Download Manuals, Datasheets, Software and more:



Communications Signal Analyzer


The products on this datasheet are no longer being sold by Tektronix.
View Tektronix Encore for reconditioned test equipment.
Check support and warranty status for these products.

Features & Benefits

  • Real-time Oscilloscope Platform with Up to 4 GHz True Analog Bandwidth and Down to 72 ps Rise Time (20% - 80%)
  • >400,000 wfms/s Waveform Capture Rate, powered by exclusive DPX® acquisition technology
  • 20 GS/s Maximum Real-time Sample Rate
  • MyScope® Custom Control Windows Enhance Productivity
  • Right Mouse Click Menus for Exceptional Efficiency
  • Built-in Compliance Mask Tests with up to 2.5 Gb/s Optical and Electrical Data Stream Rates
  • Integrated Optical Reference Receiver Protects Integrity of System Calibration
  • Integrated Hardware Clock Recovery Provides Single-connection Convenience
  • Up to 64 MB Record Length with MultiView Zoom™ for Quick Navigation of Long Records
  • 64-Bit Serial Trigger for Isolation of Pattern-dependent Effects
  • Complete Eye Pattern Measurements Suite Including Extinction Ratio, Q-factor, Eye Height/Width, Jitter and Noise
  • Waveform Database Acquisition Technology for Accurate Parametric Measurements on Eye Patterns
  • TekConnect® Interface for High Fidelity Connection
  • OpenChoice® with Microsoft Windows 2000 Delivers Built-in Networking and Analysis


  • Design, Development, and Compliance Testing of Optical and Electrical Signals to 2.5 Gb/s Rates
  • Physical Layer Characterization of Communication Signals in Backplane, Midplane and Embedded Designs
  • Optical and Electrical Signal Integrity, Margin Verification, Jitter and Timing Analysis

Versatile, High-performance Real-time Digital Oscilloscopes Dedicated to Rapid Design Analysis and Verification of Communications Signals Up To 2.5 Gb/s Rates (OC-48/STM-16 or Fibre Channel FC2125)

The CSA7404B reduces product development time by providing one tool that spans circuit development and physical layer testing. With this family, engineers can test designs for compliance to network communications standards as well as analyze critical internal parameters such as signal integrity, timing margins, and jitter.

The CSA7404B has 4 GHz true analog bandwidth, a 20 GS/s maximum real-time sample rate, and more than 400,000 wfms/s waveform capture rate, enabled by exclusive DPX® acquisition technology, to rapidly acquire electrical and optical signal information not revealed with other analysis tools. Integrated broad wavelength optical response, clock recovery, serial pattern triggering, and mask testing make testing faster, easier, and more efficient. Innovative software solutions deliver domain expertise for advanced analysis and compliance testing, while the OpenChoice® architecture enables users to integrate their expertise through the ability to easily write custom programs, or utilize popular commercial software. Instrument operation is familiar and intuitive through direct controls and a graphical user interface. This unique combination of superior measurement fidelity, unrivaled analysis, and uncompromised usability speeds the development of network communications circuit designs.

MyScope® Custom Control Windows

MyScope control windows allow you to build your own control windows with only the controls, features, and capabilities that you care about and are important in your job. For the first time you can create your own personalized “toolbox” of oscilloscope features. No longer do you need to search through menus for features or re-learn how to drive the oscilloscope after a break from the lab. MyScope control windows are easily created in a matter of minutes using a simple, visual, drag and drop process. Once created, these customized windows are easily accessed through a dedicated MyScope button and menu selection on the oscilloscope button/menu bar, just like any other control window. You can make an unlimited number of custom control windows, enabling each person who uses the oscilloscope, in a shared environment, to have their own unique control window. Since the control windows are stored as files on the hard drive, they can easily be transferred to other TDS5000B, TDS6000B/C, or TDS7000B Series oscilloscopes, or they can even be e-mailed to a co-worker around the world when the need arises. MyScope control windows will benefit all oscilloscope users, from eliminating the ramp-up time that many face when returning to the lab after not using an oscilloscope for a while, to the power user who can now operate far more efficiently. Everything you need is found in one control window rather than having to constantly navigate through menu after menu to repeat similar tasks.

