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Agilent Technologies 35670A
Dynamic Signal Analyzer
Technical Specifications
Versatile two- or four-channel high-performance
FFT-based spectrum/network analyzer
122 μHz to 102.4 hHz 16-bit ADC
Key Specifications Frequency Range 102.4 kHz 1 channel 51.2 kHz 2 channel 25.6 kHz 4 channel Dynamic Range 90 dB typical Accuracy ±0.15 dB Channel Match ±0.04 dB and ±0.5 degrees Real-time Bandwidth 25.6 kHz/1 channel Resolution 100, 200, 400, 800 & 1600 lines Time Capture > 6 Msamples Source Types Random, Burst random, Periodic chirp, Burst chirp, Pink noise, Sine, Swept-Sine (option1D2), Arbitrary (option 1D4)
Signal Averaging (FFT Mode) Average Types (1 to 9,999,999 averages) RMS Time Exponential RMS Exponential Peak Hold Time
Averaging Controls Overload Reject Fast Averaging On/Off Update Rate Select Select Overlap Process Percentage Preview Time Record
Measurement Control Start Measurement Pause/Continue Measurement
Triggering Continuous (Freerun) External (Analog or TTL Level) Internal Trigger from any Channel Source Synchronized Trigger GPIB Trigger Armed Triggers Automatic/Manual RPM Step Time Step Pre- and Post-Trigger Measurement Delay
Tachometer Input: ±4V or ±20V range 40 mv or 200 mV resolution Up to 2048 pulses/rev Tach hold-off control
Source Outputs Random Burst Random Periodic Chirp Burst Chirp Pink Noise Fixed Sine Note: Some source types are not available for use in optional modes. See option description for details.
Input Channels Manual Range Anti-alias Filters On/Off Up-Only Auto Range AC or DC Coupling Up/Down Auto Range LED Half Range and Overload Indicators Floating or Grounded A-Weight Filters On/Off Transducer power supplies (4 ma constant current)
Frequency 20 Spans from 195 mHz to 102.4 kHz (1 channel mode) 20 Spans from 98 mHz to 51.2 kHz (2 channel mode) Digital zoom with 244 μHz resolution throughout the 102.4 kHz frequency bands.
Resolution 100, 200, 400, 800 and 1600 lines
Windows Hann Uniform Flat Top Force/Exponential
Math +,-,*, / Conjugate Magnitude Real and Imaginary Square Root FFT, FFT- LN EXP *jω or /jω PSD Differentiation A, B, and C weighting Integration Constants K1 thru K Functions F1 thru F
Analysis Limit Test with Pass/Fail Data Table with Tabular Readout Data Editing
Time Capture Functions Capture transient events for repeated analysis in FFT, octave, order, histogram, or correlation modes (except swept-sine). Time-captured data may be saved to internal or external disk, or transferred over GPIB. Zoom on captured data for detailed narrowband analysis. Up to 6 Msamples of data can be saved in the standard unit.
Data Storage Functions Built-in 3.5 in., 1.44-Mbyte flexible disk also supports 720-KByte disks, and 2 Mbyte NVRAM disk. Both MS-DOS® and HP-LIF formats are available. Data can be formatted as either ASCII or Binary (SDF). The 35670A provides storage and recall from the internal disk, internal RAM disk, internal NVRAM disk, or external GPIB disk for any of the following information:
Instrument Setup States Trace Data User-Math Limit Data Time Capture Buffers Agilent Instrument BASIC Waterfall Display Data Programs Data Tables Curve Fit/Synthesis Tables
Interfaces GPIB (IEEE-488.1 and 488.2) Parallel RS-232C Serial
Hard-Copy Output To Serial or Parallel HP-GL Plotters (PCL5e) To Raster Printers To Serial or Parallel HP-GL Printers To Disk File (Supports Raster Printer, HP-GL Plotter, and HP-GL Printer) Time Stamp
GPIB Capabilities Listener/Talker (Direct control of plotters, printers, disk drives) Conforms to IEEE 488.1/488. Conforms to SCPI 1992 Controller with Agilent Instrument Basic option
Standard Data Format (SDF) Utilities Exchange data between virtually all Agilent Dynamic Signal Analyzers Easy data transfer to spreadsheets Data transfer to MATRIX (^) X and Matlab
SDF utilities run in an external PC
Calibration & Memory Single or Automatic Calibration Built-In Diagnostics & Service Tests Nonvolatile Clock with Time/Date Time/Date Stamp on Plots and Saved Data Files
Online Help Access to Topics via Keyboard or Index
Fan On/Off
MS-DOS®^ is a U.S. registered trademark of Microsoft Corporation.
