DPO7254

概述

技术指标

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Characteristics

Vertical System

Characteristic	DPO7054	DPO7104	DPO7254	DPO7354
Input Channels	4
Bandwidth (DSP Bandwidth Enhance)	500 MHz	1 GHz	2.5 GHz	3.5 GHz*¹
Rise Time (DSP Bandwidth Enhance)	460 ps	300 ps	160 ps	115 ps
Hardware Analog Bandwidth (–3 dB)	500 MHz	1 GHz	2.5 GHz	2.5 GHz
Rise Time 10% to 90% (Typical)	460 ps	300 ps	160 ps	145 ps
Rise Time 20% to 80% (Typical)	310 ps	200 ps	100 ps	95 ps
DC Gain Accuracy	±1% with offset/position set to 0
Bandwidth Limits	Depending on instrument model: 3.0 GHz, 2.5 GHz, 2 GHz, 1 GHz, 500 MHz, 250 MHz, and 20 MHz
Input Coupling	AC, DC, GND
Input Impedance (Software selectable)	1 MΩ ±1% with 13 pF ±2 pF or 50 Ω ±1%
Input Sensitivity	1 MΩ: 1 mV/div to 10 V/div 50 Ω: 1 mV/div to 1 V/div
Vertical Resolution	8 bit (>11 bit with Hi Res)
Max Input Voltage, 1 MΩ	±150 V CAT I, derate at 20 dB/decade to 9 V_RMS above 200 kHz
Max Input Voltage, 50 Ω	5 V_RMS, with peaks less than ±24 V
Position Range	±5 divisions
Offset Range	1 mV/div to 50 mV/div: ±1 V 50.5 mV/div to 99.5 mV/div: ±(1.5 V – 10 divisions) 100 mV/div to 500 mV/div: ±10 V 505 mV/div to 995 mV/div: ±(15 V – 10 divisions) 1 V/div to 5 V/div: ±100 V 5.05 V/div to 10 V/div: ±(150 V – 10 divisions)
Offset Accuracy	1 mV/div to 9.95 mV/div: ±0.2% (offset value-position) ±0.1 div ±1.5 mV 10 mV/div to 99.5 mV/div: ±0.35% (offset value-position) ±0.1 div ±1.5 mV 100 mV/div to 1 V/div: ±0.35% (offset value-position) ±0.1 div ±15 mV 1.01 V/div to 10 V/div: ±0.25% (offset value-position) ±0.1 div ±150 mV
Delay between any Two Channels (Typical)	≤100 ps (50 Ω, DC coupling and equal V/div at or above 10 mV/div)
Channel-to-Channel Isolation (Any two channels at equal Vertical Scale settings) (Typical)	≥100:1 at ≤100 MHz; ≥30:1 between 100 MHz and 2.5 GHz > 20:1 between 2.5 and 3.5 GHz

*¹ 3 GHz for sine wave of more than 4 div amplitude (typically).

Time Base System

Characteristic	DPO7054	DPO7104	DPO7254 / DPO7354
Time Base Range	50 ps/div to 1000 s/div	50 ps/div to 1000 s/div	25 ps/div to 1000 s/div
with Opt. 2SR	—	25 ps/div to 1000 s/div	—
Time Resolution (in ET/IT mode)	500 fs	500 fs	250 fs
with Opt. 2SR	—	250 fs	—
Time Base Delay Time Range	5 ns to 250 s
Channel-to-Channel Deskew	Range ±75 ns
Delta Time Measurement Accuracy	((0.06 / sample rate) + (2.5 ppm × Reading)) RMS
Trigger Jitter (RMS)	1.5 ps_RMS (typical) with enhanced triggering OFF <100 fs_RMS with enhanced triggering ON
Jitter Noise Floor	<1 ps_RMS (<2 ps peak) for record duration <10 μs (typical) <2.5 ps_RMS for record duration <30 ms <65 parts/trillion for record durations <10 s
Time Base Accuracy	±2.5 ppm + Aging <1 ppm per year

