9370 Series Digital Oscilloscopes
1 GHz Bandwidth, 2 GS/s
Main Features
- Up to 8M Point record length
- 8-bit vertical resolution, 11 with ERES option
- Two and Four Channel versions
- Portable Hard Disk (PCMCIA III), Memory Card and DOSCompatible Floppy Disk options
- Innovative Peak Detect
- Glitch, Pattern, Qualified, Interval, Dropout and TVTriggers
- Fully programmable via GPIB and RS-232-C
- Internal Graphics Printer Option
- Automatic PASS/FAIL testing
- Advanced Signal Processing
- 1 GHZ BANDWIDTH
The 9370 series digital storage oscilloscope opens up newhorizons for engineers and scientists at the leading edge oftechnological developments. With 1 GHz bandwidth and longacquisition memories, it is now possible to reveal previouslyhidden waveform details. Narrow glitches are more accuratelydefined; risetime measurements below 1 nanosecond are more precise;and high-frequency content, filtered out in lower bandwidthsystems, is retained, thereby preserving signal amplitudes andoverall signal integrity.
2 GS/S SAMPLE RATE
The two and four channel models of the 9370 series samplesimultaneously on all channels at 500 MS/s. Thus, they are idealfor demanding high speed applications. In addition, two channelscan be combined to provide a sample rate of
1 GS/s. The 9374 provides 2 GS/s in single channel mode. Finerhorizontal resolution and accuracy are guaranteed by high samplerates. This is especially critical in digital design whereunpredictable circuit behavior has to be identified and analyzed indetail to be fully understood. Together with this excellentsingle-shot performance the 9370 series also provides a sample rateequivalent to 10 GS/s for repetitive signals.
8M POINTS ACQUISITION MEMORY
Channel memory lengths of 50k, 250k and 2M are available on thetwo and four channel 9370 DSOs. The memory power is revealed whenthe user seeks to sample at the highest speed over many timebasesettings. Short memory DSOs may boast a high sample rate for shortwaveforms, but only a long memory oscilloscope can deliver highsample rates for long waveforms. To exploit this capability to itsfullest the LeCroy 9370 series combines its channel acquisitionmemories to give the user up to 8 million sample points, therebyproviding the waveform detail required on long and complex signals.
The combined capabilities of the 9370 series place it in theforefront of DSO capability.
ACQUISITION SYSTEM
Bandwidth (-3 dB):
@ 50 Ohms: DC to 1 GHz 10 mV/div and above
@ 1 M Ohm DC: DC to 500 MHz typ. at probe tip, with PP004supplied standard. 1 GHz FET probe optional.
No. of Channels: 4 (9374) or 2 (9370)
No. of Digitizers: 4 (9374) or 2 (9370)
Maximum Sample Rate and Acquisition Memories:See table below.
Sensitivity:
2 mV/div to 1 V/div, 50 Ohms, fully variable
2 mV/div to 10 V/div, 1M Ohm, fully variable.
Scale factors: A wide choice of probeattenuation factors are selectable.
Offset Range:
2.00 - 4.99 mV/div: ±400 mV
5.00 - 99 mV/div: ±1 V
0.1 - 1.0 V/div: ±10 V
1.0 - 10V/div: ± 100 V (1M Ohm only)
DC Accuracy: Typically 1% for DC gain andoffset at 0V.
Vertical Resolution: 8 bits.
Bandwidth Limiter: 20 MHz, 200 MHz.
Input Coupling: AC, DC, GND.
Input Impedance: 1M Ohm//15 pF or 50 Ohms ±1%.
Max Input:
1 M Ohm: 400 V (DC+peak AC @10 kHz)
50 Ohms: ±5 V DC (500 mW) or 5 V RMS
TIME BASE SYSTEM
Timebases: Main and up to 4 Zoom Traces.
Time/Div Range: 1 ns/div to 1,000 s/div.
Clock Accuracy: < or equal to10 ppm
Interpolator resolution: 10 ps
Roll Mode: Ranges 500 ms to 1,000 s/div.