Right Clicks

Right mouse click menus make simple things as they should be – simple. Right click menus are context sensitive, meaning the choices presented in the menu depend on where you right clicked the mouse. This makes right click menus extremely intuitive. Want to change the cursor type? Right click on a cursor or the cursor readouts. Want to change the reference levels of an automatic measurement? Right click on the measurement. Want to change trigger parameters? Right click on the trigger readouts. Want to change a waveform’s color? Right click on the waveform handle. Virtually all objects on the oscilloscope display have right click menus associated with them that include all the appropriate actions or features relative to those objects. There are also right click menus for regions of the display, in addition to just objects. For example, right clicking in the main graticule brings up a menu with choices such as Clear Data, Default Setup, Autoset, Screen Captures, Save All Waveforms, and Add Screen Text, providing single click access to many of your most commonly performed tasks.


Vertical System



Input Channels


Hardware Analog Bandwidth (-3 dB)

4 GHz

Rise Time 10% to 90% (Typical)

100 ps

Rise Time 20% to 80% (Typical)

72 ps

Input Coupling


Input Impedance

50 Ω

Input Sensitivity

2 mV/div to 1 V/div

Vertical Resolution

8 bits, (>11 bits with averaging)

Max. Input Voltage

<1 VRMS for <100 mV/div, <5 VRMS for ≥100 mV/div settings. Also determined by TekConnect® accessory

Offset Range

2 mV to 50 mV/div  ±0.5 V, 50.5 mV to 99.5 mV  ±0.25 V, 100 mV to 500 mV  ±5 V, 505 mV to 1 V/div  ±2.5 V

DC Gain Accuracy 4 mV/div to 1 V/div

±(2% + (2% x net offset/10)) net offset = voltage level at center screen (vertically)

*1 At ≥10 mV/div.

Optoelectronic System



Specifications assume use of the included 013-0327-00 O-to-E Output to CH1 interconnect (unless otherwise noted).

Optical channel unfiltered bandwidth

2.4 GHz

Input Connector

Rifocs universal connector

Wavelength range

700 nm to 1650 nm

Calibrated wavelengths

780 nm, 850 nm, 1310 nm, 1550 nm

O/E Gain

≥0.27 V/mW (0.35 V/mW typical) @ 780 nm ±20 nm

≥0.33 V/mW (0.40 V/mW typical) @ 850 nm ±20 nm

≥0.64 V/mW (0.75 V/mW typical) @ 1310 nm ±20 nm

≥0.64 V/mW (0.75 V/mW typical) @ 1550 nm ±20 nm

Sensitivity (smallest average power for mask test). Assumes scale factor is set to minimum μW/div settings and signal is at least 4 divisionsp-p

40 μWp-p at 1310 nm and 1550 nm. 20 μW (-17 dBm) average power assuming 50% average duty cycle

80 μWp-p at 780 nm and 850 nm. 40 μW (-14 dBm) average power assuming 50% average duty cycle

RMS Noise

≤1.1 μW + (6.5% of W/div setting) at 1310 nm and 1550 nm

≤2.1 μW + (6.5% of W/div setting) at 850 nm

≤2.6 μW + (6.5% of W/div setting) at 780 nm

Input range

10 μW/div to 500 uW/div

Optical reference receiver typically available over the following range: 40 μW (-14 dBm) to 400 μW (-4 dBm) at wavelength <1200 nm; 25 μW (-16 dBm) to 250 μW (-6 dBm) at wavelength >1200 nm.

Absolute Maximum Nondestructive Optical Input

5 mW average; 10 mW peak at wavelength with highest relative responsivity

Maximum Nonsaturating Linear Response to Transient Input (Typical)

<170 μW average input (340 μW pk) at 850 nm <120 μW average input (240 μW pk) at 1310 and 1550 nm

Fiber Input

62.5 μm core multimode fiber

Input Return Loss (typical)

With 50 μm or 62.5 μm core multimode fiber (CPC6) attached:

>14 dB for 780 nm ±20 nm

>14 dB for 850 nm ±20 nm

With 9 μm core single mode fiber (SMF-28) attached:

>28 dB for 1310 nm ±20 nm

>28 dB for 1550 nm ±20 nm

Optical Reference Receiver System



Fourth-order Bessel-Thompson filter response at the following rates:


OC-1/STM0 (51.84 Mb/s)

OC-3/STM1 (155.52 Mb/s)

OC-12/STM4 (622.08 Mb/s)

OC-48/STM16 (2488.3 Mb/s)