Acquisition System

Characteristic	DPO7054	DPO7104	DPO7254 / DPO7354
Real-time Sample Rates
1 Channel (Max)	20 GS/s	20 GS/s	40 GS/s
with Opt. 2SR	—	40 GS/s	—
2 Channels (Max)	10 GS/s	10 GS/s	20 GS/s
with Opt. 2SR	—	20 GS/s	—
3-4 Channels (Max)	5 GS/s	5 GS/s	10 GS/s
with Opt. 2SR	—	10 GS/s	—
Equivalent Time Sample Rate (Max)	4 TS/s (for repetitive signals)
Maximum Record Length per Channel
Standard Configuration	50 M (1-CH), 25 M (2-CH), 12.5 M (4-CH)
Record Length Opt. 2RL	125 M (1-CH), 50 M (2-CH), 25 M (4-CH)
Record Length Opt. 5RL	250 M (1-CH), 125 M (2-CH), 50 M (4-CH)
Record Length Opt. 10RL	—	—	500 M (1-CH) 250 M (2-CH) 125 M (4-CH)

Maximum Duration at Highest Real-time Resolution (1-CH)

Characteristic	DPO7054	DPO7104	DPO7254 / DPO7354
Resolution	50 ps (20 GS/s)	50 ps (20 GS/s)	25 ps (40 GS/s)
with Opt. 2SR	—	25 ps (40 GS/s)	—
Max Duration with Standard Record Length and Sample Rate	2 ms	2 ms	1 ms
with Opt. 2SR	—	1 ms	—
Max Duration with Opt. 2RL	4 ms	4 ms	2 ms
with Opt. 2SR	—	2 ms	—
Max Duration with Opt. 5RL	10 ms	10 ms	5 ms
with Opt. 2SR	—	5 ms	—
Max Duration with Opt. 10RL	—	—	10 ms

Acquisition Modes

Mode	DPO7054 / DPO7104 / DPO7254 / DPO7354
FastAcq Acquisition Mode	FastAcq optimizes the instrument for analysis of dynamic signals and capture of infrequent events
Maximum FastAcq Waveform Capture Rate	>250,000 wfms/s on all 4 channels simultaneously
Waveform Database	Accumulate waveform database providing three-dimensional array of amplitude, time, and counts
Sample	Acquire sampled values
Peak Detect	Captures narrow glitches at all real-time sampling rates: 1/sample rate at ≤10 GS/s
Averaging	From 2 to 10,000 waveforms included in average
Envelope	From 1 to 2×10⁹ waveforms included in min-max envelope
Hi-Res	Real-time boxcar averaging reduces random noise and increases resolution
FastFrame™ Acquisition	Acquisition memory divided into segments; maximum trigger rate >310,000 waveforms per second. Time of arrival recorded with each event. Frame finder tool helps to visually identify transients
Roll Mode	Scrolls sequential waveform points across the display in a right-to-left rolling motion. Up to 10 MS/s with a maximum record length of 40 M

