LeCroy LW420A

LeCroy LW420A
LeCroy
WaveStation
LW410B/LW420B
Arbitrary
Waveform
Generator
MAIN FEATURES
• 100 ps Feature Placement
and Single Point Resolution
• 1 and 2 Channels Versions
• Generate Complex, Phase
Synchronized Signals on Two
Channels.
• Continuously Variable Sample
Clock From 6 MHz to 400
MHz with 1 Hz Resolution
• Stand Alone Design, no PC
Required
• 8 Bits of Vertical Resolution
• Up to 1 Mbyte of Playback
Waveform Memory per
Channel
• FastSwitch Group Sequence
Test Mode Provides Random
Access to Sequences With an
Access Time of Under 11 ms
• Internal Disk Drives for
Project, Sequence, and
Waveform Storage
LeCroy's LW420B WaveStation™ is a
dual-channel, 400 MS/s arbitrary waveform generator (AWG) that brings
together high performance with the
flexibility and capability needed to
quickly generate long, complex waveforms. WaveStation offers more than
just great technical specifications. It
provides a high level of functionality
and ease of use while eliminating
many of the traditional obstacles of
AWGs.
Building on over 11 years of experience in the design and manufacture of
high-performance digital storage oscilloscopes and signal sources, LeCroy's
WaveStation combines innovative signal
processing, high-performance design,
and human factors engineering to provide a truly intuitive and highly interactive arbitrary waveform generator.
• Digital Output Option
Provides 8-Bit TTL and ECL
Digital Outputs
Corresponding to the Wave
on the Analog Output. Special
Digital Editing Mode Useful
in Creating Data Patterns.
• CE, UL and cUL Certified
http://www.lecroy.com/signal_sources
THE CHOICE IS YOURS:
SPECIFY THE WAVEFORM,
AND LET THE LW420B
HANDLE THE DETAILS OR
TAKE CONTROL YOURSELF
With the WaveStation, you need no
awareness of the sample clock period
or the particular reconstruction filter
being used. All the LW420B needs is
your waveform’s time and voltage relationships. No matter which of the many
available tools you use to specify the
waveform, the LW420B will generate
the output using the optimum combination of sample clock rate and filter
bandwidth. The filters automatically
selected will assure that aliasing does
not take place and that all the timing
relationships within the waveform will
be precisely maintained. Full control of
the clock and bandwidth filters is there
for those who need it.
LW 4 1 0 A / 4 2 0 A AW G S
• Live Control of Edge Timing
and Pulse Amplitude While
Viewing Output Wave
FEATURES & BENEFITS
REAL-TIME WAVEFORM
MANIPULATION LETS
YOU QUICKLY CONTROL
THE WAVESHAPE—EASILY
AND INTERACTIVELY—
WHILE VIEWING ON THE
INTERNAL CRT DISPLAY
Select a section of the waveform using
the time cursors, then select one of a
set of waveform manipulation operations (e.g. move feature, delay, amplitude) and turn the knob! That is how
easy it is to continuously modify all or
part of a waveform. Time shifts, as
small as 100 ps, amplitude variations
on a peak, or changes in signal duration are instantly reflected in the output
signal. Margin testing or characterization, with the most complex waveforms, has never been so easy.
SIGNAL SOURCES
WAVEFORM CREATION HAS
NEVER BEEN EASIER
Waveforms can be selected from
libraries of traditional functions or
application specific waveforms. They
can also be created using equations or
imported from external sources such as
oscilloscopes, or from computer programs and simulator output files. Once
waveforms are created or captured,
they can be further modified using
internal waveform (array) math processing. The waveform math functions
include basic arithmetic operations,
smoothing, integration, differentiation,
and convolution.
The highly developed waveform editing capability uses advanced signal
processing to provide bandlimited cut,
paste, insert and offset operations with
minimal editing artifacts. Single sample
resolution, further simplifying waveform creation, is allowed since waveforms are not constrained to 8 sample
multiples as with most other AWGs.
