1GHz 数字示波器 LeCroy LC574AL

厂家: 美国力科
尺寸: 26x40x45cm
重量: 20kg

• 带宽 1 GHz 四通道
• 单通道最大采样率
  双通道模式 4GSa/s
  四通道模式 2GSa/s
• 存储深度最大 8 M
• 9" 彩色CRT显示
• 通信控制接口 GPIB 和 RS-232-C
• 外接显示接口 VGA

9"彩色显示

LeCroy provides a very large, sharp oscilloscope screen that is 50% larger in total viewing area than a 7" screen.

Its powerful features include Analog Persistence, Color-Graded Persistence, Full Screen mode, Opaque or Transparent display, color association, and personal color schemes. These provide the user with outstanding benefits that accelerate visual processing and effective communication of on-screen information.

高速采集

The design and debug of fast digital systems and the need to capture fast transient signals require high-speed signal capture. The LC574A four-channel, 1 GS/s, 1 GHz bandwidth DSO operates at a 4 GS/s sample rate for single-channel inputs. The high sample rate, bandwidth and the 1 GHz trigger bandwidth provide a flexible solution for capturing and viewing fast risetime signals.

Large Sample Rate Window

Having a high sample rate in a DSO is only the first step to preserving data integrity. The time window over which this sample rate is available is also of critical importance. Long acquisition memory maintains the oscilloscope's highest sample rate for large time windows allowing the user to sample long signals with high horizontal resolution.

With up to 8 million points of acquisition memory, the maximum sample rate of the LC574AL of 4 GS/s (2 GS/s in LC334AL) is maintained for a time window of 2 ms (4 ms in LC334AL). This sample rate window enables the user to record long signals with high resolution.

Quick Diagnoses

Capturing and viewing waveforms are fundamental to an oscilloscope. Productivity improvements are accessible by using built-in math functions to assist troubleshooting and diagnoses of circuit problems.

The signal analysis capability of these DSOs is enhanced by advanced waveform math, spectrum analysis, and waveform parameter analysis. This analysis capability greatly increases the speed with which circuit problems are clearly identified and solved.

Analog Persistence

At a push of the green button, the user can switch between an analog style view and a digital view of signals on these oscilloscopes.

The depth of signal information can be explored along the third dimension of the waveform display to give the user a complete picture of waveform activity.

Unlike an analog oscilloscope, all signal data is captured and available in memory for analysis and measurements. Analog Persistence gives the user the best of both the analog and digital worlds of oscilloscopes.

Easy Documentation

All waveform data and results of analysis can be quickly saved to floppy disk, memory card, ATA flash card, or a removable hard disk. This provides an efficient way to archive information and facilitates easy documentation of results.

An internal graphics printer (standard in "L" models) outputs screen dumps in seconds providing the user with an immediate and clear record of signal activity.

捕获信号

采集系统

• LC574AL带宽(-3 dB)：50 ohm：DC to 1 GHz
• 带宽(-3 dB)：1 Mohm：DC to 500 MHz typical at probe tip with optional 1 GHz FET probe for LC334A and with PP005 standard with LC574A.
• No. of Channels：4
• No. of Digitizers：4
• 最大采样速率:2 ms,4 GS/s
• LC574A灵敏度:
  2 mV/div to 1 V/div, 50 ohm, fully variable.
  2 mV/div to 10 V/div, 1 Mohm, fully variable.
• Scale factors：A wide choice of probe attenuation factors are selectable.
  Offset Range LC574A:
  2.00 - 4.99 mV/div：?00 mV
  5.00- 99 mV/div：? V
  0.1 - 1.0 V/div：?0 V
  1.0 - 10 V/div：?00 V
  (1 Mohm only)
• DC精确度:1%(典型值)
• 垂直分解度：8 bits
• LC574A带宽限幅器：25 MHz, 200 MHz
• 输入耦合：AC, DC, GND
• 输入阻抗：10 Mohm//11 pF for LC374A/LC574A (system capacitance using PP005) or 50 ohm.
• 最大输入:
  50 ohm：? V DC (500 mW) or 5 V RMS
  1 Mohm on LC574A：400 V (DC + peak AC <=10 kHz)
• SMART存储器：This total memory management system dynamically manages acquisition memory to guarantee that signals are always sampled at the highest possible sample rate and that system RAM and microprocessor resources are always optimally employed.

时基系统

• 时基：Main and up to 4 Zoom Traces
• Time/Div Range：1 ns/div to 1,000 s/div.
• 时钟精确度：<=10 ppm
• Interpolator resolution：10 ps
• Roll Mode：Ranges 500 ms to 1,000 s/div. For >50 kpoints：10 s to 1,000 s/div.
  外部时钟：<=100 MHz (20-100 MHz for LC574A and LC374A) on EXT input with ECL, TTL or zero crossing levels. Optional 50 MHz to 500 MHz rear-panel fixed frequency clock input.
• 外部引用：Optional 10 MHz rear-panel input.