OC-48 FEC (2.666 Gb/s)

Gigabit Ethernet

1000Base SX (1.25 Gb/s)

1000Base LX (1.25 Gb/s)

Fibre Channel

FC133 (132.7 Mb/s)

FC266 (265.6 Mb/s)

FC531 (531.2 Mb/s)

FC1063 (1063.5 Mb/s)

FC2125 (2127 Mb/s)

IEEE 1394b

S400 (491.5 Mb/s)

S800 (983.04 Mb/s)

S1600 (1.9661 Gb/s)


2.5 Gb/s (2127 Mb/s)


1.24416 Gb/s

Clock Recovery System



Clock Recovery Phase Locked Loop Bandwidth

Fbaud/1600 typical

Tracking/Acquisition Range

±2% of requested baud

Clock Recovery Jitter (Typical)

<0.25% bit period +5 psRMS for PRBS data pattern or 4 psRMS for repeating “011” data patterns

Input Sensitivity for Clock Recovery

1 division pk-pk displayed signal

Input Data Rates

1.5 Mbaud to 3.125 Gbaud

Communications Mask Testing



SONET/SDH GR 253-CORE (Issue 39/21/2000)





OC-48 FEC (2.666 Gb/s)

ITU-T G.703 (10/98)

DS1 Rate, DS2 Rate Sym Pair, DS2 Rate Coax, DS3 Rate E1 Sym Pair, E1 Coax, E2, E3 E4 Binary 0, E4 Binary 1 32 Mb, 97 Mb STM 1E 0/Bin 0, STM 1E 1/Bin 1

ANSI T1.102-1993 (R1999)

DS1, DS1A, DS1C, DS2, DS3, DS4NA, DS4NA Max Output STS-1 Pulse, STS-1 Eye STS-3, STS-3 Max Output

Ethernet IEEE Std 802.3 and ANSI X3.263-1995

100 Base-T STP, 100 Base-T UTP

1000 Base-SX Short Wave Optical

1000 Base-LX Long Wave Optical

1000 Base-CX

Fibre Channel Optical (ANSI X3.303-1997)

FC133, FC266, FC531, FC1063, FC1063 Draft Rev 11 FC2125 Draft Rev 11

Fibre Channel Electrical (ANSI X3.303-1997)

FC133E, FC266E, FC531E, FC1063E, FC1063E Normalized Beta, Delta, Gamma Transmit FC1063E Absolute Beta, Delta, Gamma Transmit FC1063E Absolute Beta, Delta, Gamma Receive, FC2125E Normalized Beta, Delta, Gamma Transmit FC2125E Absolute Beta, Delta, Gamma Transmit FC2125E Absolute Beta, Delta, Gamma Receive

USB Rev 2.0 April 2000

FS (12 Mb/s)

HS:T1, T2, T3, T4, T5, T4 (480 Mb/s)

InfiniBand (draft)

2.5 Gb/s Optical 2.5 Gb/s Electrical

IEEE 1394b (draft)

S400 Optical

S400b T1,

S400b T2

S800 Optical

S800b T1,

S800b T2

S1600 Optical

S1600b T1,

S1600b T2

Serial ATA (Rev 1.0 June 2002)

G1 Rx (5 Cycle), G1 Tx (5 Cycle)

Rapid IO LP_LVDS Rev 0.3 (draft) 5/2002

+Drv: 500 Mb/s, 750 Mb/s, 1 Gb/s, 1.5 Gb/s, 2.0 Gb/s

+Ext Drv: 500 Mb/s, 750 Mb/s, 1 Gb/s, 1.5 Gb/s, 2.0 Gb/s

+Rcv: 500 Mb/s, 750 Mb/s, 1 Gb/s, 1.5 Gb/s, 2.0 Gb/s

Rapid IO Serial Rev 1.1 December, 2001

RIO Serial: 1.25 Gb/s, 2.5 Gb/s

OIF Standards Draft 1.13 June 5,2002

SFI-5, SPI-5 TA/TC/RB/RD data/clock (2.4888 Gb/s)

SFI-5, SPI-5 TC Data (2.4888 Gb/s)

SFI-5, SPI-5 TA Clk (2.4888 Gb/s)

SFI-5, SPI-5 TC Clk (2.4888 Gb/s)

SFI-5, SPI-5 Data (2.4888 Gb/s)

