Agilent 89640A Data Sheet

Agilent 89600 Vector Signal Analyzers
Data Sheet
The following specifications describe the warranted performance of standard 89600 Series VSA systems and equivalent 89600S systems integrated by Agilent Technologies. The performance of standard 89610A systems is specified in the E8408A four-slot VXI mainframe.
1
The performance of standard 89611A,
89640A, and 89641A systems is specified in E8408A
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four-slot, and E8403A213-slot VXI mainframes. These specifications describe the nominal performance for other, non-standard 89600S configurations.
These specifications describe warranted performance over a temperature range of 20 to 30 °C and include a 30-minute warm-up from ambient conditions. Parameters identified as “typical” or “characteristic” are included for informational purposes only and are
not warranted. To aid in understanding analyzer performance capabilities, measurement units and specification terms are provided in the glossary at the end of this document.
The Agilent 89600 Series vector signal analyzers come standard with two sets of application software: vector signal analysis and spectrum analysis. The vector signal analysis application software is used to analyze complex signals in the time, frequency, and modulation domains. The spectrum analyzer application software emulates a traditional spectrum analyzer, providing fast, high­resolution signal magnitude measurements while sweeping across a user-defined frequency span. Unless otherwise indicated, the specifications in this data sheet apply to both sets of application software.
1. With backplane connector RF shielding (Option E8408-80900) and enhanced current supply (Option E8408-100).
2. With backplane connector RF shielding (Option E1401-80918).
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Table of Contents
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Resolution Bandwidth Filtering . . . . . . . . . . . . . . . . . . . . .4
Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Time and Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Measurement, Display, and Control . . . . . . . . . . . . . . . . . .10
Software Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Software Links for Sourcing and Analyzing . . . . . . . . . . .14
Vector Modulation Analysis (Option 89601A-AYA) . . . . . .15
3G Modulation Analysis (Option 89601A-B7N) . . . . . . . . .18
W-CDMA modulation analysis . . . . . . . . . . . . . . . . . . .18
cdma2000 modulation analysis . . . . . . . . . . . . . . . . . .20
1xEV-DO modulation analysis . . . . . . . . . . . . . . . . . . .22
TD-SCDMA modulation analysis . . . . . . . . . . . . . . . . .24
WLAN Modulation Analysis (Option 89601A-B7R) . . . . . .26
OFDM modulation analysis . . . . . . . . . . . . . . . . . . . . . .26
DSSS modulation analysis . . . . . . . . . . . . . . . . . . . . . .27
Dynamic Link to EEsof ADS (Option 89601A-105) . . . . . .29
Source component . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Sink component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
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Frequency
89610A 89611A 89640A 89641A (DC – 40 MHz) (70 MHz ±18 MHz) (DC – 2700 MHz) (DC – 6000 MHz)
Frequency range
Spectrum analysis mode
RF/IF mode See footnote 1 36 to 2700 MHz 36 to 6000 MHz Baseband mode DC to 40 MHz See footnote 1 DC to 36 MHz
2
DC to 36 MHz
Vector analysis mode
RF/IF mode 52 to 88 MHz
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36 to 2700 MHz 36 to 6000 MHz
Baseband mode DC to 40 MHz DC to 36 MHz DC to 36 MHz DC to 36 MHz
Frequency tuning resolution 1 mHz 1 mHz 1 mHz 1 mHz
Frequency spans
Spectrum analyzer application < 1 kHz to 40 MHz See footnote 1 < 1 kHz to 2700 MHz < 1 kHz to 6000 MHz Vector signal analyzer application
1 channel mode < 1 Hz to 39.06 MHz < 1 Hz to 36 MHz < 1 Hz to 36 MHz < 1 Hz to 36 MHz 2 channel mode < 1 Hz to 39.06 MHz < 1 Hz to 36 MHz < 1 Hz to 36 MHz < 1 Hz to 36 MHz Ch1 + j*Ch2 mode < 2 Hz to 78 MHz < 2 Hz to 72 MHz < 2 Hz to 72 MHz < 2 Hz to 72 MHz
Frequency points per span
Spectrum analyzer application 2 – 131,072 See footnote 1 2 – 131,072 2 – 131,072 Vector signal analyzer application
Calibrated points 51 – 102,401 51 – 102,401 51 – 102,401 51 – 102,401 Displayable points 51 – 131,072 51 – 131,072 51 – 131,072 51 – 131,072
Frequency accuracy Frequency accuracy is the sum of initial accuracy, aging, and temperature drift.
Initial accuracy 100 ppb 100 ppb 100 ppb 100 ppb Aging 1 ppb/day 1 ppb/day 1 ppb/day 1 ppb/day
100 ppb/year 100 ppb/year 100 ppb/year 100 ppb/year
Temperature drift (0 – 50 °C) 50 ppb 50 ppb 50 ppb 50 ppb
Frequency stability
Phase noise, baseband input at 10 MHz
100 Hz offset < –108 dBc/Hz < –108 dBc/Hz < –108 dBc/Hz < –108 dBc/Hz 1 kHz offset < –118 dBc/Hz < –118 dBc/Hz < –118 dBc/Hz < –118 dBc/Hz > 10 kHz offset < –120 dBc/Hz < –120 dBc/Hz < –120 dBc/Hz < –120 dBc/Hz
Phase noise, 80 MHz input
100 Hz offset < –92 dBc/Hz — 1 kHz offset < –102 dBc/Hz — > 10 kHz offset < –110 dBc/Hz
Phase noise, 1 GHz input
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> 20 kHz offset < –99 dBc/Hz < –99 dBc/Hz > 100 kHz offset < –110 dBc/Hz < –110 dBc/Hz
1. No spectrum analysis mode available.
2. Over-range provided to 37.11 MHz.
3. The 89611A can be configured to display and accept frequency settings based on
the user’s RF analysis band.
4. < 0.05 Grms random vibration, 5 – 500 Hz.
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Resolution Bandwidth Filtering
89610A 89611A 89640A 89641A
(DC – 40 MHz) (70 MHz ±18 MHz) (DC – 2700 MHz) (DC – 6000 MHz)
RBW range The range of available RBW choices is a function of the selected frequency span and the number of
calculated frequency points. Users may step through the available range in a 1-3-10 sequence, or enter an arbitrarily chosen bandwidth directly.
Spectrum analyzer application 1 Hz to > 5 MHz 1 Hz to > 5 MHz 1 Hz to > 5 MHz Vector signal analyzer application < 1 Hz to 10 MHz < 1 Hz to 10 MHz < 1 Hz to 10 MHz < 1 Hz to 10 MHz
RBW shape factor The window choices below allow the user to optimize the RBW shape as needed for best amplitude
accuracy, best dynamic range, or best response to transient signal characteristics.