Summary of Features
on Standard Instrument
The following features are standard with the Agilent 35670A:
Instrument Modes FFT Analysis Histogram/Time Correlation Analysis Time Capture
Measurement Frequency Domain Frequency Response Power Spectrum Linear Spectrum Coherence Cross Spectrum Power Spectral Density Time Domain (oscilloscope mode) Time Waveform Autocorrelation Cross-Correlation Orbit Diagram Amplitude Domain Histogram, PDF, CDF
Trace Coordinates Linear Magnitude Unwrapped Phase Log Magnitude Real Part dB Magnitude Imaginary Part Group Delay Nyquist Diagram Phase Polar
Trace Units Y-axis Amplitude: combinations of units, unit value, calculated value, and unit format describe y-axis amplitude
Units: volts, g, meters/sec 2 , inches/sec 2 , meters/sec, inches/sec, meters, mils, inches, pascals, Kg, N, dyn, lb, user-defined EUs
Unit Value: rms, peak, peak-to-peak Calculated Value: V, V^2 , V^2 /Hz, √Hz, V^2 s/Hz (ESD) Unit Format: linear, dB’s with user selectable dB reference, dBm with user selectable impedance. Y-Axis Phase:degrees, radians X-Axis:Hz, cpm, order, seconds, user-defined
Display Formats Single Quad Dual Upper/Lower Traces Small Upper and Large Lower Front/Back Overlay Traces Measurement State Bode Diagram Waterfall Display with Skew, -45 to 45 Degrees Trace Grids On/Off Display Blanking Screen Saver
Display Scaling Autoscale Selectable Reference Manual Scale Linear or Log X-Axis Input Range Tracking Y-Axis Log X & Y Scale Markers with Expand and Scroll
Marker Functions Individual Trace Markers Coupled Multi-Trace Markers Absolute or Relative Marker Peak Search Harmonic Markers Band Marker Sideband Power Markers Waterfall Markers Time Parameter Markers Frequency Response Markers
FFT Dynamic Range Spurious Free Dynamic Range 90 dB typical (<-80 dBfs) (Includes Spurs, Harmonic Distortion, Intermodulation Distortion, Alias Products) Excludes alias responses at extremes of span. Source impedence = 50Ω. 800 Line Display. Full Span FFT Noise Floor (typical) Flat Top Window, 64 RMS Averages, 800 Line Display.
Harmonic Distortion <-80 dBfs Single Tone (in band), ≤ 0 dBfs
Intermodulation Distortion <-80 dBfs Two tones (in-band), each ≤ -6.02 dBfs
Spurious and Residual Responses <-80 dBfs Source impedence = 50Ω.
Frequency Alias Responses Single Tone (out of displayed range), ≤ 0 dBfs, ≤ 1 MHz (≤ 200 kHz with IEPE transducer power supply On)
2.5% to 97.5% of the Frequency Span <-80 dBfs
Lower and Upper 2.5% of Frequency Span <-65 dBfs
Input Noise Input Noise Level Flat Top Window, -51 dBVrms range Source Impedance = 50Ω Above 1280 Hz <-140 dBVrms/√Hz 160 Hz to 1280 Hz <-130 dBVrms/√Hz
Note: To calculate Noise as dB below Full Scale: Noise [dBfs] = Noise [dB/√Hz] + 10LOG(NBW) - Range[dBVrms]; where NBW is the Noise Equivalent BW of the Window (see below).
Window Parameters Uniform Hann Flat Top -3 dB Bandwidth* 0.125% of Span 0.185% of Span 0.450% of Span Noise Equivalent Bandwidth* 0.125% of Span 0.1875% of Span 0.4775% of Span Attenuation at ±1/2 Bin 4.0 dB 1.5 dB 0.01 dB Shape Factor 716 9.1 2. (-60 dB BW/-3 dB BW)
- For 800 line displays. With 1600, 400, 200, or 100 line displays, multiply bandwidths by 0.5, 2, 4, and 8, respectively.
800 Hz Span
Typical Noise Floor vs. Range for Differnet Frequency Spans
-70 dB/0.03%
-80 dB/0.01%
-90 dB/0.003%
-100 dB/0.001%
dB below Full Scale
-51 -41 -31 -21 -11 27 0.0028 0.0089 0.028 0.089 0.280 22. Amplitude Range (dBVrms / Vrms)
51.2 kHz Span 6.4 kHz Span
Single Channel Phase Phase Accuracy Relative to ±4.0 deg External Trigger 16 Time Averages Center of Bin, DC Coupled 0 dBfs to -50 dBfs Only 0 Hz < freq ≤ 10.24 kHz Only
For Hann and Flat Top windows, phase is relative to a cosine wave at the center of the time record. For the Uniform, Force, and Exponential windows, phase is relative to a cosine wave at the beginning of the time record.