观察信号

• 类型：Color 9" Raster Scan CRT, 0.26 mm dot pitch.
• 分辩率：640 x 480 points.
• 显示范围：170 mm x 125 mm - 50% greater than that of a 7" display.
• 控制：Rear-panel presets for position, brightness and contrast. Menu controls for brightness and color selection.
• 栅格类型：Single, Dual, Quad, Octal, XY, Single+XY, Dual+XY, and Full Screen - an enlarged view of each grid style.
• 栅格线：Internally generated; separate intensity control for grids and waveforms. Selectable blending of grid with displayed traces.
• 波形类型：Dot Join with option-al sample point highlight or Dots only.
• Trace Display：Opaque or transparent mode, with overlap management.
• Number of Traces：8 (any mix of channels, memories or Math functions).
• 实时时钟：Date, hours, minutes, seconds.
• 外接监视器：Rear-panel 15-pin socket for VGA compatible monitor.
• Vertical Zoom：Up to 5x vertical ex-pansion (50x with averaging, up to 40 礦/div sensitivity).
• Horizontal Zoom:LC574A：Waveforms can be expanded to give 0.4-0.5 points per division. Zoom factors up to 2,000,000x with all channels combined on the LC574AL.

触发系统

• 触发模式：Normal, Auto, Single, and Stop.
• 触发源：CH1, CH2, CH3, CH4, Line, EXT, EXT/10. Slope, Level and Coupling are unique to each source.
• Slope：Positive, Negative.
• 耦合：AC, DC, HF, LFREJ, HFREJ
• 预置触发器记录：0 to 100% of full scale (adjustable in 1% increments).
• 后置触发器延迟：0 to 10,000 divisions (adjustable in 0.1 div. increments).
• Holdoff by time：10 ns to 20 s
• Holdoff by events：0 to 99,999,999
• LC574A外触发最大输入:10 Mohm//11pF(system capacitance using PP005):400 V (DC + peak AC <=10 kHz)
• 适时触发：Trigger Date and Time are listed in the Memory Status Menu.
• Trigger Comparator：Optional ECL rear-panel output. Alternatively, the calibrator output can provide a trigger output or a Pass/Fail test output.

SMART触发类型

• Pattern：Trigger on the logic combination of 5 inputs - CH1, CH2, CH3, CH4, and EXT Trigger, where each source can be defined as High, Low or Don't Care. The Trigger can be defined as the beginning or end of the specified pattern.
• Signal or Pattern Width：Trigger on width between two limits selectable from <2.5 ns to 20 s. Will typically trigger on glitches 1 ns wide.
• Signal or Pattern Interval：Trigger on interval between two limits selectable from 10 ns to 20 s.
• Dropout：Trigger if the input signal drops out for longer than a time-out from 25 ns to 20 s.
• State/Edge Qualified：Trigger on any source only if a given state (or transition) has occurred on another source. The delay between these events can be defined as a number of events on the trigger channel or as a time interval.
• TV：Allows selection of both line (up to 1500) and field number (up to 8) for PAL (SECAM), NTSC or nonstandard video.
• Exclusion Trigger：Trigger on inter-mittent faults by specifying the normal width or period of a signal. The oscillo-scope will trigger only on aberrations which are shorter or longer than normal.

自校

• Pressing Autosetup sets timebase, trigger and sensitivity to display a wide range of repetitive signals, (Frequency above 50 Hz; Duty Cycle greater than 0.1%).
• Autosetup Time：Approximately 2 seconds.
• Vertical Find：Automatically sets sensitivity and offset for selected channel.

接口信息

• Remote Control：Possible by GPIB and RS-232-C for all front-panel controls, as well as all internal functions.
• RS-232-C Port：Asynchronous up to 115.2 Kb/s for computer/terminal control or printer/plotter connection.
• GPIB Port：Configurable as talker/listener for computer control and fast data transfer, up to 300 kbytes/sec. Command Language complies with requirements of IEEE-488.2.
• Centronics Port：Hardcopy parallel interface is standard.
• PC Card (PCMCIA I/II/III) Ports：For memory cards, ATA compatible flash cards and removable hard disks - optional.
• Floppy Disk：High-density 3.5" floppy disk drive (DOS format) is standard.
• VGA Compatible Display：15-pin D-type VGA compatible connector for external color display.
• Hardcopy：Screen dumps are activated by a front-panel button or via remote control. TIFF and BMP formats are available for importing to desktop pub-lishing programs. The following printers and plotters can be used to make hardcopies:
• B/W：HP LaserJet, HP DeskJet 500, Epson FX.
• Color：HP DeskJet 550C, Epson Stylus, Canon BJC. An optional, internal, high- resolution graphics printer is also available for screen dumps; a stripchart output format with 2 meters per division is also possible.
• Output Formats：ASCII waveform out-put is available in seconds, compatible with spreadsheets, MATLAB, MathCad. Binary output is also available.

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