating band between 2000 MHz. Measurements synchronized either burst edge midamble training sequence appropriate. measurements additionally require 3020 series digital signal generator.
EDGE AVERAGE POWER
transmitter output power average value power over time that useful information bits burst transmitted. Burst Type Normal, Access
Typical GSM/EDGE transmitter measurement times specific fast power measurement method also provided that perform fast burst power analysis independently from demodulation. this mobile power calibration accelerated. Error Rate (BER) Making fast measurement receiver possible with inclusion 3020 Digital Signal Generator with appropriate test waveform (supplied). measurement requires non-signalling test modes within mobile receiver. 3020 signal generator then outputs signal containing both BCCH. BCCH permits mobile receiver synchronize while contains known psuedo-random data. mobile phone then commanded non-signalling mode enter loop re-transmitted symbol data then recovered from which calculation performed. same transmitted data also processed examine transmitter characteristics parallel thus saving test time. measured using test loops Additionally, measured test loop Using test loop measurement performed user defined number speech frames each containing class un-encoded data bits. Using test loop (burst burst), faster measurement performed using data bits with user defined number TDMA bursts.
Indication Average power each active time slot dBfs Measurement Range channel Accuracy temperature range 23°C ±5°C 3030 <0.6 3030A/3035 <0.45
EDGE POWER PROFILE
power profile measurement produces sample array(s) power versus time selected from full burst, leading trailing ramps useful part. Burst Type Normal, access Indication Pass/fail indication with respect power template Dynamic Range Typically Rising Falling Edges Rising edge sample array power samples spaced intervals encompassing start useful part
Falling edge sample array power samples spaced intervals encompassing useful part Time Range Rising edge: relative start useful part Falling edge: relative useful part Accuracy Level: ±0.1 dB/10 dB(1) (relative peak power) Time accuracy <0.5 Useful Part Useful part sample array 589* power samples spaced 0.25 symbol intervals centered around midamble. (Equates slot symbol periods over-sampled Accuracy Level: ±0.02 (relative peak power) Time accuracy <0.1 symbol Full Burst Full burst sample array 653* power samples spaced 0.25 symbol intervals centered around midamble (Equates +163 symbol periods over-sampled
Offset Origin Suppression Range (floor) Offset Origin Suppression Accuracy ±0.5
FREQUENCY ERROR
Measurements performed single slot. frequency error measured difference between input signal nominal 3030 tuned frequency. Burst Type Normal, access Frequency Error Range Typically GMSK, Frequency Error Accuracy freq freq standard error))
ORFS (Output Radio Frequency Spectrum)
SPECTRUM MODULATION This measurement determines time gated average power specified frequency offsets. Burst Type Normal Range offset value specified sample rate 0.3. Measurement Range (typical) GMSK Carrier Frequency Frequency Offset Accuracy Typically ±0.05 dB/10 dB(1) SPECTRUM SWITCHING This measurement determines peak power selected frequency offsets. Burst Type Normal Range offset value specified sample rate 0.3. Measurement Range (typical) GMSK Carrier Frequency Frequency Offset 8PSK 8PSK
GMSK MODULATION
Measurements performed single slot. Burst Type Normal, access Phase Error Range degrees degrees peak Indication Results expressed numerical values Peak phase error. phase error array 589* values also available. *equates symbols Accuracy ±0.5° phase error ±1.0° peak phase error
8PSK MODULATION
minimum magnitude error vector calculated single slot. Burst Type Normal Range peak Indication Results expressed numerical values Peak EVM. array values corresponding symbol points also available. Accuracy ±0.4% RMS, peak
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Accuracy Typically ±0.05 dB/10 dB(1)
BER, RBER
Loopback Modes Speech loopback (loop Burst loopback (loop Number Frames Speech Frames (loop class data bits each speech frame Burst burst (loop class data bits each TDMA burst Training Sequence Auto manual Measurement Results Number bits examined Number error bits found Error Rate Number frames examined Number error frames found loop only
ORDERING
This application designed conjunction with 3030 Digitizer. either purchased with 3030 time order purchased upgrade 3030. When purchased with 3030, order 3030 option When purchased upgrade, then order RTROPT100/3030
Notes Excluding effects noise, sample rate minimum measurement offset.
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always seeking improve products, information this document gives only general indication product capacity, performance suitability, none which shall form part contract. reserve right make design changes without notice. trademarks acknowledged. Parent company Aeroflex, Inc. ©Aeroflex 2006.
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complete suite measurement functions analyze EDGE mobile transceiver p

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