Flat top
Selectivity (3:60 dB) 0.41 0.41 0.41 0.41 Passband flatness 0.01 dB 0.01 dB 0.01 dB 0.01 dB Rejection > 95 dBc > 95 dBc > 95 dBc > 95 dBc
Gaussian top
Selectivity (3:60 dB) 0.25 0.25 0.25 0.25 Passband flatness 0.68 dB 0.68 dB 0.68 dB 0.68 dB Rejection > 125 dBc > 125 dBc > 125 dBc > 125 dBc
Hanning
Selectivity (3:60 dB) 0.11 0.11 0.11 0.11 Passband flatness 1.5 dB 1.5 dB 1.5 dB 1.5 dB Rejection > 31 dBc > 31 dBc > 31 dBc > 31 dBc
Uniform
Selectivity (3:60 dB) 0.0014 0.0014 0.0014 0.0014 Passband flatness 4.0 dB 4.0 dB 4.0 dB 4.0 dB Rejection > 13 dBc > 13 dBc > 13 dBc > 13 dBc
5
Amplitude
89610A 89611A 89640A 89641A (DC – 40 MHz) (70 MHz ±18 MHz) (DC – 2700 MHz) (DC – 6000 MHz)
Input
Full-scale range
Baseband mode –31 dBm to +20 dBm –30 dBm to +20 dBm –30 dBm to +20 dBm –30 dBm to +20 dBm
in 3 dB steps in 5 dB steps in 5 dB steps in 5 dB steps
IF/RF mode –45 dBm to +20 dBm –45 dBm to +20 dBm –45 dBm to +20 dBm
in 5 dB steps in 5 dB steps in 5 dB steps Maximum safe input level +24 dBm, ±5 VDC +20 dBm, ±5 VDC +20 dBm, ±5 VDC +20 dBm, ±5 VDC ADC overload (typical)
Baseband mode +10 dBfs +9 dBfs +9 dBfs +9 dBfs IF/RF mode +10 dBfs +10 dBfs +10 dBfs
Input channels
Standard 1 1 1 1
Optional 2 baseband 2 IF/baseband 2 IF/baseband 2 IF/baseband Nominal impedance 50 ohms 50 ohms 50 ohms 50 ohms Connector BNC Type N Type N Type N Input coupling
Baseband mode AC or DC AC or DC AC or DC AC or DC
IF/RF mode — AC AC AC
VSWR Return loss in measurement span.
Baseband mode
All ranges 1.33:1 (17 dB) 1.5:1 (14 dB) 1.5:1 (14 dB) 1.5:1 (14 dB) IF/RF mode
+20 dBm to –20 dBm ranges 2.1:1 (9 dB) 1.8:1 (10.7 dB) 2.0:1 (9.5 dB)
–25 dBm to –45 dBm ranges 2.1:1 (9 dB) 2.5:1 (7.3 dB) 3.1:1 (5.8 dB)
Amplitude accuracy Accuracy specifications apply with flat-top window selected. Amplitude accuracy is the sum of absolute
full-scale accuracy and amplitude linearity.
Absolute full-scale accuracy
Baseband mode
0 – 50 °C ±0.8 dB ±0.8 dB ±0.8 dB ±0.8 dB
IF/RF mode (2.7 GHz)
20 – 30 °C ±0.8 dB ±2 dB ±2 dB 0 – 50 °C ±0.8 dB ±2 dB (typical) ±2 dB (typical)
RF mode (> 2.7 GHz)
20 – 30 °C ±2 dB 0 – 50 °C ±2.25 dB (typical)
Amplitude linearity
0 to –30 dBfs ±0.10 dB ±0.10 dB ±0.10 dB ±0.10 dB –30 to –50 dBfs ±0.15 dB ±0.15 dB ±0.15 dB ±0.15 dB
–50 to –70 dBfs ±0.20 dB ±0.20 dB ±0.20 dB ±0.20 dB Amplitude accuracy correction — See footnote 1 — Residual DC (typical, 50 Ω)
Baseband mode
(input range > -20 dBm) < -40 dBfs < -40 dBfs < -40 dBfs < -40 dBfs
1. External amplitude correction is available to correct for down-converter RF signal path amplitude. The user must provide a calibration trace file. Details are given in the 89611A online Help (under “89611, Setup” in the index).
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Amplitude – continued
89610A 89611A 89640A 89641A
(DC – 40 MHz) (70 MHz ±18 MHz) (DC – 2700 MHz) (DC – 6000 MHz)
Flatness Frequency response across the measurement span in vector signal analysis mode
(included in amplitude specifications).
IF/RF mode (at center ±0.2 dB (typical) ±0.2 dB (typical) ±0.2 dB (typical) frequency ±10 MHz) IF/RF mode (at center ±0.2 dB (typical) ±0.2 dB (typical) ±0.3 dB (typical) frequency ±18 MHz) Baseband mode ±0.2 dB (typical) ±0.2 dB (typical) ±0.2 dB (typical) ±0.2 dB (typical) Flatness correction See footnote 1
Channel match Multiple channels are available as options.
Amplitude match ±0.25 dB (baseband) ±0.25 dB (IF, baseband) ±0.25 dB (baseband) ±0.25 dB (baseband) (DC coupled, full-scale, ±1.2 dB (RF) ±1.2 dB (RF)
4
matching input ranges) Phase match (10 MHz ±4° — input signal, full-scale, matching input ranges) Group delay match ±2 ns (baseband) ±1.5 ns (IF) ±2.0 ns (baseband) ±2.0 ns (baseband) (across measurement span, ±5.0 ns (RF) ±5.0 ns (RF)
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typical) Stability (typical)
Amplitude 0.006 dB/°C 0.006 dB/°C 0.006 dB/°C Phase 1.0°/°C (baseband, IF) 1.0°/°C (baseband) 1.0°/°C (baseband)
2.0°/°C (RF) 2.0°/°C (RF)
4
Dynamic range Dynamic range indicates the amplitude range that is free of erroneous signals within the
measurement span.
Intermodulation distortion Two input signals, each –6 to –10 dBfs, separation > 1 MHz. Specified relative to either signal.
Third-order
IF/baseband mode < –70 dBc < –70 dBc < –70 dBc < –70 dBc RF mode < –70 dBc < –70 dBc
Second-order
IF/baseband mode < –70 dBc < –68 dBc < –68 dBc < –68 dBc RF mode < –65 dBc –55 dBc (typical) –55 dBc (typical)
Harmonic distortion Single input signal, 0 to –10 dBfs.
IF/baseband mode < –70 dBc < –68 dBc < –68 dBc < –68 dBc RF mode < –70 dBc – 55 dBc (typical) –55 dBc (typical)
Spurious responses Full-scale input signal within analyzer measurement span.
IF/baseband mode < –68 dBc < –68 dBc < –68 dBc < –68 dBc RF mode — — < –65 dBc
2
< –65 dBc
3
Full-scale input signal outside analyzer measurement span.
IF/baseband mode < –70 dBc < –68 dBc < –68 dBc < –68 dBc RF mode < –52 dBc (typical) < –50 dBc (typical)
1. Requires a manual procedure, see Help text. Required for external tuners only.
2. Typical specification degraded by 10 dB for input frequencies within ±10 MHz of 1890.6 MHz.
3. Typical specification degraded by 10 dB for input frequencies within ±10 MHz of 1890.6 MHz,
2909.4 MHz, 3709.4 MHz, 4509.4 MHz, 5309.4 MHz, 3200.0 MHz, and 3733.3 MHz.
4. For signal frequencies < 2.7 GHz.
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Amplitude – continued
89610A 89611A 89640A 89641A
(DC – 40 MHz) (70 MHz ±18 MHz) (DC – 2700 MHz) (DC – 6000 MHz)
Dynamic range, continued
Spurious sidebands Full-scale input signal.