To simulate real-world signals, the
internal, asynchronous, wide-band
noise generator is easily used to add
controlled amounts of noise to your
signals—simply dial in the noise level
as a percentage of your signal’s amplitude. A real timesaver is that if you
vary the signal’s amplitude, the signalto-noise ratio is maintained.
FLEXIBLE WAVEFORM
IMPORT AND TRANSFER
Pull waveforms directly from most digital scopes; Connect a GPIB cable
between the LW420B and your digital
oscilloscope. Select your scope from a
list of commonly available models and
begin importing waveforms.
Waveforms of up to 1 Mpoints in ASCII
or from programs such as MathCad,
MATLAB, PSPICE, IQSIM, TOPSIM and
others can be imported from the floppy
drive. You can also use a shareware
program from LeCroy to convert your
files to DIF format and transfer directly
over the GPIB to the LW420B.
When importing or transferring files,
you have the choice of over sampling
or importing the points exactly as they
are. Once in the WaveStation, all the
modification, editing and math tools
can be used to put the waveform in
the shape you need for your task.
FAST SWITCH GROUP
SEQUENCE INCREASES TEST
FLEXIBILITY AND
MINIMIZES TEST TIME
LeCroy’s Fast Switch Group Sequence
capability enables you to switch
between many different pre-loaded
waveforms in less then 11 ms.
Waveforms will continually play until a
sequence advance is received from the
front panel or a remote command.
Choose to auto advance from sequence
to sequence or choose to jump to the
nth sequence in the group. Generate a
continuous output of a sequence
selected from the group, or use the
external trigger input to initiate a burst
or single shot of the selected sequence.
DIGITAL OUTPUT OPTION
The Digital Output option provides
8-bit TTL and ECL digital outputs corresponding to the current value of the
Channel–1 analog output. The latched
digital data is held for the duration of
the sample clock. The digital data,
including the sample clock and its
complement, are available via rearpanel connectors. The special digital
editing mode is useful for creating and
editing byte wide data patterns or
selected bits and the standard “cut and
paste” tools available for analog waveforms can also be used.
400 MS/S MAXIMUM
CLOCK RATE, 1 MPOINT
WAVEFORMS, AND
SYNTHESIZER TIMEBASE
WITH TWO PHASESYNCHRONIZED CHANNELS
A maximum sample rate of 400 MS/s,
up to 1 Mbyte of waveform memory, a
precise timebase, and single point resolution gives you the power you need
to generate the most demanding, complex stimuli. The timebase combining
3 ppm accuracy and 1 ppm/year stability assures that the waveforms you test
your systems with next year will be the
same as the ones you use today. Low
single sideband phase noise and a
1 Hz frequency resolution over a continuous 6 kHz–400 MHz range provide
the flexibility and capability needed to
generate even the most complex and
demanding waveforms.
FULLY INTEGRATED AWG
INCLUDES HIGH
PERFORMANCE PROCESSOR,
INTERNAL HARD DISK
DRIVE, AND BUILT-IN 9
INCH CRT
WaveStation provides all the power
needed to work with long and complex waveforms. A built-in hard disk
drive, a 486 processor, up to 24 Mbytes
of RAM, and a large internal monochrome VGA display make the LW420A
a fast, responsive instrument ideally
suited for the interactive graphical
operations required in a high-performance AWG.
Settling time: <50 ns to within 2% of
step size at widest bandwidth.
GENERATOR MODE
Standard Function Waveforms
Sine, 1 Hz–100 MHz
Square, 1 Hz–50 MHz
Triangle, 1 Hz–25 MHz
Ramp, 1 Hz–25 MHz
Pulse, (period) 20 ns - max. memory
DC
Frequency Sweep, Linear / Log
Multitone, 1–10 tones,
1 Hz–100 MHz
Special Waveform Generation Mode
IMD - Intermodulation distortion test
waveform: Select center frequency,
1-15 tone pairs, tone spacing, resolution, offset from center frequency.
