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Vertical System
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LT264 /M |
LT262 |
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Input Channels |
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4 |
2 |
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Analog Bandwidth @ 50 Ohms (-3 dB) |
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350 MHz |
350 MHz |
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Hardware Bandwidth Limits |
20 MHz, 200 MHz |
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Input Impedance |
50 Ohms ± 1%; 10 MOhms / 12 pF typical (using PP006 probe) |
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Input Coupling |
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) |
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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 |
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DC Gain Accuracy |
± (1.5% + 0.5% of full scale) |
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Offset Accuracy (50 ohm or 1 M ohm) |
± (1.5% + 0.5% of full scale + 1 mV) |
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Offset Range |
2 mV ? 99 mV/div: ± 1 mV
100 mV ? 99 mV/div: ± 10 V
1V ? 10 V/div: ±100 V |
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Isolation Channel-to-Channel |
> 250:1 at same V/div settings |
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Timebase System |
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Timebases |
Main and up to four independent zoom traces simultaneously |
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Ranges |
500 ps/div ? 1000 s/div |
1 ns/div ? 1000 s/div |
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Clock Accuracy |
<=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 |
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. |
4 GS/s |
4 GS/s |
1 GS/s |
1 GS/s |
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2 Channels Max. |
4 GS/s |
2 GS/s |
1 GS/s |
1 GS/s |
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3 ? 4 Channels Max. |
2 GS/s |
NA |
1 GS/s |
NA |
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Maximum Acquisition Points/Ch |
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1 Channel Max. |
500k / 2M / 8M |
500k |
100k / 1 M |
100k |
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2 Channel Max. |
500k / 2M / 8M |
250k |
100k / 1 M |
100k |
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3 - 4 Channel Max. |
250k / 1M / 4M |
NA |
100k / 1 M |
NA |
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Acquisition Modes |
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Random Interleaved Sampling (RIS) |
50 GS/s for repetitive signals: 200 ps/div ? 1 µs/div |
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Single-Shot |
For transient and repetitive signals: 1 ns/div ? 1000 s/div |
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Sequence |
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LT262 / 264 |
2 ? 400 segments |
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LT372 / 374 |
2 ? 1000 segments |
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Memory Option M or L |
2 ? 400 segments |
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Intersegment Time |
50 µsec max. |
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Acquisition Processing |
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) |
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Enhanced Resolution (ERES) |
From 8.5 to 11 bits vertical resolution |
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Envelope (Extrema) |
Envelope, floor, roof for up to 10 6 sweeps |
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Triggering System |
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Modes |
Normal, Auto, Single, and Stop |
Sources
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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 |
AC Cutoff Frequency
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7.5 Hz Typical
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HFREJ, LFREJ
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50 kHz typical |
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Pre-trigger delay |
0 ? 100% of horizontal time scale
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Post-trigger delay |
0 ? 10000 divisions
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Hold-off by time or events
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Up to 20s or from 1 to 99 999 999 events |
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Internal trigger range |
±5 div |
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Max trigger frequency |
500 MHz (350 MHz on LT264, LT262) |
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External trigger input range |
±0.5 ( ±2.5 V with Ext/5 selected )
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Maximum ext. input @ 50 Ohms |
±5 V DC or 5Vrms
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Maximum ext. input @ 1 MOhms |
400 Vmax ( DC + peak AC < 5 kHz )
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Automatic setup |
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Auto Setup |
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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Probes |
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Model PP0056 |
10 : 1, 10 MOhms with auto-detect (one per channel) |
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Probe System: Probus® |
Automatically detects and supports a wide variety of differential amplifiers; active, high-voltage, current, and differential probes |
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Scale Factors |
Up to 12 automatically or manually selected |
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Color Waveform Display |
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Type |
VGA color 8.4" flat-panel TFT-LCD |
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Resolution |
VGA 640 x 480 pixels |
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Screen Saver |
Display blanks after 10 minutes (when screen saver is ?on?) |
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Real Time Clock |
Date, hours, minutes, and seconds displayed with waveform |
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Number of Traces |
Display a maximum of eight traces. Simultaneously display channel, zoom, memory, and math traces. |
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Grid Styles |
Single, Dual, Quad, Octal, XY, Single + XY, Dual + XY; Full Screen gives enlarged view of each style. |
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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. |
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Trace Overlap Display |
Select opaque or transparent mode with automatic waveform overlap management. |
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Analog Persistence Display |
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Analog & Color-Graded Persistence |
Variable saturation levels; stores each trace?s persistence data in memory. |
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Trace Selection |
Activate Analog Persistence on a selected trace, top 2 traces, or all traces. |
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Persistence Aging Time |
Select from 500 ms to infinity. |
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Trace Display |
Opaque or transparent overlap
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Sweeps Displayed |
All accumulated or all accumulated with last trace highlighted |
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Zoom Expansion Traces
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Display up to Four Zoom Traces |
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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 |
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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 |
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Waveform |
M1, M2, M3, M4 (Store full-length waveforms with 16 bits/data point) |
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Zoom and Math |
Four traces A, B, C, D with chained trace capability |
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Setup Storage |
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Front Panel and Instrument Status |
Four non-volatile memories and floppy drive are standard. Hard drive and memory card are optional. |
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Interface |
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Remote Control |
Full control of all front panel controls and internal functions via RS232C, GPIB, or Ethernet |
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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 |
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PC Card Slot (optional) |
Supports memory and hard drive cards |
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External Monitor Port Standard |
15-pin D-Type VGA-compatible |
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Centronics Port |
Parallel printer interface |
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Internal Graphics Printer (optional) |
Provides hard copy output in <10 seconds |
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Outputs |
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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. |
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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
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Temperature
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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 |
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CE Approved |
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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) |
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UL and cUL approved |
UL Standard UL 3111-1
cUL Standard CSA-C22.2 No. 1010-1 |
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General |
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Auto Calibration |
Ensures specified DC and timing accuracy is maintained for 1 year minimum |
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Auto Calibration time |
<500 ms |
Power Requirements
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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 |
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Battery Backup |
Front panel settings retained for two years minimum |
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Warranty and Calibration |
Three years; calibration recommended yearly |
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Physical Dimensions |
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Dimensions (HWD) |
210 mm x 350 mm x 300 mm; 8.3" x 13.8" x 11.8" (height excludes feet) |
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Weight |
18 lbs (8kg) |
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Shipping Weight |
27 lbs. (12 kg) |