Baseband mode (> 1 kHz offset) < –70 dBc < –70 dBc < –70 dBc < –70 dBc RF mode (1 – 3 kHz offset) < –70 dBc < –65 dBc < –65 dBc RF mode (> 3 kHz offset) < –70 dBc < –70 dBc < –70 dBc
Residual responses (> 10 kHz) Input port terminated and shielded
Baseband and IF/RF modes –77 dBfs or –100 dBm –77 dBfs or –100 dBm –77 dBfs or –100 dBm –77 dBfs or –100 dBm (maximum of)
Input noise density Range –30 dBm.
Baseband mode (> 0.1 MHz) < –121 dBfs/Hz < –121 dBfs/Hz < –121 dBfs/Hz < –121 dBfs/Hz IF/RF mode (< 1.2 GHz) < –118 dBfs/Hz < –116 dBfs/Hz < –116 dBfs/Hz RF mode (1.2 – 2.7 GHz) < –114 dBfs/Hz < –114 dBfs/Hz RF mode (> 2.7 GHz) < –113 dBfs/Hz
Sensitivity Most sensitive range.
Baseband mode < –151 dBm/Hz < –151 dBm/Hz < –151 dBm/Hz < –151 dBm/Hz IF/RF mode (< 1.2 GHz) < –159 dBm/Hz < –158 dBm/Hz < –157 dBm/Hz RF mode (1.2 – 2.4 GHz) < –156 dBm/Hz < –156 dBm/Hz RF mode (> 2.4 GHz) < –156 dBm/Hz < –153 dBm/Hz
Phase
1
89610A 89611A 89640A 89641A (DC – 40 MHz) (70 MHz ±18 MHz) (DC – 2700 MHz) (DC – 6000 MHz)
Linearity (typical) Single channel group delay deviation across maximum measurement span2, using flat-top window.
Baseband mode ±2 ns ±2 ns ±2 ns ±2 ns IF/RF mode ±6 ns ±8 ns (RF) ±8 ns (RF)
1. Measurements apply to vector signal analyzer function.
2. ±17 MHz of center frequency (RF, IF), 35.5 MHz (baseband), 39.5 mHz (89610A).
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Time and Waveform
1
The 89600 series vector signal analyzers have two signal processing modes: baseband and zoom. These two processing modes affect the appearance and the duration of input waveforms displayed by the 89600s. Most 89600 measurements are made with a non-zero start frequency, called the Zoom mode. In these cases, the time domain display shows a complex envelope representation of the input signal – that is, the magnitude and phase of the signal relative to the analyzer’s center frequency. This provides powerful capability to examine the baseband components of a signal without the need to first demodulate it.
Baseband mode refers to the special case where the measurement begins at 0 Hz. Here, the input signal is directly digitized and the waveform display shows the entire signal (carrier plus modulation), very much as an oscilloscope would.
Time record characteristics In the 89600 VSA application, measurements are based on time records. A time record
is a block of samples of the signal waveform from which time, frequency, and modulation domain data is derived. Time records have these characteristics:
Time record length (main time) (Number of frequency points – 1)/span with RBW mode set to arbitrary, auto-coupled
Time sample resolution 1/(k x span)
where: k = 2.56 for time data mode set to baseband
k = 1.28 for all other modes (default) including zoom Span = currently selected frequency span
Time capture characteristics In time capture mode the 89600 VSA application captures the incoming waveform
gap-free into high-speed time capture memory. This data may then be replayed through the analyzer at full or reduced speed, saved to mass storage, or transferred to another software application.
When time analyzing the captured waveform, users may adjust measurement span and center frequency in order to zoom in on a signal, as long as the new measurement span lies entirely with in the originally captured span.
Time capture memory size Zoom mode. For baseband mode, increase values by 2x.
Option E143xA-144 Option E143xA-288 Option E143xA-001 Bytes 144 MB 288 MB 1152 MB Samples (span 18.55 MHz)
2
24 Msa 48 Msa 192 Msa Samples (span > 18.55 MHz)
2
48 Msa 96 Msa 384 Msa
Time sample resolution 1/(k x cardinal span)
where: k = 2.56 for time data mode set to baseband (89610A only)
k = 1.28 for all other modes (default) including zoom Cardinal span = max. span/2
n
, for n = 0 to 17 During time capture, the analyzer is internally set to the cardinal span that equals or exceeds the currently displayed frequency span.
1. Measurements apply to vector signal analyzer functions.
2. 19.53 MHz for the 89610A.
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1,000,000
Figure 1. 89611A/89640/89641A maximum recording length
Figure 2. 89610A maximum recording length
100,000
10,000
1,000
100
10
1
Maximum recording length, seconds
0
1,000 10,000 100,000 1,000,000 10,000,000 100,000,000
144 MB 288 MB 1152 MB
Frequency span, Hz
1000000
100000
10000
1000
100
10
Maximum recording length, seconds
1
0.1 1,000 10,000 100,000 1,000,000 10,000,000 100,000,000
Frequency span, Hz
144 MB 288 MB 1152 MB
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Measurement, Display, and Control
Triggering
Trigger types
Spectrum application Free run, channel, external (separate trigger per frequency segment) Vector signal analysis application Free run, channel, IF magnitude, external Pre-trigger delay resolution Same as time capture sample resolution Pre-trigger delay range Same as time capture length Post-trigger delay resolution Same as time capture sample resolution Post-trigger delay range 0 to 2
30
– 1 time samples
1
IF trigger Used to trigger on in-band energy, where the trigger bandwidth is determined by the
measurement span (rounded to the next higher cardinal span).
Amplitude resolution < 0.5 dB Amplitude range 3 dBfs to < –70 dBfs Usable range is limited by the total integrated noise in the
measurement span.
IF trigger hysteresis 1.5 dB
Trigger hold-off Used to improve trigger repeatability on TDMA and other bursted signals. Trigger
hold-off prevents re-triggering of the analyzer until a full hold-off period has elapsed with no signal above the trigger threshold.
Hold-off resolution Same as time capture sample resolution Hold-off range 0 to 2
24
– 1 time samples
1
External trigger Works with analog and TTL signals
Type AC-coupled comparator Slope Positive, negative Pulse width, minimum > 300 ns Pulse amplitude, minimum > 100 mv Input impedance 1 k
Averaging
Types
Spectrum application RMS (video), RMS (video) exponential, peak hold Vector signal analysis application RMS (video), RMS (video) exponential, peak hold, time, time exponential
Number of averages, maximum > 10
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Overlap processing 0 – 99.99%
Analog demodulation
AM demodulation (typical)
Demodulator bandwidth Same as selected measurement span. Modulation index accuracy ±1%, (modulation 1 MHz) Harmonic distortion Modulation index 95%.
Modulation bandwidth 100 kHz –60 dBc Modulation bandwidth > 100 kHz and 1 MHz –55 dBc
Spurious Relative to 100% modulation index.