Cross-Channel Amplitude FFT Cross-Channel ±0.04 dB (0.46%) Gain Accuracy
Frequency Response Mode
Same Amplitude Range
At Full Scale: Tested with10 RMS Averages on the -11 to +27 dBVrms Ranges, and 100 RMS Averages on the -51 dBVrms Range
Cross-Channel Phase Cross-Channel Phase Accuracy ±0.5 deg
(Same conditions as Cross-Channel Amplitude)
Input Input Ranges (full scale) (Auto-Range Capability) +27 dBVrms (31.7 Vpk) to -51 dBVrms (3.99 mVpk) in 2 dB steps Maximum Input Levels 42 Vpk Input Impedance 1 MΩ ±10% 90 μF nominal Low Side to Chassis Impedance 1 MΩ ±30% (typical) Floating Mode <0.010 μF Grounded Mode ≤ 100 Ω AC Coupling Rolloff <3 dB rolloff at 1Hz Source Impedance = 50Ω Common Mode Rejection Ratio Single Tone at or below 1 kHz
-51 dBVrms to -11 dBVrms Ranges >75 dB typical -9 dBVrms to +9 dBVrms Ranges >60 dB typical +11 dBVrms to +27 dBVrms Ranges >50 dB typical Common Mode Range (floating mode) ± 4V pk IEPE Transducer Power Supply Current Source 4.25 ± 1.5 mA Open Circuit Voltage +26 to +32 Vdc A-Weight Filter Type 0 tolerance Conforms to ANSI Standard S1.4-1983; and to IEC 651-1979; 10 Hz to 25.6 kHz Crosstalk
Between Input Channels, and <-135 dB below signal or Source-to-Input (Receiving Channel <-80 dBfs of receiving channel, whichever Source Impedance = 50Ω) response is greater in amplitude
Time Domain Specifications apply in Histogram/Time Mode, and unfiltered time display DC Amplitude Accuracy ±5.0 %fs Rise Time of -1V to 0V Test Pulse <11.4 μSec Settling Time of -1V to 0V Test Pulse <16 μSec to 1% Peak Overshoot of -1V to 0V Test Pulse <3% Sampling Period
1 Channel Mode 3.815 μSec to 2 Sec in 2x Steps 2 Channel Mode 7.629 μSec to 4 Sec in 2x Steps 4 Channel Mode (Option AY6 Only) 15.26 μSec to 8 Sec in 2x Steps
Trigger Trigger Modes Internal, Source, External (analog setting) GPIB Maximum Trigger Delay
Post Trigger 8191 seconds Pre Trigger 8191 sample periods
No two channels can be further than ±7168 samples from each other. External Trigger Max Input ±42 Vpk External Trigger Range
Low Range -2V to +2V High Range -10V to +10V External Trigger Resolution
Low Range 15.7 mV High Range 78 mV
Tachometer Pulses per Revolution 0.5 to 2048 RPM 5 ≤ RPM ≤ 491, RPM Accuracy ±100 ppm (0.01%) (Typical) Tach Level Range
Low Range -4V to +4V High Range -20V to +20V Tach Level Resolution
Low Range 39 mV High Range 197 mV Maximum Tach Input Level ±42 Vpk Minimum Tach Pulse Width 600 nSec Maximum Tach Pulse Rate 400 kHz (Typical)
Computed Order Tracking - Option 1D Maximum Order x Maximum RPM 60
Online (Real Time) 1 Channel Mode 25,600 Hz 2 Channel Mode 12,800 Hz 4 Channel Mode 6,400 Hz
Capture Playback 1 Channel Mode 102,400 Hz 2 Channel Mode 51,200 Hz 4 Channel Mode 25,600 Hz Number of Orders ≤ 200 5 ≤ RPM ≤ 491, (Maximum useable RPM is limited by Resolution, Tach Pulse Rate,Pulses/Revolution and Average Mode Settings.) Delta Order 1/128 to 1/ Resolution ≤ 400 (Maximum Order) / (Delta Order) Maximum RPM Ramp Rate 1000 RPM / second real-time (typical)
1000 - 10,000 RPM Run Up Maximum Order 10 Delta Order 0. RPM Step 30 (1 Channel) 60 (2 Channel) 120 (4 Channel) Order Track Amplitude Accuracy ±1 dB (typical) Real Time Octave Analysis - Option 1D Standards Conforms to ANSI Standard S1.11 - 1986, Order 3, Type 1-D, Extended and Optional Frequency Ranges
Conforms to IEC 651-1979 Type 0 Impulse , and ANSI S1. Frequency Ranges (at centers) Online (Real Time): Single Channel 2 Channel 4 Channel 1/1 Octave 0.063 - 16 kHz 0.063 - 8 kHz 0.063 - 4 kHz 1/3 Octave 0.08 - 40 kHz 0.08 - 20 kHz 0.08 - 10 kHz 1/12 Octave 0.0997 - 12.338 kHz 0.0997 - 6.169 kHz 0.0997 - 3.084 kHz
Capture Playback: 1/1 Octave 0.063 - 16 kHz 0.063 - 16 kHz 0.063 - 16 kHz 1/3 Octave 0.08 - 31.5 kHz 0.08 - 31.5 kHz 0.08 - 31.5 kHz 1/12 Octave 0.0997 - 49.35 kHz 0.0997 - 49.35 kHz 0.0997 - 49.35 kHz
One to 12 octaves can be measured and displayed.