Inter-channel crosstalk: <1%
WAVEFORM OUTPUT
CHARACTERISTICS
Output channels:
LW410A – 1 Channel
LW420A – 2 Channel
Output Impedance: 50 Ω, ±5%
DC Accuracy:
2% ±40 mV > 500 mV
2% ±15 mV < 500 mV
Vertical resolution: 8 bits
ARBITRARY FUNCTIONS
Minimum output voltage:
10 mV p-p into 50 Ω
Waveform Creation
Interactive Graphical editor on
internal 9” diagonal CRT—8.5”
viewable.
Maximum output voltage:
10 V p-p into 50 Ω
Standard Functions
Sine, Square, Triangle, Ramp,
Pulse, DC
Feature Time Resolution:
100 ps @ 400 MHz
Available memory:
256 k/ch standard
1 Mpoint optional
SEGMENTED WAVEFORMS
Minimum segment length: 64 points
Maximum segment length:
Up to available memory (1 Mpoint with
memory option installed).
Segment length resolution: 1 point
Number of links:
512 for 256k memory
2048 for 1M memory
Offset voltage resolution: 0.05% of
full scale
Output protection: ±20 V
Output filtering: Gaussian filters with
the following cutoff frequencies can be
selected; 100 MHz , 10 MHz, 1 MHz ,
100 kHz , 10 kHz
SAMPLE CLOCK
CHARACTERISTICS
(with internal 10 MHz reference)
Sample Clock: 6 kHz–400 MHz
Resolution: 1 Hz
Accuracy: <3 ppm over operating temperature range.
Stability: aging <1 ppm/year
SSB Phase Noise: < -90 dBc/Hz @ 10
KHz offset for a 10 MHz sine wave at
the output
Output bandwidth: 100 MHz (-3dB)
(widest bandwidth)
TRIGGERING
CHARACTERISTICS
Total harmonic distortion:
For sinusoidal output of <5 V p-p;
Trigger slope: Positive or Negative
Trigger input impedance: 50 Ω ± 5%
Threshold range: ±2.5V
Threshold resolution: 20 mV
Threshold accuracy: 100 mV
Threshold sensitivity: 50 mV p-p
Minimum pulse width: 5 ns
Protection: ±5 V
< -45 dBc (-50 dBc typical) for
frequencies: <1MHz
< -35dbc (< -45 dBc typical) for
frequencies: 1 MHz–20 MHz
< -25 dBc (< -40 dBc typical) for
frequencies: >20MHz–50 MHz,
predominantly 2nd harmonic
TRIGGER MODES
Continuous: Runs continuously
Spurious & non-harmonic
distortion:
< -60 dBc for frequencies <1 MHz
Signal-to-noise ratio: >40 dB (-45 typical) for output amplitudes >100 mV @
0 offset
Transition times: 5.0 ns, 10%–90% at
widest bandwidth.
Overshoot and ringing: <8% of step
size max. 3% typical
Single: Outputs 1 repetition of the
waveform for each trigger received.
Triggers received while the waveform
is still running are ignored.
Burst: Outputs the selected waveform
a programmable number of times in
response to a trigger. The maximum
number of repetitions for a burst is
4,095. Triggers received while the burst
is running are ignored.
Gated: The waveform starts on the
http://www.lecroy.com/signal_sources
LW 4 1 0 A / 4 2 0 A AW G S
Equation Editor
Waveform (array) Math
Waveform Import From
Digital Oscilloscope
Floppy Disk
Offset voltage range: ±5 V into 50 Ω.
The output voltage (signal + offset)
must be in the range ±5 V into 50Ω.
Ch 1 to Ch 2 skew: <1 ns for identical
waveforms in each channel (widest
bandwidth).
leading edge of the gate signal and
stops on completion of the waveform
cycle occurring at the trailing edge of
the gate signal.