Pinpoint^® Trigger System

Characteristic	DPO7054 / DPO7104 / DPO7254 / DPO7354
Sensitivity
Internal DC Coupled	0.7 div DC to 50 MHz increasing to 1.2 div at rated analog bandwidth (typical); 2.5 div at 3.5 GHz with DSP bandwidth enhance
External (Auxiliary Input) 1 MΩ	250 mV from DC to 50 MHz increasing to 350 mV at 250 MHz (typical)
Trigger Characteristics
A Event and Delayed B Event Trigger Types	Edge, Glitch, Runt, Width, Transition Time, Time-out, Pattern, State, Setup/Hold, Window – all except Edge, Pattern, and State can be Logic State qualified by up to two channels
Low-speed Serial Protocol Trigger Type (A event only)	I²C, SPI, and RS-232 (standard). CAN bus available as Opt. LSA. Trigger on address, data, and special handshaking states and other conditions
Main Trigger Modes	Auto, Normal, and Single
Enhanced Triggering	User-selectable; it corrects the difference in timing between the trigger path and the acquired data path (it supports all Pinpoint trigger types on both A and B events except pattern trigger and not available in FastAcq)
Trigger Sequences	Main, Delayed by Time, Delayed by Events, Reset by Time, Reset by State, Reset by Transition. All sequences can include separate horizontal delay after the trigger event to position the acquisition window in time
Communications-related Triggers	Requires Opt. MTM. Support for AMI, HDB3, BnZS, CMI, MLT3, and NRZ encoded communications signals. Select among isolated positive or negative one, zero pulse form, or eye patterns as applicable to the standard
Serial Pattern Trigger	On DPO7254 or DPO7354 only, and requires Opt. PTM. Up to 64 bit serial word recognizer, bits specified in binary (high, low, don't care) or hex format. Trigger on NRZ-encoded data up to 1.25 Gb/s
Video-type Trigger Formats and Field Rates	Triggers from negative sync composite video, field 1, or field 2 for interlaced systems, any field, specific line, or any line for interlaced or noninterlaced systems. Supported systems include NTSC, PAL, SECAM, and HDTV 1080/24sF, 1080p/25, 1080i/50, 1080i/60, 1080p/24, 720p/60, 480p/60
Clock Recovery System	On DPO7254 or DPO7354 only and requires Opt. PTM or MTM
Clock Recovery Phase Locked Loop Bandwidth	Fixed at FBaud/500
Frequency Range	1.5 MBaud to 1.25 GBaud
Clock Recovery Jitter (RMS)	20 ps_RMS + 1.25% Unit Interval RMS for PRBS data patterns. 20 ps_RMS + 1.25% Unit Interval RMS for repeating "0011” data pattern.
Tracking/Acquisition Range	±5% of requested baud (typical)
Minimum Signal Amplitude Needed for Clock Recovery	1 div_p-p up to 1.25 GBaud (typical)
Trigger Level Range Internal	±12 divisions from center of screen
Aux Trigger	TekVPI interface; ±5 V (50 Ω); 150 V CAT I, derate at 20 dB/decade to 9 V_RMS above 200 kHz (1 MΩ)
Line	Fixed at 0 V trigger level
Trigger Coupling	DC, AC (attenuates <60 Hz), HF Rej (attenuates >30 kHz), LF Rej (attenuates <80 kHz), Noise Reject (reduces sensitivity)
Trigger Holdoff Range	250 ns min to 12 s max

Trigger Modes

Mode	Description
Edge	Positive or negative slope on any channel or front-panel auxiliary input. Coupling includes DC, AC, noise reject, HF reject, and LF reject
Glitch	Trigger on or reject glitches of positive, negative, or either polarity. Minimum glitch width is down to 170 ps (typical) with rearm time of 250 ps (for DPO7254 or DPO7354)
Width	Trigger on width of positive or negative pulse either within or out of selectable time limits (down to 225 ps)
Runt	Trigger on a pulse that crosses one threshold but fails to cross a second threshold before crossing the first again. Event can be time or logic qualified
Time-out	Trigger on an event which remains high, low, or either, for a specified time period. Selectable from 300 ps
Transition	Trigger on pulse edge rates that are faster or slower than specified. Slope may be positive, negative, or either
Setup/Hold	Trigger on violations of both setup time and hold time between clock and data present on any two input channels
Pattern	Trigger when pattern goes false or stays true for specified period of time. Pattern (AND, OR, NAND, NOR) specified for four input channels defined as high, low, or don't care
State	Any logical pattern of channels (1, 2, 3) clocked by edge on channel 4. Trigger on rising or falling clock edge
Window	Trigger on an event that enters or exits a window defined by two user-adjustable thresholds. Event can be time or logic qualified
Trigger Delay by Time	5 ns to 250 s
Trigger Delay by Events	1 to 10,000,000 events
Comm	Provided as part of Opt. MTM. Support for AMI, HDB3, BnZS, CMI, MLT3, and NRZ encoded signals
I²C, SPI, and RS-232	Protocol trigger on DPO7054, DPO7154, DPO7254, or DPO7354
CAN	Basic protocol trigger on DPO7054, DPO7154, DPO7254, or DPO7354 as part of Opt. LSA. Optional ATM-1 module adds LIN and advanced CAN triggering
Serial Pattern (Option PTM)	Captures serial data stream with built-in clock recovery for NRZ standards up to 1.25 Gb/s. Extended with pattern lock triggering to capture repeated acquisitions of long serial test patterns