SFI-5, SPI-5 RD Data (2.4888 Gb/s)

SFI-5, SPI-5 RB Clk (2.4888 Gb/s)

SFI-5, SPI-5_5 RD Clk (2.4888 Gb/s)

VSR OC 192/STM64 1.24416 Gb/s

TFI-5 (2.4888 Gb/s)

PCI-Express Rev 1.0

Transmit/Receive (2.5 Gb/s)

Timebase System



Timebase Range

50 ps to 10 s/div

Timebase Delay Time Range

5 ns to 250 s

Channel to Channel Deskew Range

±75 ns in 1 ps steps

Time Interval Accuracy, single-shot sample mode

(0.06/sample rate + 2.5 ppm x |reading|) RMS

Trigger Jitter

1.5 psRMS typical

Long Term Sample Rate and Delay Time Accuracy

±2.5 ppm over ≥100 ms interval; aging <1 ppm per year from date of factory calibration

External Timebase Reference

Rear Panel Connection

External Reference Input Frequency Range

9.8 MHz to 10.2 MHz

External Reference Input Sensitivity

Vin≥200 mVp-p

External Reference Maximum input signal

7 Vp-p

Internal Reference Output Frequency

±2.5 ppm over ≥100 ms interval; aging <1 ppm per year from date of factory calibration

Internal Reference Output Voltages

Vout (Hi) ≥2.5 V open circuit; ≥1.0 V into 50 Ω load to gnd

Vout (Lo) ≤0.7 V into a load of ≤4 mA; ≤0.25 V into 50 Ω load to gnd

Acquisition System

Real-time Sample Rates


1 channel (Max. rate)

20 GS/s

2 channels (Max. rate)

10 GS/s

3-4 channels (Max. rate)

5 GS/s

Equivalent time sample rate (Maximum)

1 TS/s

Maximum record length per channel with standard memory

4 M (1 ch), 2 M (2 ch), 1 M (4 ch)

With Memory Opt. 2M

8 M (1 ch), 4 M (2 ch), 2 M (4 ch)

With Memory Opt. 3M

16 M (1 ch), 8 M (2 ch), 4 M (4 ch)

With Memory Opt. 4M

32 M (1 ch), 16 M (2 ch), 8 M (4 ch)

With Memory Opt. 5M

64 M (1 ch), 32 M (2 ch), 16 M (4 ch)

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



Time Resolution (single-shot)

50 ps (20 GS/s)

Maximum Duration with Standard Memory

200 μs

Maximum Duration with Opt. 2M

400 μs

Maximum Duration with Opt. 3M

800 μs

Maximum Duration with Opt. 4M

1.6 ms

Maximum Duration with Opt. 5M

3.2 ms

Acquisition Modes



FastAcq Acquisition

Powered by DPX® acquisition technology, FastAcq optimizes the instrument for analysis of dynamic signals and capture of infrequent events

Maximum FastAcq Waveform Capture Rate

>400,000 wfms/sec


Acquire sampled values

Waveform Database (WfmDB)

Accumulate waveform database providing three-dimensional array of amplitude, time and counts

Peak Detect

Captures narrow glitches at all real time sampling rates

Minimum Peak Detect Pulse Width

400 ps


From 2 to 10,000 waveforms included in average


From 2 to 2x109 waveforms included in min-max envelope


Real-time boxcar averaging reduces random noise and increases resolution

FastFrame Acquisition

Acquisition memory divided into segments; maximum trigger rate >265,000 waveforms per second. Time of arrival recorded with each event

Trigger System




Trigger Level Range

Internal DC Coupled, Main Trigger

0.5 div from DC to 50 MHz, ≤1.5 div at 3 GHz

External (Auxiliary Input)

150 mV from DC to 50 MHz increasing to 500 mV at 2.5 GHz

Main Trigger Modes

Auto, Normal and Single

Trigger Sequences

Main, Delayed by Time, Delayed by Events. All sequences can include separate horizontal delay after the trigger event to position the acquisition window in time


±12 divisions from center of screen

External (Auxiliary Input)

±5 V


fixed at 0 V

Trigger Coupling

DC, AC (attenuate <60 Hz), HF Rej (attenuate >30 kHz), LF Rej (attenuates <80 kHz), Noise Reject (reduce sensitivity)

Trigger Holdoff Modes

Random, Automatic or User-Specified Time

Trigger Holdoff Range

250 ns minimum to 12 seconds maximum

Trigger Modes

Edge - Positive and/or negative slope on any channel or front panel auxiliary input. Coupling includes DC, AC, noise reject, HF reject and LF reject.