Modulation bandwidth 100 kHz –60 dBc Modulation bandwidth > 100 kHz and 1 MHz –55 dBc
Cross demodulation < 0.3% AM on an FM signal with 50 kHz modulation rate, 200 kHz deviation,
cardinal spans
1. Time sample length is a function of measurement span, as described under Time and waveform specifications. In actual operation, trigger parameters are set and displayed in seconds.
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Measurement, Display and Control – continued
Analog demodulation, continued
PM demodulation (typical)
Carrier locking Automatic Demodulator bandwidth Same as selected measurement span Modulation index accuracy ±0.5º (deviation < 180°, modulation rate 500 kHz) Harmonic distortion Deviation 180°.
Modulation bandwidth 50 kHz –60 dBc Modulation bandwidth > 50 kHz and 500 Hz –55 dBc
Spurious Relative to 180° deviation
Modulation bandwidth 50 kHz: –60 dBc Modulation bandwidth > 50 kHz and 500 Hz –55 dBc
Cross demodulation < 1° PM on an 80% modulation index AM signal, 1 MHz modulation rate
FM demodulation (typical)
Carrier locking Automatic Demodulator bandwidth Same as selected measurement span Modulation index accuracy ±0.1% of measurement span, deviation 2 MHz, modulation rate 500 kHz Harmonic distortion (cardinal spans)
Modulation rate 50 kHz, deviation 200 kHz –60 dBc Modulation rate 500 kHz, deviation 2 MHz –55 dBc
Spurious (cardinal spans)
Modulation rate 50 kHz, deviation 200 kHz –50 dBc Modulation rate 500 kHz, deviation 2 MHz –45 dBc
Cross demodulation < 0.5% of span of FM on an 80% modulation index AM signal, 1 MHz modulation rate
Time gating Provides time-selective frequency domain analysis on any input or analog
demodulated time-domain data. When gating is enabled, markers appear on the time data; gate position and length can be set directly. Independent gate delays can be set for each input channel. See “Time and waveform” specification for main time length and time resolution details.
Gate length, maximum Main time length Gate length, minimum Window shape/(0.3 x frequency span) where window shape is:
Flat-top window 3.8 Gaussian window 2.2 Hanning window 1.5 Uniform window 1.0
Markers
Types Marker, offset, spectrogram Search Peak, next peak left, next peak right, peak lower, peak higher, minimum Copy marker to Start freq, stop freq, center freq, ref level, despread chan, offset to span, counter to
center freq
Marker functions Peak signal track, frequency counter, band power, couple
Band power Can be placed on any time, frequency, or demodulated trace for direct computation of
band power, rms square root (of power), C/N, or C/No, computed within the selected portion of the data.
Trace math Trace math can be used to manipulate data on each measurement. Applications
include user-defined measurement units, data correction, and normalization.
Operands Measurement data, data register, constants, jw Operations +, -, x, /, conjugate, magnitude, phase, real, imaginary, square, square root, FFT,
inverse FFT, windowing, logarithm, exponential, peak value, reciprocal, phase unwrap, zero
12
Measurement, Display and Control – continued
Trace formats Log mag (dB or linear), linear mag, real (I), real (Q), wrap phase, unwrap phase, I-Q,
constellation, I-eye, Q-eye, trellis-eye, group delay
Trace layouts 1 – 4 traces on one, two, or four grids Number of colors User-definable color palette
Spectrogram display
Types Color – normal and reversed
Monochrome – normal and reversed User colormap – 1 total
Adjustable parameters Number of colors
Enhancement (color-amplitude weighting) Threshold
Trace select When a measurement is paused any trace in the trace buffer can be selected by trace
number. The marker values and marker functions apply to selected trace.
Marker Display of frequency, amplitude, and time since trigger for any point on selected trace.
Offset marker displays difference in frequency, amplitude, and time between any points on two selected traces.
Z-axis value The z-axis value is the time the trace data was acquired relative to the start of the
measurement. The z-axis value of the selected trace is displayed as the art of the marker readout.
Memory (characteristic) Displays occupy PC memory at a rate of 128 traces/MB (401 frequency point traces).
13
Software Interface
The 89600 VSA appears to other Windows®software as an ActiveX object.
Implemented according to the industry-standard Component Object Model (COM), the software exposes a rich object model of properties, events, and methods, as described in the 89600 documentation.
Because all 89600 functionality is implemented within its software, direct programmatic access to the measurement front-end hardware is never necessary and is not supported. Software development environments that are capable of interacting with COM objects include Agilent VEE, Microsoft Visual Basic
®
, Microsoft Visual
C++®, MATLAB‚ National Instruments®LabVIEW, and others.
In addition, many end-user applications are able to interact directly with COM objects, using built-in macro languages such as Visual Basic for Applications (VBA). For example, in Microsoft Excel®a VBA macro could be used to set up the instrument, collect the measurement data, and automatically graph the results.
Macro language The analyzers built-in Visual Basic script interpreter enables easy automation of many
types of measurement and analysis tasks. Scripts may be developed using any text editor, or may be recorded automatically from a sequence of menu selections. Completed scripts may be named and integrated onto the analyzers toolbar, allowing them to be launched with a single button press.
Remote displays To operate the 89600 or view its display from a remote location, the use of
commercially available remote PC software such as Microsoft NetMeeting
®
or
Symantec pcAnywhere is recommended.
Remote programming Beginning with Microsoft Windows NT 4.0, COM objects on one PC are accessible
from software running on another PC. This capability, known as Distributed COM (DCOM), makes the 89600 object model fully programmable from any other PC having network connectivity to the analyzers host PC.
File formats For storage and recall of measured or captured waveforms, spectra and other
measurement results.
ASCII Tab delimited (.txt), comma delimited (.csv) Binary Agilent standard data format (.sdf, .cap, .dat), Agilent E3238 search system time
snapshot (.cap), and time recording (.cap) files under 2 GB in size. No additional calibration.
MATLAB 5 and prior MAT-file (.mat)
14
Software Links for Sourcing and Analyzing
The 89600 software can send signal capture files to external signal generators and analyze data from several types of signal acquisition hardware.
Sources In source mode the 89600 VSA can control an Agilent signal generator via GPIB or
LAN. Control is provided via the VSA GUI. Frequency and level control of CW signals is provided. Arbitrary signals may be downloaded from the time capture memory to the signal generator for replay. The same time record may be played over and over contiguously. A window function can be applied to smooth the start-up and finish of replay.
Compatible sources ESG-C, ESG-D, or ESG-DP (firmware version B.03.50 or later), with the internal dual
arbitrary waveform generator Option E44xx-UND (firmware version 1.2.92 or later), and
E8267C vector signal generator with Option E8267C-002 internal baseband generator. Signal types CW (single frequency sine wave), arbitrary Frequency range Same as the signal generator used Level range –136 dBm to 20 dBm, 0.02 dBm steps
Signal acquisition hardware The 89600 VSA software can be linked to Agilents ESA-E series spectrum analyzers,
PSA series spectrum analyzers, most of the Infiniium scopes, and the E4406A
transmitter tester via GPIB or LAN. Control is via the VSA GUI on a PC. Full VSA
functionality is provided within the signal acquisition capabilities of the hardware
with which it is working.