1/1-, 1/3-, and 1/12-octave true center frequencies related by the formula: f(i+1)/f(i) = 2^(1/n); n=1, 3, or 12; Where 1000 Hz is the reference for 1/1, 1/3 Octave, and 1000*2^(1/24) Hz is the reference for 1/12 octave. The marker returns the ANSI standard preferred frequencies. Accuracy 1 Second Stable Average Single Tone at Band Center: ≤ ± 0.20 dB Readings are taken from the Linear Total Power Spectrum Bin. It is derived from sum of each filter. 1/3-Octave Dynamic Range > 80 dB (typical) per ANSI S1.11- 2 Second Stable Average Total power limited by input noise level
Swept Sine Measurements - Option 1D Dynamic Range 130 dB
Tested with 11 dBVrms source level at: 100 mSec integration
Arbitrary Waveform Source - Option 1D Amplitude Range AC: ±5V peak* DC: ±10V* *Vacpk + |Vdc| ≤10V Record Length # of Points = 2.56 x Lines of Resolution, or # of Complex Points = 1.28 x Lines of Resolution DAC Resolution 0.2828 Vpk to 5 Vpk 2.5 mV 0 Vpk to 0.2828 Vpk 0.25 mV
( (^) )
General Specifications Safety Standards CSA Certified for Electronic Test and Measurement Equipment per CSA
C22.2, NO. 231 This product is designed for compliance to: UL1244, Fourth Edition IEC 348, 2nd Edition, 1978 EMI / RFI Standards CISPR 11 Acoustic Power LpA < 55 dB (Cooling Fan at High Speed Setting) < 45 dB (Auto Speed Setting at 25 °C) Fan Speed Settings of High, Automatic, and Off are available. The Fan Off setting can be enabled for a short period of time, except at higher ambient temperatures where the fan will stay on. Environmental Operating Restrictions Operating: Operating: Storage & Disk In Drive No Disk In Drive Transport Ambient Temp. 4 °C to 45 °C 0 °C to 55 °C -40 °C to 70 °C Relative Humidity (non-condensing) Minimum 20% 15% 5% Maximum 80% at 32 °C 95% at 40 °C 95% at 50 °C Vibrations 0.6 Grms 1.5 Grms 3.41 Grms (5 - 500 Hz) Shock 5G (10 mSec 1/2 sine) 5G (10 mSec 1/2 sine) 40G (3 mSec 1/2 sine)
Max. Altitude 4600 meters 4600 meters 4600 meters (15,000 ft.) (15,000 ft.) (15,000 ft.) AC Power 90 Vrms - 264 Vrms (47 - 440 Hz) 350 VA maximum DC Power 12 VDC to 28 VDC Nominal 200 VA maximum DC Current at 12V standard: <10A typical 4 channel: <12A typical Warm-Up Time 15 minutes Weight 15 kg (33 lb) net 29 kg (64 lb) shipping Dimensions (Excluding Bail Handle and Impact Cover) Height 190 mm (7.5") Width 340 mm (13.4") Depth 465 mm (18.3")
Abbreviations dBVrms = dB relative to 1 Volt rms.
dBfs = dB relative to full scale amplitude range. Full scale is approx. 2 dB below ADC overload.
Typical = typical, non-warranted, performance specification included to provide general product information.
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Product specifications and descriptions in this document subject to change without notice.
© Agilent Technologies, Inc. 2003 Printed in USA March 21, 2003 5966-3064E
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