技术参数

Frequency

Measurement range

476 µHz to 100 kHz

Spans

191 mHz to 100 kHz in a binary sequence

Center frequency

Anywhere within the 0 to 100 kHz measurement range

Accuracy

25 ppm from 20 °C to 40 °C

Resolution

Span/400

Window functions

Blackman-Harris, Hanning, Flat-Top and Uniform

Real-time bandwidth

100 kHz

Signal Input

Number of channels

1

Input

Single-ended or differential

Input impedance

1 MΩ, 15 pF

Coupling

AC or DC

CMRR (at 1 kHz)

90 dB (input range <-6 dBV)
80 dB (input range <14 dBV)
50 dB (input range ≥14 dBV)

Noise

     Typ.

5 nVrms/√Hz at 1 kHz (-166 dBVrms/√Hz)

     Max.

10 nVrms/√Hz (-160 dBVrms/√Hz)

Amplitude

Full-scale input range

-60 dBV (1.0 mVp) to +34 dBV (50 Vp) in 2 dB steps

Dynamic range

90 dB (typ.)

Harmonic distortion

No greater than -80 dB from DC to 100 kHz (input range 0 dBV)

Spurious

No greater than -85 dB below full scale below 200 Hz. No greater than -90 dB below full scale to 100 kHz (input range -50 dBV).

Input sampling

16-bit A/D at 256 kHz

Accuracy

±0.3 dB ± 0.02 % of full scale (excluding windowing effects)

Averaging

RMS, Vector and Peak Hold. Linear and exponential averaging up to 64k scans.

Trigger Input

Modes

Continuous, internal, external, TTL

Internal level

Adjustable to ±100 % of input scale. Positive or negative slope.

Min. trigger amplitude

10 % of input range

External level

±5 V in 40 mV steps. Positive or negative slope. 10 kΩ Impedance

Min. trigger amplitude

100 mV

External TTL

Requires TTL level, (low <0.7 V, high >2 V)

Post-trigger

Measurement 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-trigger

Measurement record starts up to 51.953 ms prior to the trigger. Delay resolution is 3.9062 ms.

Phase indeterminacy

<2°

Display Functions

Display

Real, imaginary, magnitude or phase

Measurements

Spectrum, power spectral density, time record and 1/3 octave

Analysis

Band, sideband, total harmonic distortion and trace math

Graphic expand

Display expand up to ×50 about any point

Harmonic marker

Displays up to 400 harmonics

Data tables

Lists Y ＆#118alues of up to 200 points

Limit tables

Detects data exceeding up to 100 user-defined upper and lower limit trace segments.

Source (SR770 only)

Amplitude range

0.1 mVp to 1.0 Vp

Amplitude resolution

1 mVp (output >100 mVp), 0.1 mVp (output <100 mVp)

DC offset

<10.0 mV (typ.)

Output impedance

<5 Ω, 50 mA peak output current

Sine Source

Frequency range

DC to 100 kHz

Resolution

15.26 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)

Two-Tone Source

Frequency range

DC to 100 kHz

Resolution

15.26 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 range

DC to 100 kHz (all spans)

Flatness

<1.0 dBpp (rms averaged spectra)

Pink Noise Source

Frequency range

DC to 100 kHz (all spans)

Flatness

<4.0 dBpp (using 1/3 octave analysis)

Chirp Source

Output

Equal amplitude sine waves at each frequency bin of the current span

Flatness

<0.05 dBpp (typ.), <0.2 dBpp (max.)

Phase

AutoPhase function calibrates to current phase spectrum.

General

Monitor

Monochrome CRT. 640H by 480V resolution. Adjustable brightness and position.

Interfaces

IEEE-488.2, RS-232 and Printer interfaces standard. An XT keyboard input is provided for additional flexibility.

Hardcopy

Screen dumps and table and setting listings to dot matrix and LaserJet compatible printers. Data plots to HP-GL compatible plotters (RS-232 or IEEE-488.2).

Disk

3.5' DOS compatible format, 1.44 Mbyte (720 kbyte for the SR760) capacity. Stores data and instrument configurations.

Power

60 W, 100/120/220/240 VAC, 50/60 Hz

Dimensions

17' × 6.25' × 18.5' (WHL)

Weight

36 lbs.

Warranty

One year parts and labor on defects in materials and workmanship