Search and Mark Events

Event	Description
Basic	Mark any events and document waveforms. Search positive, negative slopes or both on any channels. Event table summarizes all found events. All events are time stamped in reference to trigger position. Users can choose to stop acquisitions when an event is found
Advanced	Search glitches or runts, as well as transition rate, pulse width, setup and hold, time-out, window violations, or find any logic or state pattern on any number of channels. Search DDR Read or Write bursts with Opt. DDRA

Waveform Measurements

Measurement	Description
Automatic Measurements	53, of which 8 can be displayed on-screen at any one time; measurement statistics, user-definable reference levels, measurement within gates isolating the specific occurrence within an acquisition to take measurements on
Amplitude Related	Amplitude, High, Low, Maximum, Minimum, Peak-to-Peak, Mean, Cycle Mean, RMS, Cycle RMS, Positive Overshoot, Negative Overshoot
Time Related	Rise Time, Fall Time, Positive Width, Negative Width, Positive Duty Cycle, Negative Duty Cycle, Period, Frequency, Delay
Combination	Area, Cycle Area, Phase, Burst Width
Histogram Related	Waveform Count, Hits in Box, Peak Hits, Median, Maximum, Minimum, Peak-to-Peak, Mean (μ), Standard Deviation (sigma), μ+1sigma, μ+2sigma, μ+3sigma
Eye-pattern Related	Extinction Ratio (absolute, %, dB), Eye Height, Eye Width, Eye Top, Eye Base, Crossing %, Jitter (p-p, RMS, 6sigma), Noise (p-p, RMS), Signal/Noise Ratio, Cycle Distortion, Q-Factor

Waveform Processing/Math

Characteristic	Description
Arithmetic	Add, Subtract, Multiply, Divide Waveforms and Scalars
Algebraic Expressions	Define extensive algebraic expressions including Waveforms, Scalars, User-adjustable Variables, and Results of Parametric Measurements e.g. (Integral (CH1 – Mean(CH1)) × 1.414 × VAR1)
Math Functions	Average, Invert, Integrate, Differentiate, Square Root, Exponential, Log₁₀, Log _e, Abs, Ceiling, Floor, Min, Max, Sin, Cos, Tan, ASin, ACos, ATan, Sinh, Cosh, Tanh
Math Waveforms	4
Relational	Boolean result of comparison >, <, ≥, ≤, ==, !=
Frequency Domain Functions	Spectral Magnitude and Phase, Real and Imaginary Spectra
Vertical Units	Magnitude: Linear, dB, dBm Phase: Degrees, radians, group delay IRE and mV units
Window Functions	Rectangular, Hamming, Hanning, Kaiser-Bessel, Blackman-Harris, Gaussian, Flattop2, Tek Exponential
Waveform Definition	As an arbitrary math expression
Filtering Functions	User-definable filters. Users specify a filter containing the coefficients of the filter. Filter files provided
Mask Function	A function that generates a Waveform Database pixmap from a sample waveform. Sample count can be defined

Display Characteristics

Characteristic	Description
Display Type	Liquid-crystal active-matrix color display
Display Size	Diagonal: 307.3 mm (12.1 in.)
Display Resolution	XGA 1240 horizontal × 768 vertical pixels
Waveform Styles	Vectors, Dots, Variable Persistence, Infinite Persistence
Color Palettes	Normal, Green, Gray, Temperature, Spectral, and User Defined
Display Format	YT, XY

Computer System and Peripherals

Characteristic	Description
Operating System	Windows XP
CPU	Intel Pentium 4, 3.4 GHz processor
PC System Memory	2 GB
Hard Disk Drive	Rear-panel, removable hard disk drive, 80 GB capacity
CD/DVD Drive	Front-panel CD-R/W, DVD-R drive
Mouse	Optical wheel mouse, USB interface

