Stanford SR760

Spectrum Analyzer FFT (Distributed only in Germany.)

Specifications

Frequency
Measurement range476 µHz to 100 kHz, baseband and zoomed
Spans191 mHz to 100 kHz in a binary sequence.
Center frequencyAnywhere within the 0 to 100 kHz measurement range.
Accuracy25 ppm from 20 °C to 40 °C
ResolutionSpan/400
Window functionsBlackman-Harris, Hanning, Flattop and Uniform
Real-time bandwidth100 kHz
Signal Input
Number of channels1
InputSingle-ended or true differential
Input impedance1 MΩ, 15 pf
CouplingAC or DC
CMRR90 dB at 1 kHz (Input Range <-6 dBV)
80 dB at 1 kHz (Input Range <14 dBV)
50 dB at 1 kHz (Input Range >or = 14 dBV)
Noise5 nVrms/√Hz at 1 kHz (-166 dBVrms/√Hz typical), 10 nVrms/√Hz(-160 dBVrms/√Hz) maximum
Amplitude
Full scale input range-60 dBV (1.0 mVpk) to +34 dBV (50  Vpk) in 2 dB steps.
Dynamic range90 dB typical
Harmonic distortionNo greater than -90 dB from DC to 50 kHz. (Input Range ≤0 dBV), no greater than -80 dB to 100 kHz|
SpuriousInput range ≥-50 dBV:
No greater than -85 dB below full scale below 200 Hz.
No greater than -90 dB below full scale to 100 kHz.
Input sampling16 bit A/D at 256 kHz
Accuracy±0.2 dB ±0.005 % of full scale (excluding windowing effects).
AveragingRMS, Vector and Peak Hold. Linear and exponential averaging up to 64 k scans
Trigger Input
ModesContinuous, internal, external, or TTL
Internal levelAdjustable to ± 100 % of input scale. Positive or Negative slope.
Min. trigger amplitude10 % of input range.
External level± 5 V in 40 mV steps. Positive or Negative slope.10 kΩ Impedance
Min. trigger amplitude100 mV
External TTLRequires TTL level, (low <0.7 V, high >2 V)
Post-triggerMeasurement record is delayed by 1 to 65 000 samples
(1/512 to 127 time records) after the trigger. Delay resolution is 1 sample (1/512 of a record).
Pre-triggerMeasurement record starts up to 51.953 ms prior to the trigger. Delay resolution is 3.9062 μs.
Phase indeterminacy<2 °
Display Functions
DisplayReal, imaginary, magnitude or phase spectrum.
MeasurementsSpectrum, power spectral density, time record and 1/3 octave.
AnalysisBand, sideband, total harmonic distortion and trace math.
Graphic expandDisplay expand up to 50 x about any point.
Harmonic markerDisplays up to 400 harmonics.
Data tablesLists Y values on up to 200 X points.
Limit tablesDetects data exceeding up to 100 user defined upper and lower limit trace segments.
Source (SR770 Only)
Amplitude range0.1 mVpk to 1.0 Vpk
Amplitude resolution1 mVpk (output>100 mVpk)0.1 mVpk (output <100 mVpk)
DC offset<10.0 mVk (typical)
Output impedance<5 Ω, 50 mAp output current
Sine source
Frequency rangeDC to 100 kHz
Resolution15.26 mHz
Amplitude accuracy± 1 % (0.09 dB) of setting
Spectral purity-80 dBc, f <10 kHz
-70 dBc, f>10 kHz (harmonics and sub-harmonics)
<-100 dB full scale (spurious)
TwoTone Source
Frequency rangeDC to 100 kHz
Resolution15.26 mHz
Amplitude accuracy± 1 % (0.09 dB) of setting
Spectral purity-80 dBc, f <10 kHz, -70 dBc, f>10 kHz (harmonics and sub-harmonics)
<-100 dB full scale (spurious)
White noise source
Frequency rangeDC to 100 kHz (all spans)
Flatness<1.0 dBpp (rms averaged spectra)
Pink noise source
Frequency rangeDC to 100 kHz (all spans)
Flatness<4.0 dBpp (using 1/3 octave analysis)
Chirp source
OutputEqual amplitude sine waves at each frequency bin of the current span.
Flatness<0.05 dBpp (typical), <0.2 dBpp (max)
PhaseAutoPhase function calibrates to current phase spectrum.
General
MonitorMonochrome CRT. 640 H by 480 V resolution. Adjustable brightness and position.
InterfacesIEEE-488, RS-232 and Printer interfaces standard.
A PC keyboard input is provided for additional flexibility.
HardcopyScreen dumps and table and setting listings to dot matrix and HP LaserJet compatible printers. Data plots to HP-GL compatible plotters (RS-232 or IEEE-488).
Disk3.5" DOS compatible format, 1.44 Mbyte capacity. Stores data and instrument configuration.
Power60 W, 100/120/220/240 VAC, 50/60 Hz
Dimensions17" W x 6.25" H x 18.5" D
Weight36 lbs.
WarrantyOne year parts and labor on any defects in material or workmanship