15
Vector Modulation Analysis (Option 89601A-AYA)
Signal acquisition
Data block length 10 – 4,096 symbols, user adjustable Samples per symbol 1 – 20, user adjustable Symbol clock Internally generated Carrier lock Internally generated Triggering Single/continuous, external, pulse search (searches data block for beginning of TDMA
burst and performs analysis over selected burst length) Data synchronization User-selected synchronization words
Supported data formats
Carrier types Continuous, pulsed (burst, such as TDMA) Modulation formats FSK: 2, 4, 8, 16 level (including GFSK)
MSK (including GMSK)
BPSK, QPSK, OQPSK, DQPSK, D8PSK, π/4DQPSK, 8PSK, 3π/8 8PSK (EDGE)
QAM (absolute encoding): 16, 32, 64, 128, 256
QAM (differential encoding per DVB standard): 16, 32, 64
VSB: 8, 16
Single button pre-sets
Cellular CDMA (base), CDMA (mobile), CDPD, EDGE, GSM, NADC, PDC, PHP (PHS) Wireless networking Bluetooth, HiperLAN1 (HBR), HiperLAN1 (LBR), 802.11b Digital video DTV8, DTV16, DVB16, DV32, DVB64 Other APCO 25, DECT, TETRA, VDL mode 3
Filtering
Filter types Raised cosine, square-root raised cosine, IS-95 compatible, Gaussian, EDGE, low pass,
rectangular, none Filter length 40 symbols: VSB, QAM, and DVB-QAM for α < 0.2
20 symbols: all others User-selectable alpha/BT Continuously adjustable from 0.05 to 10 User-defined filters User-defined impulse response, fixed 20 points/symbol
Maximum 20 symbols in length or 401 points
Maximum symbol rate Frequency span/(1 + α) (maximum symbol rate doubled for VSB modulation format)
Symbol rate is limited only by the measurement span; that is, the entire signal must fit
within the analyzers currently selected frequency span.
Measurement results (formats other than FSK)
I-Q measured Time, spectrum (filtered, carrier locked, symbol locked) I-Q reference Time spectrum (ideal, computed from detected symbols) I-Q error versus time Magnitude, phase (I-Q measured versus reference ) Error vector Time, spectrum (vector difference between measured and reference) Symbol table and error summary Error vector magnitude is computed at symbol times only Instantaneous Time, spectrum, search time
Measurement results (FSK)
FSK measurement Time, spectrum FSK reference Time, spectrum Carrier error Magnitude FSK error Time, spectrum
16
Vector Modulation Analysis (Option 89601A-AYA) – continued
Display formats The following trace formats are available for measured data and computed ideal
reference data, with complete marker and scaling capabilities and automatic grid line
adjustment to ideal symbol and constellation states.
Polar diagrams
Constellation Samples displayed only at symbol times Vector Display of trajectory between symbol times with 1 – 20 points/symbol
I-Q versus time
I or Q only Continuous versus time Eye diagram Adjustable from 0.1 to 40 symbols Trellis diagram Adjustable from 0.1 to 40 symbols Error vector magnitude Continuous versus time
Errors table Measurements of modulation quality made automatically and displayed by the
Symbol/Error trace type. RMS and peak values.
Formats other than FSK Error vector magnitude, magnitude error, phase error, frequency error (carrier offset
frequency), I-Q/origin offset, amplitude droop (PSK and MSK formats), SNR (8/16
VSB and QAM formats), quadrature error, gain imbalance
For VSB formats: VSB pilot level is shown in dB relative to nominal. SNR is calculated
from the real part of the error vector only.
For DVB formats: EVM is calculated without removing IQ offset
FSK format FSK error, magnitude error, carrier offset frequency, deviation
Symbols table (detected bits) Bits are displayed in binary and grouped by symbol. Multiple pages can be scrolled for
viewing large data blocks. The symbol marker (current symbol shown in inverse
video) is coupled to measurement trace displays to identify states with corresponding
bits. For modulation formats other than DVBQAM and MSK, bits are user-definable
for absolute or differential symbol states.
1
1. Synchronization words are required to resolve carrier phase ambiguity in
non-differential modulation formats.
17
Vector Modulation Analysis (Option 89601A-AYA) – continued
Accuracy (typical)
(For formats other than FSK, 8/16 VSB, and OQPSK) These specifications apply to the signal at full-scale, fully contained in the
measurement span, baseband, IF1, or RF inputs, random data sequence,
range –25 dBm, start frequency 15% of span, alpha/BT 0.3 (0.3 alpha 0.7
offset QPSK), averaging = 10 and symbol rate 1 kHz. For symbol rates < 1 kHz the
accuracy may be limited by phase noise.
Residual errors Results = 150 symbols, averages = 10
Residual EVM
span ≤ 100 kHz < 0.5% rms span ≤ 1 MHz < 0.5% rms span ≤ 10 MHz < 1.0% rms span > 10 MHz < 2.0% rms
Magnitude error
span ≤ 100 kHz 0.3% rms span ≤ 1 MHz 0.5% rms span ≤ 10 MHz 1.0% rms span > 10 MHz 1.5% rms
Phase error
2
span ≤ 100 kHz 0.3° rms span ≤ 1 MHz 0.4° rms span 10 MHz 0.6° rms
span > 10 MHz 1.2° rms Frequency error Symbol rate/500,000 (added to frequency accuracy if applicable) I-Q/origin offset –60 dB
Accuracy (typical)
(Video modulation formats) Residual errors
8/16 VSB residual EVM 1.5% (SNR 36 dB, symbol rate = 10.762 MHz, α = 0.115, IF or RF input modes,
span = 7 MHz, full-scale signal, range ≥ –25 dBm, result length = 800, averages = 10)
16, 32, 64, 256 QAM residual EVM 1.0% (SNR 40 dB, symbol rate = 6.9 MHz, α = 0.15, IF or RF input modes,
span = 8 MHz, full-scale signal, range ≥ –25 dBm, result length = 800, averages = 10)
Adaptive equalizer Removes the effects of linear distortion (i.e. non-flat frequency response, multipath,
etc.) from modulation quality measurements. Equalizer performance is a function of the setup parameters (equalization filter length, convergence, taps/symbol) and the quality of the signal being equalized.
Type Decision directed, LMS, feed-forward, equalization with adjustable convergence rate Filter length 3 – 99 symbols, adjustable Filter taps 1, 2, 4, 5, 10, or 20 taps/symbol Measurement results provided Equalizer impulse response, channel frequency response Supported modulation formats MSK, BPSK, QPSK, OQPSK, DQPSK, π/4DQPSK, 8PSK, D8PSK, 3π/8 8PSK (EDGE),
16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 8VSB, 16VSB
1. For I+jQ analysis user must compensate for I/Q delay of each channel. For information on using calibration constants, please see topic calibration constants in help text.