Input/Output Ports

Port	Description
Front Panel
Probe Compensator Output	Front-panel pins. Amplitude 1 V ±20% into a ≥50 Ω load; 500 mV from base to top into a 50 Ω load, frequency 1 kHz ±5%
Recovered Clock (for DPO7254 or DPO7354 only)	BNC connector, ≤1.25 Gb/s, Output swing ≥130 mV_p-p into 50 Ω. Requires Option MTM to enable
Recovered Data (for DPO7254 or DPO7354 only)	BNC connector, ≤1.25 Gb/s, Output swing 200 mV into 50 Ω. Requires Option MTM to enable
USB 2.0 Port	One USB 2.0 host connector
Aux Trigger Input	See trigger specification
Side Panel
Parallel Port	IEEE 1284, DB-25 connector
Audio Ports	Miniature phone jacks
Keyboard Port	PS-2 compatible
Mouse Port	PS-2 compatible
USB Ports	Four USB 2.0 host connectors
LAN Port	RJ-45 connector, supports 10BASE-T, 100BASE-T, and Gigabit Ethernet
Serial Port	DB-9 COM1 port
VGA Video Port	DB-15 female connector; connect a second monitor to use dual-monitor display mode. Supports basic requirements of PC99 specifications
Oscilloscope VGA Video Port	DB-15 female connector, 31.6 kHz sync, EIA RS-343A compliant, connect to show the oscilloscope display, including live waveforms on an external monitor or projector
Rear Panel
Power	100 to 240 V_RMS ±10%, 47 to 63 Hz, <550 W 115 V_RMS ±10%, 360 to 440 Hz CAT I, <500 VA
Analog Signal Output	BNC connector provides a buffered version of the signal that is attached to the CH3 input
Amplitude	50 mV/div ±20% into a 1 MΩ load, 25 mV/div ±20% into a 50 Ω load
Bandwidth	100 MHz into a 50 Ω load
External Time Base Reference In	BNC connector, time base system can phase lock to external 10 MHz reference
Aux Out (Software switchable)
Time base reference out	BNC connector, provides TTL-compatible output of internal 10 MHz reference oscillator
Trigger output	BNC connector provides a TTL-compatible, polarity switchable pulse when the oscilloscope triggers
GPIB Port	IEEE 488.2 standard

Physical Characteristics

Benchtop Configuration
Dimension	mm	in.
Height	292	11.48
Width	451	17.75
Depth	265	10.44
Weight	kg	lb.
Net	15	32
Shipping	28.9	63.75
Rackmount Configuration
Dimension	mm	in.
Height	331	12.25
Width	479	18.85
Depth (from rackmounting ear to back of instrument)	231.75	9.12
Weight	kg	lb.
Net	17.4	37.5
Rackmount Kit	2.5	5.5

Mechanical

Cooling – Required Clearance

Dimension	mm	in.
Top	0	0
Bottom	0	0
Left Side	76	3
Right Side	0	0
Front	0	0
Rear	0	0

Environmental

Characteristic	Description
Temperature
Operating	0 °C to +50 °C, excluding CD-R/W drive; +10 °C to +45 °C, including CD-R/W drive
Nonoperating	–40 °C to +71 °C
Humidity
Operating	5% to 95% relative humidity (RH) with a maximum wet bulb temperature of +29 °C at or below +50 °C, noncondensing. Upper limit derated to 45% RH above +30 °C up to +50 °C
Nonoperating	5% to 95% relative humidity (RH) with a maximum wet bulb temperature of +29 °C at or below +60 °C, noncondensing. Upper limit derated to 45% RH above +30 °C up to +50 °C
Altitude
Operating	10,000 ft. (3,048 m)
Nonoperating	40,000 ft. (12,190 m)
Random Vibration
Operating	0.000125 G²/Hz from 5 to 350 Hz, –3 dB/octave from 350 to 500 Hz, 0.0000876 G²/Hz at 500 Hz. Overall level of 0.27 G_RMS
Nonoperating	0.0175 G²/Hz from 5 to 100 Hz, –3 dB/octave from 100 to 200 Hz, 0.00875 G²/Hz from 200 to 350 Hz, –3 dB/octave from 350 to 500 Hz, 0.006132 G²/Hz at 500 Hz. Overall level of 2.28 G_RMS
Regulatory
Electromagnetic Compatibility	93/68/EEC; EN61326:1997 +A1 1998+A2:2000
Certifications	UL 3111-1, CSA1010.1, ISO11469, EN61010-1, IEC 61010-1