For > 50k points: 10 s to 1,000 s/div.
External Clock: < or equal to100 MHz on EXTinput with ECL, TTL or zero crossing levels. Optional 50 MHz to 500MHz rear panel fixed frequency clock input.
External Reference: Optional 10 MHz rear-panelinput.
TRIGGERING SYSTEM
Trigger Modes: Normal, Auto, Single, Stop.
Trigger Sources: CH1, CH2, Line, Ext,
Ext/10 (9374: CH3, CH4). Slope, Level and Coupling for eachsource can be set independently.
Slope: Positive, Negative.
Coupling: AC, DC, HF, LFREJ, HFREJ.
Pre-trigger recording: 0 to 100% of full scale(adjustable in 1% increments).
Post-trigger delay: 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 events.
Internal Trigger Range: ±5 div.
EXT Trigger Max Input:
1 M Ohm//15 pF: 250 V (DC + peak AC < or equal to10 kHz)
50 Ohms ±1%: ±5 V DC (500 mW) or 5 V RMS
EXT Trigger Range: ±0.5 V (±5 V with Ext/10)
Trigger Timing: Trigger Date and Time arelisted in the Memory Status Menu.
Trigger Comparator: Optional ECL rear paneloutput.
SMART TRIGGER TYPES
Pattern: Trigger on the logic AND of 5 inputs -CH1, CH2, CH3, CH4, and EXT Trigger, (9370: 3 inputs - CH1, CH2,EXT) 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 specifiedpattern.
Signal or Pattern Width: Trigger on widthbetween two limits selectable from 2.5ns to 20s. Will typicallytrigger on glitches 1ns wide.
Signal or Pattern Interval: Trigger on intervalbetween two limits selectable from 10ns to 20s
Dropout: Trigger if the input signal drops outfor longer than a time-out from 25ns to 20s.
State/Edge Qualified: Trigger on any sourceonly if a given state (or transition) has occurred on anothersource. The delay between these events can be defined as a numberof 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 nonstandardvideo.
ACQUISITION MODES
Random Interleaved Sampling (RIS):
For repetitive signals from 1 ns/div to 5 ms/div.
Single shot: For transient and repetitivesignals from 10 ns/div (all channels active).
Peak detect: Captures and displays 2.5 nsglitches or other high-speed events.
Sequence: Stores multiple events in segmentedacquisition memories.
Number of segments available:
9370-9374 .................2-200
9370M-9374M ............2-500
9370L-9374L ...........2-2,000
Max. Dead Time between segments: 100 µs
DISPLAY
Waveform style: Vectors connect the individualsample points, which are highlighted as dots. Vectors may beswitched off.
CRT: 12.5x17.5 cm (9" diagonal) raster.
Resolution: 810 x 696 points.
Modes: Normal, X-Y, Variable or InfinitePersistence.
Real-time Clock: Date, hours, minutes, seconds.
Graticules: Internally generated; separateintensity control for grids and waveforms.
Grids: 1, 2 or 4 grids.
Formats: YT, XY, and both together.
Vertical Zoom: Up to 5x Vertical Expansion (50xwith averaging, up to 40 mV sensitivity, only with WP01).
Maximum Horizontal Zoom Factors:
9370-9374 ................2,000x
9370M-9374M ..........10,000x
9370L-9374L ............80,000x
Waveforms can be expanded to give
2-2.5 points/division. This provides zoom factors up to 400,000xfor the 9374L when channels are combined.