External 10 MHz reference: Rear
panel BNC connector for input of an
external reference clock. 400 mV p-p
to 5 V p-p into 50 Ω.
TRIGGER DELAY
AUXILIARY OUTPUTS
Minimum delay time: 35 ns ±3.5 ns
+5 sample clocks (fixed)
10 MHz reference: ± 3 ppm accuracy
Amplitude (high): 1.6 V into 50 Ω.
Amplitude (low): 0.2 V into 50 Ω.
Maximum delay time: 10 s at highest
clock rate to 100k s at lowest clock
rate.
Delay resolution: 1 sample clock.
Delay is in units of seconds. When
operating from the front panel, the resolution is set in increments of the sample clock period.
Delay accuracy: Same as sample clock
+ minimum delay time.
Delay jitter: 1 sample clock.
TRIGGER SOURCES
SIGNAL SOURCES
Manual: Front panel push-button.
External: Front panel BNC connector.
GPIB: A trigger command may be
issued over the GPIB bus.
MASS STORAGE
Markers: Select Edge or Clock
Edge: 1 bit memory—set up to 128
edge transitions—ECL or TTL levels
Clock: Frequency up to one half the
sample clock rate.
PROGRAMMABILITY
GPIB IEEE 488.2 compatible.
Compliant with SCPI programming language. Capable of initiating and controlling waveform transfer from digital
oscilloscopes by simply connecting a
GPIB cable (no computer required).
MECHANICAL
Dimensions:
14.92”W x 7.67”H x 19.58”D
(37.9 cm x 19.5 cm x 49.7 cm)
Weight: 27.6 lbs (12.5 kilograms)
Protection: Outputs protected to ±5 V.
Channel 1 Digital Output Optional:
8 bits and clock with TTL and ECL
logic levels available simultaneously.
Noise In: From rear panel BNC
connectors.
ENVIRONMENTAL
Temperature: 5º to 35º full specifications; 0º to 40ºC operating;
-20º to 70ºC non-operating.
Humidity: 10% to 90% relative, noncondensing
HARD COPY OUTPUTS
POWER:
Supported Printers include:
Epson MX/FX
Epson LQ
HP LaserJet II
HP ThinkJet
Autosensing
90-132/180-250 V AC
47-63 Hz
4 amps @ 115 V AC
(20 amps cold start surge)
3.5” 1.44 MB DOS format floppy drive
400 MB internal hard disk drive.
2 amps @ 230 V AC
(40 amps cold start surge)
AUXILIARY INPUTS
Warranty: One Year
LW400 SERIES - ORDERING INFORMATION
WAVEFORM GENERATORS:
PRODUCT CODE
Single Channel 400 MS/s Arbitrary Waveform Generator
1 Megasample memory - 1 channel
Dual Channel 400 MS/s Arbitrary Waveform Generator
1 Megasample memory - 2 channels
Rackmount Adapter for LW410/420
Transit Case for LW410/420
Soft Carrying Case for LW410/420
Operators Manual for LW410/420 - Included with LW410/420
Remote Programming Manual for LW410/420 - Incl. with LW410/420
Service Manual for LW410/420
Digital Output - Channel 1 Only
5 NIST Calibrations on any LW400 Series AWG
NIST Calibration on LW400 Series
MIL-STD Calibration on LW400 Series
5 Year Warranty and NIST Calibration on LW400 Series
5 Year Warranty on LW400 Series AWG
5 Year Warranty and MIL-STD 45662A Calibration on LW400 Series
LW410B
LW410-ME2
LW420B
LW420-ME2
LS-RM
LS-TRANS
LS-SOFT
LW400-OM
LW400-RPG
LW400-SM
LW400-09A
LW4XX-C5
LW4XX-CC
LW400-CCMIL
LW4XX-T5
LW4XX-W5
LW4XX-R5/MIL
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising