测量 |
组件 | FFT, 低频程, 扫描正弦 |
频率 |
范围 | 102.4 kHz/ 100 kHz (两个显示屏有相同的范围) |
FFT 频率频距 | 195.3 mHz-102.4 kHz 或 191 mHz - 100 kHz. 两个显示屏频率频距和启动频率都不同 |
FFT 分辨率 | 100, 200, 400 或800 lines |
实时宽频 | 102.4 kHz (*大的 FFT有持续的数据获得和分配) |
精度 | 25 ppm ， 20 °C - 40 °C |
动态范围 |
动态范围 | 90 dB typical, 80 dB guaranteed (FFT and Octave). 145 dB (Swept-Sine). Includes spurs, harmonic and intermodulation distortion and alias products. Excludes alias responses at extremes of span. |
谐波偏差 | <-80 dB |
偏移 | <-80 dB (two tones in band, each less than -6.02 dBfs) |
失真 | <-80 dBfs |
Alias响应 | <-80 dBfs (single tone outside of span, <0 dBfs, less than 1 MHz) |
Full-span FFT 噪音板 | -100 dBfs typ. (input grounded, >-30 dBV, Hanning window, 64 rms averages) |
DC 响应误差 | <-30 dBfs (FFT with Auto-Cal on) |
幅度精度 |
单通道 | ±0.2 dB (excluding windowing) |
四通道 | ±0.05 dB (transfer function measurement, both inputs on the same range, rms averaged, DC to 102.4 kHz) |
相位精度 |
单通道 | ±3.0 deg. relative to external TTL trigger (-50 dBfs to 0 dBfs, frequency <10.24 kHz, center of frequency bin, DC coupled). For Blackman-Harris, Hanning, Flat-Top and Kaiser windows, phase is relative to a cosine wave at the center of the time record. For Uniform, Force and Exponential windows, phase is relative to a cosine wave at the beginning of the time record. |
多通道 | ±0.5 deg. (DC to 51.2 kHz)
±1.0 deg. (DC to 102.4 kHz)
(transfer function measurement, both inputs on the same input range, vector averaged) |
信号输入 |
输入口个数 | 2 |
满量程输入范围 | -50 dBV (3.16 mVp) -+34 dBV (50 Vp) in 2 dB steps |
*大输入水平 | 57 Vp |
输入结构 | 单端(A)或差分输入 (A-B) |
输入电阻 | 1 MΩ + 50 pF |
底座屏蔽 | Floating mode: 1 MΩ + 0.01 µF. Grounded mode: 50 Ω. Shields grounded in (A-B) mode |
*大屏蔽电压 | 4 Vp |
AC 耦合 | 0.16 Hz cutoff frequency |
CMRR | 90 dB @1 kHz (input range <0 dBV)
80 dB @1 kHz (input range <10 dBV)
50 dB @ 1 kHz (input range ≥10 dBV) |
ICP 信号调节 | 电流源: 4.8 mA
闭合线圈电压: +26 V |
滤波器 | Type 0 tolerance, ANSI standard S1.4-1983 (10 Hz to 25.6 kHz) |
干扰 | <-145 dB below signal (input to input and source to inputs, 50 Ω receiving input source impedance) |
输入噪音 | <10 nVrms/√Hz above 200 Hz (<-160 dBVrms/√Hz) |
锁定输入 |
模式 | Free run, 内部,外部, 或外部TTL |
内部 | Level adjustable to ±100 % of input scale, positive or negative slope. Min. trigger level: 5 % of input range |
外部 | Level adjustable to ±5 V in 40 mV steps, positive or negative slope.
Input impedance: 1 MΩ
*大输入: ±5 V
*小触发振幅: 100 mV |
外部 TTL | Requires TTL level to trigger (low <0.7 V, high >3.0 V) |
后置触发器 | 触发后测量记录延迟到8192 samples. |
触发前 | 触发前测量记录达到8192 samples. |
瞬间捕获 |
模式 | 持续数据记录 |
*大比率 | 262,144 samples/s for both inputs |
*大捕获长度 | 2 Msamples (single input)
8 Msamples with optional memory |
|
标准 | 符合ANSI 标准 S1.11- 1986, Order 3, Type 1-D and IEC 225-1966 |
频率范围 | (Band centers)
单通道
1/1 Octave 0.125 Hz to 32 kHz
1/3 Octave 0.100 Hz to 40 kHz
1/12 Octave 0.091 Hz to 12.3 kHz
双通道
1/1 Octave 0.125 Hz to 16 kHz
1/3 Octave 0.100 Hz to 20 kHz
1/12 Octave 0.091 Hz to 6.17 kHz |
精度 | <0.2 dB (1 second stable average, single tone at band center) |
动态范围 | 80 dB (1/3 Octave, 2 second stable average) per ANSI S1.11-1986 |
声音标准 | 脉冲, 峰值, 快速, 缓慢and Leq per ANSI S1.4-1983 Type 0 and IEC 651-1979 Type 0 |
输出源 |
振幅范围 | 0.1 mVp -5 Vp |
振幅分辨率 | 0.1 mVp (输出>500 mVp) |
DC 偏移 | <10.0 mV (typ.) |
偏移调整 | ±5 VDC (正弦, 双色) |
输出电阻 | <5 Ω, ±100 mA 峰值输出电流 |
正弦 |
振幅精度 | 设置值的±1 %, 0 Hz - 102.4 kHz
0.1 Vp - 5.0 Vp, High-Z load |
谐波& 失真 | 0.1 Vp - 5 Vp
<-80 dBc (fundamental <30 kHz)
<-75 dBc (fundamental <102 kHz) |
双色源 |
振幅精度 | 设置值的±1 % , 0 Hz - 102.4 kHz
0.1 Vp - 5 Vp, High-Z load |
谐波 | <-80 dBc, 0.1 Vp - 2.5 Vp |
白色噪音 |
时间记录 | 持续或突然出现 |
宽频 | DC,102.4 kHz or limited to span |
平整度 | <0.25 dBpp (typ.), <1.0 dBpp (max.), 平均值5000 rms |
粉色噪音源 |
宽频 | DC ,102.4 kHz |
平整度 | <2.0 dBpp, 20 Hz -20 kHz (measured using averaged 1/3 Octave Analysis) |
吱喳噪音 |
时间记录 | 持续或突然出现 |
输出 | Sine sweep across the FFT span |
平整度 | ±0.25 dB (amplitude: 1.0 Vp) |
正弦偏移 |
自动功能 | Source level, input range and frequency resolution |
动态范围 | 145 dB |
任意源 |
| ±5 V |
记录长度 | 2 Msamples (playback from arbitrary waveform memory or capture buffer). Variable output sample rate. |
其他 |
CRT监测器 | 单色, 800H , 600V 分辨率 |
接口 | IEEE-488.2, RS-232 和标准打印接口. 仪器所有功能可以通过电脑接口控制和打印. A PC (XT) 键盘输入提供额外的选择. |
硬件 | Print to dot matrix and PCL compatible printers. Plot to HP-GL or postscript plotters. Print/plot to RS-232 or IEEE-488.2 interfaces or to disk file. 另外的文档格式iGIF, PCX 和 EPS. |
磁盘 | 3.5 DOS 格式 1.44 兆字节 |
前置电流放大器 | 连接SRS前置电流放大器的电流 |
电源 | 70 W, 100/120/220/240 VAC, 50/60 Hz |
尺寸 | 17 × 8.25 × 24 (WHL) |
重量 | 56 lbs . |