AUTOMATIC MEASUREMENTS
The following Parametric measurements are available, togetherwith statistics of their Average, Highest, Lowest values andStandard Deviation:
amplitude t at level (t=0,abs) overshoot +
area t at level (t-0%) overshoot -
base duty cycle peak to peak
cmean falltime period
cmedian f80-20% risetime
crms f@level (abs) r20-80%
csdev f@level (%) r@level (abs)
cycles frequency r@level (%)
delay maximum RMS
delay mean std dev
t at level (abs) median top
t at level (%) minimum width
Parameters are calculated as defined by ANSI/IEEE Std 181-1977"Standard on Pulse Measurement and Analysis by ObjectiveTechniques". In addition, Rise and Fall times may be measured at 10% and 90% levels, or 20% and 80% levels, or any otheruser-specified levels.
delay provides time between midpoint transition of two sources,for making propagation delay measurements.
t at level allows the same measurement to be made at anyspecified level.
Two cursors are used to define the region over which theseparameters are calculated.
Relative Time: Two cursors provide timemeasurements with resolution of ±0.05% full scale for unexpandedtraces; up to 10 % of the sampling interval for expanded traces.The corresponding frequency value is also displayed.
Relative Voltage: Two horizontal bars measurevoltage differences up to ±0.2% of fullscale in single-grid mode.
Absolute Time: A cross hair marker measurestime relative to the trigger, and voltage with respect to ground.
Pass/Fail testing allow up to five of thelisted parameters to be tested against selectable thresholds.Waveform Limit Testing is performed using templates which may bedefined inside the instrument.
INTERNAL MEMORY
Waveform Memory: Up to four 16-bit Memories(M1, M2, M3, M4).
Processing Memory: Up to four 16-bit WaveformProcessing Memories (A, B, C, D).
Setup Memory: Four non-volatile memories.Optional Cards or Disks may also be used for high-capacity waveformand setup storage.
WAVEFORM PROCESSING
Up to four processing functions may be performed simultaneously.Functions available are: Add, Subtract, Multiply, Divide, Negate,Identity, Summation Averaging and Sin (x)/x.
Average: Summed averaging of up to 1,000waveforms in the basic instrument. Up to 106 averages are possiblewith Option WP01.
Extrema*: Roof, Floor, or Envelope values from1 to 106 sweeps.
ERES*: Low-Pass digital filter provides up to11 bits vertical resolution.
Sampled data is always available, even when a trace is turnedoff.
Any of the above modes can be invoked without destroying thedata.
FFT*: Spectral Analysis with five windowingfunctions and FFT averaging.
*Extrema and ERES modes are provided in Math Package WP01. FFTis in WP02.
AUTOSETUP
Pressing Autosetup sets timebase, trigger and sensitivity todisplay a wide range of repetitive signals. (Frequency above 50Hz;Duty cycle greater than 0.1%).
Autosetup Time: Approximately 2 seconds.
Vertical Find: Automatically sets sensitivityand offset.
PROBES
Model:
One PP004 (10:1, 10 M Ohms // 10 pF) probe supplied per channel.200 V max input.
The 9370 series is fully compatible with LeCroy's range of FETProbes, which may be purchased separately.
Probe calibration: Max 1 V into 1 MW,
500 mV into 50 W, frequency and amplitude programmable, pulse orsquare wave selectable, rise and fall time 1 ns typical.
Alternatively, the Calibrator output can provide a triggeroutput or a PASS/FAIL test output.
INTERFACING
Remote Control: Possible by GPIB and RS-232-Cfor all front-panel controls, as well as all internal functions.
RS-232-C Port: Asynchronous up to 19200 baudfor computer/terminal control or printer/plotter connection.
GPIB Port: (IEEE-488.1) Configurable astalker/listener for computer control and fast data transfer.Command Language complies with requirements of IEEE-488.2.
Centronics Port: Optional hardcopy parallelinterface is provided with floppy and graphics printer options.
Hardcopy: Screen dumps are activated by afront-panel button or via remote control. TIFF and BMP formats areavailable for importing to Desktop Publishing programs. Thefollowing printers and plotters can be used to make hardcopies: HPDeskJet (color or BW), HP ThinkJet, QuietJet, LaserJet, PaintJetand EPSON printers; HP 7470 and 7550 plotters, or similar, and HPGLcompatible plotters. An optional internal high resolution graphicsprinter is also available.
GENERAL