2. For modulation formats with equal symbol amplitude.
18
3G Modulation Analysis (Option 89601A-B7N)
W-CDMA modulation analysis
Signal acquisition
Result length Adjustable from 1 to 64 slots Samples per symbol 1 Triggering Single/continuous, external Measurement region Length and offset adjustable within result length
Signal playback
Result length Adjustable from 1 to 64 slots Capture length (gap-free analysis at 0% overlap; at 5 MHz span)
144 MB (Option E143xA-144) 3,000 slots 288 MB (Option E143xA-288) 6,000 slots 1152 MB (Option E143xA-001) 24,000 slots
Adjustable parameters
Data format Downlink, uplink Single button presets Downlink, uplink Chip rate Continuously adjustable Filter alpha Adjustable from 0.05 to 1 Scramble code
Downlink Adjustable from 0 to 511 Uplink Adjustable from 0 to 2
24
– 1 Scramble offset (downlink) Adjustable from 0 to 15 Scramble type (downlink) Standard, left, right Sync type (downlink) CPICH, SCH
19
3G Modulation Analysis (Option 89601A-B7N) – continued
W-CDMA modulation analysis – continued
Measurement results
Composite All code channels at once or all symbol rates taken together.
Code domain power Composite (all symbol rates together)
Individual symbol rates (7.5, 15, 30, 60, 120, 240, 480, 960 ksps)
Code domain error Composite (all symbol rates together)
Individual symbol rates (7.5, 15, 30, 60, 120, 240, 480, 960 ksps) I-Q measured Time, spectrum I-Q reference Time, spectrum (reference computed from detected symbols) I-Q error versus time Magnitude and phase (IQ measured versus reference) Error vector Time, spectrum (vector difference between measured and reference symbol point) Symbol table and error summary EVM, magnitude error, phase error, rho, peak active CDE, peak CDE, Ttrigger, frequency
error, IQ (origin) offset, slot number
Channel Individual code channels.
I-Q measured Time I-Q reference Time (reference computed from detected symbols) I-Q error versus time Magnitude and phase (IQ measured versus reference symbol) Error vector Time (vector difference between measured and reference symbol) Symbol table and error summary EVM, magnitude error, phase error, slot number, pilot bits, tDPCH
Other measurement results
Pre-demodulation Time, spectrum
Display formats
CDP measurements results I and Q shown separately on same trace for uplink Channel measurement results I and Q shown separately Code order Hadamard, bit reverse
Accuracy (typical) Input range within 5 dB of total signal power.
Code domain
CDP accuracy ±0.3 dB (spread channel power within 20 dB of total power) Symbol power versus time ±0.3 dB (spread channel power within 20 dB of total power averaged over a slot)
Composite EVM
EVM floor (pilot only) ≤ 1.5% EVM floor (test model 1 with 16 DPCH signal) 1.5%
Frequency error
Range (CPICH synch type) ±500 Hz Accuracy ±10 Hz
20
3G Modulation Analysis (Option 89601A-B7N) – continued
cdma2000 modulation analysis
Signal acquisition
Result length 1 to 64 PCGs forward link; 1 and 48 PCGs reverse link Samples per symbol 1 Triggering Single/continuous, external Measurement region Length and offset adjustable within result length
Signal playback
Result length Adjustable from 1 to 64 PCGs, forward link; 1 to 4 PCGs, reverse link Capture length (gap-free analysis at 0% overlap;
2.6 MHz span) 144 MB (Option E143xA-144) 3,200 PCGs 288 MB (Option E143xA-288) 6,400 PCGs 1152 MB (Option E143xA-001) 25,600 PCGs
Adjustable parameters
Format Forward, reverse Single button presets Forward, reverse Chip rate Continuously adjustable Long code mask (reverse) 0 Base code length 64, 128
Measurement results
Composite All code channels at once or all symbol rates taken together.
Code domain power Composite (all symbol rates together)
Individual symbol rates (9.6, 19.2, 38.4, 76.8, 153.6, 307.2 ksps)
Code domain error Composite (all symbol rates together)
Individual symbol rates (9.6, 19.2, 38.4, 76.8, 153.6, 307.2 ksps) I-Q measured Time, spectrum I-Q reference Time, spectrum (reference computed from detected symbols) I-Q error versus time Magnitude and phase (IQ measured versus reference) Error vector Time, spectrum (vector difference between measured and reference symbol point) Symbol table and error summary EVM, magnitude error, phase error, rho, peak active CDE, peak CDE, Ttrigger, frequency
error, IQ (origin) offset, PCG number
Channel Individual code channels.
I-Q measured Time I-Q reference Time (reference computed from detected symbols) I-Q error versus time Magnitude and phase (IQ measured versus reference symbol) Error vector Time (vector difference between measured and reference symbol) Symbol table and error summary EVM, magnitude error, phase error, PCG number
Other measurement results
Pre-demodulation Time, spectrum
21
3G Modulation Analysis (Option 89601A-B7N) – continued
cdma2000 modulation analysis – continued
Display formats
CDP measurements results I and Q shown separately on same trace Channel measurement results I and Q shown separately Code order Hadamard, bit reverse
Accuracy (typical) Input range within 5 dB of total signal power.
Code domain
CDP accuracy ±0.3 dB (spread channel power within 20 dB of total power) Symbol power versus time ±0.3 dB (spread channel power within 20 dB of total power averaged over a PCG)
Composite EVM
EVM floor (pilot only) 1.5% EVM floor (test model 1 with 16 DPCH signal) 1.5%
Frequency error
Range ±500 Hz Accuracy ±10 Hz
22
3G Modulation Analysis (Option 89601A-B7N) – continued
1xEV-DO modulation analysis
Signal acquisition
Result length
Forward link 1 – 64 slots Reverse link 1 – 64 slots
Samples per symbol 1 Triggering Single/continuous, external Measurement region (applies to CDP results) Interval and offset adjustable within result length
Signal playback
Result length
Forward link 1 – 64 slots Reverse link 1 – 64 slots
Capture length (gap-free analysis at 0% overlap at 1.5 MHz span)
144 MB (Option 143xA-1440 5,000 slots 288 MB (Option 143xA-288) 10,000 slots 1152 MB (Option 143xA-001) 40,000 slots
Supported formats
Formats Forward (BTS), reverse (AT) Single-button presets Forward, reverse
Other adjustable parameters
Chip rate Continuously adjustable Analysis channel (forward) Preamble, pilot, MAC, data PN offset (forward) Continuously adjustable from 0x64 to 511x64 chips Preamble length (forward) Adjustable from 0 to 1,024 chips or auto detection Data modulation type (forward) QPSK, 8PSK, 16QAM Long code masks (reverse) Continuously adjustable from 0x0000000000 to 0x3FFFFFFFFF
Measurement results
Overall
Error summary (forward) Overall 1 and overall 2 results for: rho, EVM, magnitude error,
phase error, frequency error, slot number, and IQ offset
23
3G Modulation Analysis (Option 89601A-B7N) – continued
1xEV-DO modulation analysis – continued
Measurement results (characteristic), continued
Composite All code channels at once or all symbol rates taken together.