Comm - Support for AMI, HDB3, BnZS, CMI, MLT3 and NRZ encoded communications signals.

AMI encoding: Standards include DS1, DS1A, DS1C, DS3, E1, E2, E3, STS-1 or a custom bit rate. Select between positive or negative isolated one, zero pulse form or eye patterns.

HDB3 encoding: Standards include E1, E2, E3, DS1A or custom bit rate. Select between positive or negative isolated one pulse or eye pattern.

BnZS encoding: Standards include DS1, DS1C, DS2, DS3, STS-1 or custom bit rate. Select between positive or negative isolated one pulse or eye pattern.

CMI encoding: Standards include STS-3, STM1E, DS4NA, E4 or a custom bit rate. Select between positive or negative one pulse, zero pulse or eye pattern.

MLT3 encoding: Standards include 100 Base-TX.

NRZ encoding: Standards include OC1/STM0, OC3/STM1, OC12/STM4, OC48/STM16, GB Ethernet, FC133, FC266, FC531, FC1063, FC2125, Infiniband 2.5, G1 ATA, FS USB, HS USB, IEEE 1394b S400b, S800b, S1600b, OC-48 FEC, 1000 BASE CX, RapidIO, SFI-5, SPI-5, VSR, PCI-Express, TFI-5; eye patterns only. CSA7154 limited to standards ≤1.25 Gb/s.

Serial Pattern - 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 Gbaud.

Glitch - Trigger on or reject glitches of positive, negative, or either polarity. Minimum glitch width is 1.0 ns with 200 ps resolution. Minimum glitch width is 225 ps with rearm time of 250 ps.

Width - Trigger on width of positive or negative pulse (down to 225 ps) either within or out of selectable time limits: 340 ps to 1 s.

Runt - Trigger on a pulse that crosses one threshold but fails to cross a second threshold before crossing the first again. Optional time qualification.

Timeout - Trigger on an event which remains high, low, or either, for a specified time period, selectable from 340 ps to 1 s with 100 ps resolution.

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.

Logic Qualified Trigger applicable to Glitch, Width, Runt, Timeout, Transition, Setup/Hold, Window triggers — trigger on the specified event only if the logic state defined with the remaining unused channels occurs.

Trigger Delay by Time - Trigger Delay by Time 5 ns to 250 seconds.

Trigger Delay by Events - Trigger Delay by Events 1 to 10,000,000 Events.

Waveform Measurements

Amplitude - Amplitude, High, Low, Maximum, Minimum, Peak to Peak, Mean, Cycle Mean, RMS, Cycle RMS, Positive Overshoot, Negative Overshoot.

Time - 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 (σ), μ+1σ, μ+2σ, μ+3σ.

Eye Pattern-related - Extinction Ratio (absolute, % and dB), Eye Height, Eye Top, Eye Base, Eye Width, Crossing %, Jitter (peak-peak, RMS and 6sigma), Noise (peak-peak and RMS), S/N ratio, Cycle Distortion, Q-factor.

Waveform Processing/Math

Algebraic Expressions - Define extensive algebraic expressions including waveforms, scalars and results of parametric measurements e.g. (Integral (Ch. 1-Meas(Ch. 1))×1.414).

Arithmetic - Add, subtract, multiply, divide waveforms and scalars.

Relational - Boolean result of comparison >, <, ≥, ≤, ==, !=.

Calculus - Integrate, differentiate.

Frequency Domain Functions - Spectral magnitude and phase, real and imaginary spectra.

Vertical Units - Magnitude: Linear, dB, dBm.

Phase: degrees, radians.

Window Functions - Rectangular, Hamming, Hanning, Kaiser-Bessel, Blackman-Harris, Gaussian, Flattop2, Tek Exponential.

Waveform Definitions - Waveform definition as arbitrary math expressions.

Display Characteristics

Display Type - Liquid crystal active-matrix color display; integral touch screen.

Display Size - 211.2 mm (W) x 158.4 mm (H), 264 mm (10.4 in.) diagonal.

Display Resolution - 1024 horizontal x 768 vertical pixels.

