|
|
Vertical System
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LT374 / M
/ L
|
LT372
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LT264
/M
|
LT262
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|
Input Channels
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4
|
2 |
4
|
2 |
|
Analog Bandwidth @ 50 Ohms (-3 dB)
|
500 MHz
|
500
MHz
|
350
MHz
|
350
MHz
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|
Hardware Bandwidth Limits
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20 MHz, 200 MHz
|
|
Input Impedance
|
50
Ohms ± 1%; 10 MOhms / 12 pF typical (using PP006 probe)
|
|
Input Coupling
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1
MOhms : AC, DC,
GND; 50 Ohms : DC, GND
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|
Maximum Input
|
50
Ohms : 5 Vrms; 1 MOhms : 400 Vmax (peak AC <=5 kHz + DC)
|
|
Vertical Resolution
|
8 bits; up to 11 bits with enhanced resolution
(ERES)
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|
Sensitivity (50 ohm or 1 M ohm)
|
2 mV - 10V/div fully variable
|
|
DC Gain Accuracy
|
± (1.5% + 0.5% of full
scale)
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Offset Accuracy (50 ohm or 1 M ohm)
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± (1.5% + 0.5% of full scale + 1 mV)
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|
Offset Range
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2 mV 99 mV/div: ± 1 V
100 mV 999 mV/div: ± 10 V
1V 10 V/div: ±100 V
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Isolation Channel-to-Channel
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> 250:1 at same V/div settings
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|
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Timebase System
|
|
Timebases
|
Main and up to four independent zoom traces simultaneously
|
|
Ranges
|
500 ps/div 1000 s/div
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1 ns/div 1000 s/div
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|
Clock Accuracy
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<=10 ppm
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|
Interpolator Resolution
|
5 ps
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|
External Clock Frequency
|
500 MHz maximum, 50
Ohms, or 1 MOhms impedance
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|
Roll Mode Operating Range
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time/div 500 ms 1000 s/div or sample rate < 100
kS/s max
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External Timebase Clock
|
500 MHz maximum external sample clock input on front panel EXT BNC
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Acquisition System
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|
Single-Shot Sample Rate
|
|
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1 Channel Max.
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4 GS/s
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4 GS/s
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1 GS/s
|
1
GS/s
|
|
2 Channels Max.
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4 GS/s
|
2
GS/s
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1
GS/s
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1
GS/s
|
|
3 4 Channels Max.
|
2 GS/s
|
NA
|
1
GS/s
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NA
|
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Maximum Acquisition Points/Ch
|
|
|
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1 Channel Max.
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500k / 2M / 8M
|
500k
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100k
/ 1 M
|
100k
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2 Channel Max.
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500k / 2M / 8M
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250k
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100k
/ 1 M
|
100k
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3 - 4 Channel Max.
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250k / 1M / 4M
|
NA
|
100k
/ 1 M
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NA
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|
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Acquisition Modes
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Random Interleaved Sampling (RIS)
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50 GS/s for repetitive signals: 200
ps/div 1 µs/div
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Single-Shot
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For transient and repetitive signals:
1 ns/div 1000 s/div
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Sequence
|
|
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LT262 / 264
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2 400 segments
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LT372 / 374
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2 1000 segments
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Memory Option M or L
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2 400 segments
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Intersegment Time
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50 µsec max.
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Acquisition Processing
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Averaging
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Summed averaging to
10 sweeps; continuous averaging with weighting range from 1:1 to 1:1023 (standard).
Summoned averaging up to 10 6 sweeps (optional with WAVA)
|
|
Enhanced Resolution (ERES)
|
From 8.5 to 11 bits vertical resolution
|
|
Envelope (Extrema)
|
Envelope, floor, roof for up to
10 6 sweeps
|
|
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Triggering System
|
|
Modes
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Normal, Auto, Single, and Stop
|
Sources
|
Any input channel, external,
Ext/10 or line; slope, level, and coupling unique to each source (except line trigger)
Inactive channels usable as trigger inputs.
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Slope
|
Positive, Negative, Window
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Coupling modes
|
DC, AC,
HF, HFREJ, LFREJ
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AC Cutoff Frequency
|
7.5 Hz Typical
|
HFREJ, LFREJ
|
50 kHz typical
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|
Pre-trigger delay
|
0 100% of horizontal time scale
|
|
Post-trigger delay
|
0 10000 divisions
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Hold-off by time or events
|
Up to 20s or from 1 to 99 999 999 events
|
|
Internal trigger range
|
±5 div
|
|
Max trigger frequency
|
500 MHz (350 MHz on LT264,
LT262)
|
|
External trigger input range
|
±0.5 ( ±2.5 V with Ext/5 selected )
|
|
Maximum ext. input @ 50 Ohms
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±5 V DC or 5Vrms
|
|
Maximum ext. input @ 1 MOhms
|
400 Vmax ( DC + peak AC < 5 kHz )
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Automatic setup
|
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Auto Setup
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Automatically sets timebase, trigger, and sensitivity to display a wide range of repetitive signals
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Vertical Find
|
Automatically sets the vertical sensitivity and offset for the selected channels to display a waveform with
maximum dynamic range
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|
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Probes
|
|
Model PP006
|
10 : 1, 10
MOhms with auto-detect (one per channel)
|
|
Probe System: Probus®
|
Automatically detects and supports a wide variety of differential amplifiers; active, high-voltage, current, and differential probes
|
|
Scale Factors
|
Up to 12 automatically or manually selected
|
|
|
Color Waveform Display
|
|
Type
|
VGA
color 8.4" flat-panel
TFT-LCD
|
|
Resolution
|
VGA 640 x 480 pixels
|
|
Screen Saver
|
Display blanks after 10 minutes (when screen saver is on)
|
|
Real Time Clock
|
Date, hours, minutes, and seconds displayed with waveform
|
|
Number of Traces
|
Display a maximum of eight traces. Simultaneously display channel, zoom, memory, and math traces.
