动态信号分析仪
SR770 100kHz单通道FFT网络分析仪
SR760 100kHz FFT 频谱分析仪
DC-100kHz带宽
100kHz实时带宽
90dB动态范围 内部和外部触发
16位A/D转换 线性和指数平均
低失真合成信号源(SR770)
硬拷贝输出到打印机和绘图仪
3.5"MS-DOS兼容磁盘驱动器
谐波、主带和边带分析 GPIB和RS-232接口
技术指标
频率
测量范围 476 µHz to 100 kHz Spans 191 mHz to 100 kHz in abinary sequence
中心频率 Anywhere within the 0 to 100 kHz
measurement range
精度 25 ppm from 20 °C to 40 °C
分辨率 Span/400
窗函数 Blackman-Harris, Hanning, Flat-Top and Uniform
实时带宽 100 kHz
信号输入
通道数 1
输入 Single-ended or differential
输入阻抗 1 MΩ, 15 pF
耦合 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)
噪声
典型值 5 nVrms/√Hz at 1 kHz (–166 dBVrms/√Hz)
最大值 10 nVrms/√Hz
(–160 dBVrms/√Hz)
幅度
量程 –60 dBV (1.0 mVp) to +34 dBV (50 Vp) in 2 dB steps
动态范围 90 dB (typ.)
谐波扭曲 No greater than –80 dB from DC to100 kHz (input range 0 dBV)
Spurious No greater than –85 dB below full scale (<200 Hz). No greater than
–90 dB below full scale (to 100 kHz). (–50 dBV input range)
AD采样 16-bit A/D at 256 kHz
精度 ±0.3 dB ± 0.02 % of full scale (excluding windowing effects)
平均模式 RMS, Vector and Peak Hold. Linear and exponential averaging up to 64k scans.
信号源(SR770 Only)
幅度范围 0.1 mVp to 1.0 Vp
幅度分辨率 1 mVp (output >100 mVp),
0.1 mVp (output <100 mVp)
直流偏移 <10.0 mV (typ.)
输出阻抗 <5 Ω, 50 mA peak output current
Sine Source
频率范围 DC to 100 kHz
分辨率 15.26 mHz
幅度精度 ±1 % (0.09 dB) of setting
谱纯度 (Harmonics and sub-harmonics)
–80 dBc, f <10 kHz
–70 dBc, f >10 kHz (Spurious)
<–100 dB full scale
Two-Tone Source
频率范围 DC to 100 kHz
分辨率 15.26 mHz
幅度精度 ±1 % (0.09 dB) of setting
谱纯度 (Harmonics and sub-harmonics)
–80 dBc (f <10 kHz)
–70 dBc (f >10 kHz) (Spurious)
<–100 dB full scale
White Noise Source
频率范围 DC to 100 kHz (all spans)
平坦性 <1.0 dBpp (rms averaged spectra)Pink Noise Source
频率范围 DC to 100 kHz (all spans)
平坦性 <4.0 dBpp (using 1/3 oct. analysis)Chirp Source
输出 Equal amplitude sine waves at each frequency bin of the current span
平坦性 <0.05 dBpp (typ.)<0.2 dBpp (max.)
相位 AutoPhase function calibrates to current phase spectrum.
SR785双通道动态信号分析仪(具有Order Tracking功能)
SR780 100kHz双通道FFT网络信号分析仪
DC-102.4kHz带宽
2MS瞬时捕获存储器
90dB动态范围 内部和外部触发
16位A/D转换 内建超文本帮助
低失真合成信号源 图形输出格式为GIF,EPS,PCX,HPGL
NSI标准倍频程测量 3.5"MS-DOS兼容磁盘驱动器
145dB动态范围扫描正弦方式 GPIB和RS-232接口
技术指标
测量组
组 FFT, Correlation, Time Histogram, Swept-Sine, Order Tracking(SR785 Only)
频率
范围 102.4 kHz or 100 kHz (both displays have the same range)
FFT范围 195.3 mHz to 102.4 kHz or 191 mHz to 100 kHz. The two
displays can have different spans and start frequencies.
FFT分辨率 100, 200, 400 or 800 lines
实时带宽 102.4 kHz (highest FFT span with
continuous data acquisition and averaging)
精度 25 ppm from 20 °C to 40 °C
动态范围
动态范围 90 dB typical, 80 dB guaranteed
(FFT and Octave).
145 dB typical (Swept-Sine). Includes spurs, harmonics, intermodulation distortion, and alias products. Excludes alias responses at extremes of span.
谐波扭曲 <–80 dB (single tone in band)
内调扭曲 <–80 dB (two tones in band, each less than –6.02 dBfs)
Spurious <–80 dBfsAlias responses <–80 dBfs (single tone outside ofspan, <0 dBfs, less than 1 MHz)
全范围 FFT噪声 –100 dBfs typical (input grounded, >–30 dBV, Hanning window, 64 rms averages)
Residual DC response <–30 dBfs (FFT with Auto-Cal on)
幅度精度
单通道 ±0.2 dB (excluding window effects)
交叉通道 ±0.05 dB, DC to 102.4 kHz (frequency response measurement, both inputs on the same range, rms averaged)
信号输入
通道数 2
量程 –50 dBV (3.16 mVp) to +34 dBV (50 Vp) in 2 dB steps
最大输入 57 Vp
输入配置 Single-ended (A), differential (A–B)
输入阻抗 1 MΩ + 50 pF
接地模式 Floating mode: 1 MΩ + 0.01 mFGrounded mode: 50 ΩShields grounded in (A–B) mode Max. shield voltage 4 Vp
交流耦合 0.16 Hz cutoff frequencyCMRR 90 dB at 1 kHz (input range <0 dBV)
80 dB at 1 kHz (input range <10 dBV)
50 dB at 1 kHz (input range ≥10 dBV)
ICP Current source: 4.8 mA
Open circuit voltage: +26 V
A-weight filter Type 0 tolerance, ANSI standard
S1.4-1983 (10 Hz to 25.6 kHz)
串扰 <–145 dB below signal (input to input and source to inputs, 50 Ω receiving input source impedance)
输入噪声 <10 nVrms/√Hz above 200 Hz
(<–160 dBVrms/√Hz)
信号源
幅度范围 0.1 mVp to 5 Vp
幅度分辨率 0.1 mVp
直流偏移 <10.0 mV (typ.)
偏移调节 ±5 VDC (sine, swept-sine, two-tone)
输出阻抗 <5 Ω, ±100 mA peak output currentSine Source
幅度精度 ±1 % of setting, 0 Hz to 102.4 kHz
0.1 Vp to 5 Vp into Hi-Z load
谐波 0.1 Vp to 5 Vp
<–80 dBc (fundamental <30 kHz)
<–75 dBc (fundamental <102 kHz)
Two-Tone Source
幅度精度 ±1 % of setting, 0 Hz to 102.4 kHz,0.1 Vp to 5 Vp into Hi-Z load
谐波 <–80 dBc, 0.1 Vp to 2.5 Vp
白噪声
时间记录 Continuous or burst
带宽 DC to 102.4 kHz or limited to span
平坦性 <0.25 dBpp (typ.), 5000 rms averages (<1.0 dBpp (max.))
Pink Noise Source
带宽 DC to 102.4 kHz
平坦性 <2.0 dBpp, 20 Hz to 20 kHz (measured using averaged 1/3 octaveanalysis)Chirp Source
时间记录 Continuous or Burst
输出 Sine sweep across the FFT span
平坦性 ±0.25 dB (1.0 Vp)
Swept-Sine Source
自动功能 Source level, input range and frequency resolution
动态范围 145 dBArbitrary Source
幅度范围 ±5 V
记录长度 2 Msamples (playback from arbitrary waveform memory or capture buffer), variable output sample rate