Code domain power All symbols taken together
Individual symbol rates (9.6, 19.2, 38.4, 76.8, 153.6, 307.2 ksps)
Code domain error (reverse) All symbols taken together
Individual symbol rates (9.6, 19.2, 38.4, 76.8, 153.6, 307.2 ksps) IQ measured Time, spectrum IQ reference Time, spectrum IQ error versus time Magnitude and phase (IQ measured versus reference) Error vector Time, spectrum (vector difference between measured and reference) Error summary (forward) EVM, magnitude error, phase error, rho, frequency error, IQ offset, slot number,
preamble length Error summary (reverse) EVM, magnitude error, phase error, rho, frequency error, IQ offset, slot number,
peak CDE, pilot, RRI, ACK, DRC, data power
Channel Individual code channel, reverse only.
IQ measured Time IQ reference Time IQ error versus time Magnitude and phase (IQ measured versus reference) Error vector Time (vector difference between measured and reference) Symbol table and error summary EVM, magnitude error, phase error, slot number
Other
Pre-demodulation Time, spectrum
Display formats (characteristic)
CDP measurement results I and Q shown separately on same trace Channel measurement results (reverse) I and Q shown separately Code order Hadamard, bit reverse
Accuracy (typical) Input range within 5 dB of total signal power.
Code domain
CDP accuracy ±0.3 dB (spread channel power within 20 dB of total power) Symbol power versus time ±0.3 dB (spread channel power within 20 dB of total power)
Composite EVM
EVM floor 1.5% max
Frequency error
Lock range ±500 Hz
Accuracy ±5 Hz
24
3G Modulation Analysis (Option 89601A-B7N) – continued
TD-SCDMA modulation analysis
Signal acquisition
Result length 1 – 8 subframes Start boundary Sub-frame, 2 frames Time reference Trigger point, downlink pilot, uplink pilot Samples per symbol (code channel results) 1 Samples per chip (composite results) 1 Triggering Single/continuous, external Measurement region Analysis timeslot selectable within first sub-frame
Signal playback
Result length 1 – 8 subframes Capture length (gap-free analysis at 0% overlap at
1.6 MHz span)
144 MB (Option E143xA-144) 1,600 subframes 288 MB (Option E143xA-288) 3,200 subframes 1152 MB (Option E143xA-001) 12,800 subframes
Supported formats
Formats Downlink, uplink Single-button presets TSM (v3.0.0)
Other adjustable parameters
Chip rate Continuously adjustable Filter alpha Continuously adjustable between 0.05 and 1.0 Downlink pilot sequence 0 – 31 Uplink pilot sequence 0 – 255 or limited to code group Scramble sequence 0 – 127 or limited to code group Basic midamble sequence 0 – 127 or limited to code group Max users (selectable for each timeslot) 2, 4, 6, 8, 10, 12, 14, 16 Midamble shift 1 – max users
Measurement results
Composite All code channels at once or all symbol rates taken together.
Code domain power All symbol rates and code channels taken together;
Individual symbol rates (80, 160, 320, 640, 1280 ksps)
Code domain error All symbol rates and code channels taken together;
Individual symbol rates (80, 160, 320, 640, 1280 ksps) IQ measured Time, spectrum IQ reference Time, spectrum IQ error versus time Magnitude and phase (IQ measured versus reference) Error vector Time, spectrum (vector difference between measured and reference) Error summary EVM, magnitude error, phase error, rho, peak active CDE, peak CDE,
frequency error, IQ offset, IQ skew, slot amplitude droop
Channel Individual code channel.
IQ measured Time IQ reference Time IQ error versus time Magnitude and phase (IQ measured versus reference) Error vector Time (vector difference between measured and reference) Symbol table and error summary EVM, magnitude error, phase error, data bits
Layer All code channels at once.
Code domain power All symbol rates taken together; Individual symbol rates (80, 160, 320, 640, 1280 ksps)
Code domain error All symbol rates taken together; Individual symbol rates (80, 160, 320, 640, 1280 ksps)
25
3G Modulation Analysis (Option 89601A-B7N) – continued
TD-SCDMA modulation analysis – continued
Measurement results (continued)
Overall
Time Aligned analysis region; active timeslots highlighted Filtered time IQ time, RRC filtered, resampled to 4x chip rate Gate time Gated IQ time Gate spectrum Averaged and instantaneous Gate PDF, CDF PDF, CDF of gate time magnitude Error summary Timing error, total power, midamble power, and data power for each timeslot
Other
Analysis timeslot CCDF Pre-demodulation Time, spectrum, correction
Display formats
Overall time measurement results Active timeslots highlighted with background color CDP and CDE measurement results Active code channels highlighted by CDP layer color
Accuracy (typical) Input range within 5 dB of total signal power.
Code domain
CDP accuracy ±0.3 dB (spread channel power within 20 dB of total power) Symbol power versus time ±0.3 dB (spread channel power within 20 dB of total power)
Composite EVM
EVM floor 1.5% max
Frequency error
Lock range ±500 Hz
Accuracy ±25 Hz
26
WLAN Modulation Analysis (Option 89601A-B7R)
OFDM modulation analysis
Signal acquisition
Supported standards 802.11a, HiperLAN2, and 802.11g (OFDM) Modulation format BPSK, QPSK, 16QAM, 64QAM (auto detect or manual override) Search length
Minimum Result length + 6 symbol times (24 µs)
Maximum 6,800 symbol times Result length Auto detect or adjustable from 1 to 1367 symbol times Triggering Single/continuous, free-run/channel/external Measurement region Length and offset adjustable within result length
Signal playback
Result length Auto detect or adjustable from 1 to 1,367 symbol times Capture length (gap-free analysis at 0% overlap; at 31.25 MHz span)
144 MB (Option E143xA-144) 1.0 seconds
288 MB (Option E143xA-288) 2.0 seconds
1152 MB (Option E143xA-001) 8.0 seconds
Adjustable parameters
Data format IEEE802.11a, HiperLAN2 Single button presets IEEE802.11a, HiperLAN2 I-Q normalize On/Off Sub-carrier spacing Continuously adjustable Symbol timing adjust Adjustable between 0 and guard interval Guard interval 1/4, 1/8 (HiperLAN2 only), adjustable between 0 and 1 in 1/64 increments Pilot tracking Phase, amplitude, timing Carriers to analyze All or single
Demodulation measurement results
I-Q measured All carriers over all symbol times I-Q reference All carriers over all symbol times (reference computed from detected symbols) Error vector Time, spectrum (for each carrier and symbol in the frame) RMS error vector Time, spectrum Common pilot error Phase, magnitude Symbol table and error summary EVM, pilot EVM, CPE (common pilot error), IQ (origin) offset, frequency error, symbol
clock error, sync correlation, number of symbols, modulation format, code rate, bit rate
Equalizer measurement results
Equalizer impulse response Computed from preamble Channel frequency response Computed from preamble
Pre-demodulation measurement results
Time Instantaneous Spectrum Instantaneous, average Search time Instantaneous
Display formats
Error vector spectrum Error values for each symbol time plotted for each carrier Error vector time Error values for each carrier plotted for each symbol time
Accuracy (typical)
Residual EVM
(20 averages, equalizer training=chan est seq and data) -45 dB
1
Frequency error (relative to frequency standard)
Lock range ±624 kHz (±2x sub-carrier spacing)
Accuracy ±8 Hz
1. For equalizer training=chan est seq -43 dB
27
WLAN Modulation Analysis (Option 89601A-B7R) – continued
DSSS modulation analysis
Signal acquisition
Modulation format Auto detect or manual override: Barker1, Barker2, CCK5.5, CCK11, PBCC5.5, PBCC11,
PBCC22, PBCC33 Preamble Auto detect (short, long) Pulse search length Adjustable between result length and 25 ms Result length Auto detect or adjust between 1 and 275,000 chips (25 ms) Triggering Single/continuous, free-run, channel, external Measurement region Interval and offset adjustable within result length
Signal playback
Result length Auto detect or adjustable between 1 and 275,000 chips (25 ms) Capture length (gap free analysis at 0% overlap; 34.375 MHz span)
144 MB (Option E143xA-144) 1.0 s 288 MB (Option E143xA-288) 2.0 s 1152 MB (Option E143xA-001) 8.0 s
Supported formats
Formats IEEE 802.11b including optional short preamble and optional PBCC modes
IEEE 802.11g/D3.0 including PBCC22 and PBCC33 modes Single-button presets DSSS/CCK/PBCC
Adjustable parameters
IQ normalize On/Off Mirror frequency spectrum On/Off Chip rate Continuously adjustable Clock adjust Continuously adjustable between ±0.5 chips Equalizer On/Off Equalizer filter length 3 – 99 chips Descrambler mode On/off, preamble only, preamble, header only
Demodulation measurement results
IQ measured IQ measured time, IQ measured spectrum, instantaneous IQ measured spectrum IQ reference IQ reference time, IQ reference spectrum, instantaneous IQ reference spectrum Other IQ error traces IQ magnitude error, IQ phase error Error vector Error vector time, error vector spectrum, instantaneous error vector spectrum Despread symbols Preamble, header, data Symbol and error table summary 802.11b 1,000-chip peak EVM, EVM, magnitude error, phase error, IQ offset, frequency
error, sync correlation, burst type, bit rate, number of data octets, data length
Equalizer measurement results Equalizer impulse response, channel frequency response.