|
|
Grid Styles
|
Single, Dual, Quad, Octal, XY, Single + XY, Dual + XY; Full Screen gives enlarged view of each style.
|
|
Intensity Controls
|
Separate intensity control for grids and
waveforms
|
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Waveform Styles
|
Sample dots joined or dots only regular or bold sample point highlighting.
|
|
Trace Overlap Display
|
Select opaque or transparent mode with automatic waveform overlap management.
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Analog Persistence Display
|
|
Analog & Color-Graded Persistence
|
Variable saturation levels; stores each traces persistence data in memory.
|
|
Trace Selection
|
Activate Analog Persistence on a selected trace, top 2 traces, or all traces.
|
|
Persistence Aging Time
|
Select from 500 ms to infinity.
|
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Trace Display
|
Opaque or transparent overlap
|
|
Sweeps Displayed
|
All accumulated or all accumulated with last trace highlighted
|
|
Zoom Expansion Traces
|
|
Display up to Four Zoom Traces
|
|
| |
Vertical zoom up to 5X expansion, 50X with averaging
Horizontal zoom expand to 2 pts/div, magnify to 50000X
Auto Scroll automatically scans and displays any zoom or math trace.
|
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Rapid Signal Processing
|
|
Processor
|
PowerPC
|
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Processing Memory
|
Up to 128 Mbytes
|
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Realtime Clock
|
Dates, hours, minutes, seconds
and time stamp trigger time to 1 ns resolution
|
|
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Internal Waveform Memory
|
|
Waveform
|
M1, M2, M3, M4 (Store full-length waveforms with 16 bits/data point)
|
|
Zoom and Math
|
Four traces A, B, C, D with chained trace capability
|
|
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Setup Storage
|
|
Front Panel and Instrument Status
|
Four non-volatile memories and floppy drive are standard. Hard drive and memory card are optional.
|
|
|
Interface
|
|
Remote Control
|
Full control of all front panel controls and internal functions via RS232C, GPIB, or Ethernet
|
|
RS-232-C
|
Asynchronous transfer rate of up to 115.2 kbaud
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GPIB Port
|
Full control via IEEE 4888.2; configurable as talker/listener for computer control and data transfer
|
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Ethernet (optional)
|
10 BaseT Ethernet interface
|
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Floppy Drive
|
Internal, DOS-format, 3.5" high-density
|
|
PC Card Slot (optional)
|
Supports memory and hard drive cards
|
|
External Monitor Port Standard
|
15-pin D-Type VGA-compatible
|
|
Centronics Port
|
Parallel printer interface
|
|
Internal Graphics Printer (optional)
|
Provides hard copy output in <10 seconds
|
|
|
Outputs
|
|
Calibrator Signal
|
500 Hz 1 MHz square wave or
DC level; select from -1.0 to +1.0 Volt into 1
MOhms output on front panel test point and ground lug.
|
|
Control Signals
|
Rear Panel, TTL level BNC
output; Choice of trigger ready, trigger out, pass/fail status. (output
resistance 300 Ohms +- 10%)
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|
|
Environmental and Safety
|
Operating Conditions
|
|
Temperature
|
5 40 °C rated accuracy
0 45 °C operating
-20 60 °C non-operating
|
Humidity
|
80% max RH, non-condensing at
35 °C; Derates to 50% max RH, non-condensing at 45 °C
|
Altitude
|
4500 meters (15 000 feet) max.
up to 25 °C; Derates to 2000 meters (6600 feet) at 45°C
|
|
CE Approved
|
|
|
EMC
|
EMC Directive 89/336/EEC; EN 61326-1 Emissions and Immunity
|
Safety
|
Low Voltage Directive 73/23/EEC; EN 61010-1 Product Safety (Installation Category II, Pollution Degree 2)
|
|
UL and cUL approved
|
UL Standard UL 3111-1
cUL Standard CSA-C22.2 No. 1010-1
|
|
|
General
|
|
Auto Calibration
|
Ensures specified DC and timing accuracy is maintained for 1 year minimum
|
|
Auto Calibration time
|
<500 ms
|
Power Requirements
|
90 132 VAC at 45
440 Hz
180 - 250 VAC at 45 - 66 Hz
Automatic AC voltage selection
Power Consumption: 150 - 230 VA depending on model
|
|
Battery Backup
|
Front panel settings retained for two years minimum
|
|
Warranty and Calibration
|
Three years; calibration recommended yearly
|
|
|
Physical Dimensions
|
|
Dimensions (HWD)
|
210 mm x
350 mm x 300 mm; 8.3" x 13.8" x 11.8" (height excludes feet)
|
|
Weight
|
18
lbs (8kg)
|
|
Shipping Weight
|
27
lbs. (12 kg)
|