Equalizer impulse response Computed from preamble. Channel frequency response Computed from preamble.
Pre-demodulation measurement results
Time Main raw, search Spectrum Instantaneous Other CCDF, CDF, PDF,
Display formats
Error vector spectrum Error values for each symbol time plotted for each carrier Error vector time Error values for each carrier plotted for each symbol time
28
WLAN Modulation Analysis (Option 89601A-B7R) – continued
DSSS modulation analysis – continued
Accuracy (typical) Measurement conditions: Input range within 5 dB of total signal power.
Residual EVM 2.0% maximum, all modulation formats, 10 averages Frequency error Relative to frequency standard.
Lock range ±2.5 MHz Accuracy ±8 Hz
29
Dynamic Link to EEsof ADS (Option 89601A-105)
This option links the 89600 VSA with design simulations running on the Agilent EEsof Advanced Design System providing real-time, interactive analysis of results. It adds vector signal analyzer sink and source components to the Agilent Ptolemy simulation environment. When a simulation is run, the 89600 software is automatically launched. The VSA sink component analyzes waveform data from a simulation. Its user interface and measurement functions are the same in this mode as for hardware-based measurements. The VSA source component outputs measurement data to a simulation. Its input data can be from a recording or hardware. Front-end hardware need not be present when using either component unless live measurements are to be sourced into a simulation.
Source component
ADS version required ADS 2001 or later
ADS output data types supported Timed
Data Frequency
Demod errors Complex scalar Float scalar Integer scalar
Control Data gap indicator
VSA input modes Hardware, recording
VSA analysis range Dependent on input mode and hardware installed
VSA component parameters VSATitle
(user settable) ControlSimulation
OutputType Pause
VSATrace Tstep SetUpFile RecordingFile SetUpUse AutoCapture DefaultHardware AllPoints
VSA component parameters Carrier frequency (passed to ADS, timed output only) Tstep
30
Dynamic Link to EEsof ADS (Option 89601A-105) – continued
Sink component
ADS version required ADS 1.3 or later
ADS input data types supported Float
Complex Timed – baseband Timed – ComplexEnv
VSA input modes Single channel, dual channel, I + jQ
VSA analysis range
Carrier frequency DC to > 1 THz Tstep (sample time) < 10
-12
to > 103 seconds
VSA component parameters VSATitle (user settable) Tstep
SamplesPerSymbol RestoreHW SetupFile Start Stop TclTkMode RecordMode SetFreqProp
VSA component parameters (passed from ADS) Carrier frequency
Tstep Data type
Number of VSAs that can run concurrently
ADS version 1.5 and later 20 ADS version 1.3 1
ADS components Required ADS components
EEsof Design Environment E8900A/AN EEsof Data Display E8901A/AN EEsof Ptolemy Simulator E8823A/AN
Recommended ADS configuration
EEsof Communication System Designer Pro E8851A/AN EEsof Communication System Designer Premier E8852A/AN
31
General
Hardware interfaces (characteristic)
External trigger input BNC, 1 kΩ impedance External frequency reference
Output 10 MHz > 3 dBm Input 10 or 13 MHz (±5 ppm), > 0 dBm
Safety and regulatory compliance
Safety standards EN 61010-1 (1993) Radiated emissions EN 61326-1 Immunity
1, 2
EN 61326-1
Environmental
Operating temperature range
Warranted operation 20 – 30 °C Maximum operation 0 – 50 °C
Storage –40°– 70°C Humidity 10 – 90% at 40 °C Maximum altitude 3,000 m Warm up time 30 minutes
Calibration interval 2 year
Power requirements
47 – 440 Hz operation 90 – 140 Vrms 47 – 66 Hz operation 90 – 264 Vrms
Maximum power dissipation 280 VA (E8408A 4 slot VXI mainframe) (Mainframe maximum rating) 1500 VA (E8403A 13 slot VXI mainframe)
Physical
(Using E8408A 4-slot VXI mainframe) Weight 13 kg (29 lb)
3
Dimensions (H x W x D mm)
With protective bumpers 388 x 152 x 548
Without protective bumpers 362 x 133 x 540
1. Use of a desktop PC is recommended as it offers the best immunity to electrostatic discharge.
2. Electrostatic discharge: Performance criteria B (when used with a desktop PC)
Performance criteria C (when used with a laptop PC, may require operator intervention after ESD event.)
3. 40 kg (87 lb) E8403A 13 slot mainframe with 2 RF channels.
Bluetooth is a trademark owned by Bluetooth SIG, Inc.
Microsoft, Windows, Windows NT, ActiveX, Excel, Visual Basic, Visual C++, NetMeeting, and XP Professional are U.S. registered trademarks of Mircorsoft Corporation.
pcAnywhere is a trademark owned by Symantec, Inc.
MATLAB is a U.S. registered trademark of The Math Works, Inc.
National Instruments LabVIEW is a registered trademark of National Instruments, Inc.
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Glossary
dBc dB relative to largest input signal
dBfs dB relative to full-scale amplitude range setting
where full scale is approximately 10 dB below ADC overload
Fc or f
c
Center frequency; typically the center of a
spectrum trace. This parameter is set in the Frequency menu
FS or fs Full scale; synonymous with amplitude range or
input range
ppb Parts per billion
RBW Resolution bandwidth
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