Waveform Styles - Vectors, Dots, Variable Persistence, Infinite Persistence.

Computer System and Peripherals

CPU - Intel Pentium IV processor, 2.8 GHz*2

PC System Memory - 1 GB*2.

Hard Disk Drive - 40 GB removable hard disk drive: rear-panel, or (B model only) front-panel (option FHD).

Floppy Disk Drive - 1.44 MB 3.5 in floppy disk drive: front-panel, or rear-panel (option FHD).

CD-RW Drive - Rear-panel CD-RW drive.

Mouse - Thumb wheel model included, USB interface.

Keyboard - Mini-keyboard included (fits in pouch); PS-2 interface. Order 119-6633-00 for full-size keyboard; USB interface and hub.

*2 Available September 2004.

Input/Output Ports

Probe Compensation Output - Front panel BNC connector, requires Probe Cal-Deskew Fixture (included) for probe attachment.

1 V ±20% into >10 kΩ load

500 mV ±20% into a 50 Ω load.

Recovered Clock Out - Front-panel SMA connector provides output of clock signal recovered from specified channel. Output compatible with ECL terminated with 50 Ω to GND. Peak-to-peak output swing at 650 MHz is at least 200 mV into 50 Ω. Higher frequencies will be further attenuated by approximately 6 dB per octave above 625 MHz.

Recovered Data Out - Front-panel SMA connector provides regenerated data output from clock recovery system. Serial data output baud rate ≤1250 MBaud. Output swing at this baud rate will be at least 200 mV into 50 Ω.

Optical In - Optoelectronic converter input, 700 nm to 1650 nm, Rifocs connector.

O/E Output - Front-panel BMA connector providing electrical output of optoelectronic converter. SMA adapter included.

Analog Signal Output Amplitude - Rear-panel BNC connector, provides a buffered version of the signal that is attached to the Channel 3 input when Ch. 3 is selected as trigger source. Frequency response: 1.8 GHz into a 50 Ω load. Amplitude: 20 mV/div ±20% into a 1 MΩ load, 10 mV/div ±20% into a 50 Ω load.

Auxiliary Output - Rear-panel BNC connector, provides a TTL-compatible, polarity switchable pulse when the oscilloscope triggers or optionally, upon mask test failure or test completion.

External Timebase Reference In - Rear-panel BNC connector, timebase system can phase-lock to external 10 MHz reference.

Timebase Reference Out - Rear-panel BNC connector, provides TTL-compatible output of internal 10 MHz reference oscillator.

Parallel Port - IEEE 1284, DB-25 connector.

Audio Ports - Miniature phone jacks for stereo microphone input and stereo line output.

USB Port - Allows connection or disconnection of USB keyboard, mouse or other peripherals while oscilloscope power is on. Two USB ports.

Keyboard Port - PS-2 compatible.

Mouse Port - PS-2 compatible.

LAN Port - RJ-45 connector, supports 10 Base-T and 100 Base-T.

Serial Port - DB-9 COM1 port.

Windows Video Port - 15 pin D-Sub connector on the rear panel; connect a second monitor to use dual-monitor display mode. Video is DDC2B compliant

GPIB Port - IEEE 488.2 standard.

Scope Video Port - 15 pin D-Sub connector on the rear panel, video is IBM XGA compatible for B models. Connect to show the oscilloscope display, including live waveforms on an external monitor or projector. The primary Windows desktop can also be displayed on an external monitor using this port.

Power Source

Power - 100 to 240 VRMS, ±10%, 50/60 Hz CAT II.

115 VRMS ±10%, 400 Hz CAT II.

<300 Watts (450 VA).

Physical Characteristics
















Required Clearance


































0 or >76

0 or >3




Left side



Right side










Temperature -


0 °C or 5 °C (B models) to +50 °C, excluding floppy disk and CD-RW drives.

+10 °C to +45 °C, including floppy disk and CD-RW drives.

Nonoperating: -22 °C to +60 °C.

Humidity -

Operating: 20% to 90% relative humidity with a maximum wet bulb temperature of +29 °C at or below +50 °C, noncondensing. Upper limit derated to 25% relative humidity at +50 °C.

Nonoperating: With no diskette in floppy disk drive, 20% to 90% relative humidity with a maximum wet bulb temperature of +29 °C at or below +60 °C, noncondensing. Upper limit derated to 20% relative humidity at +60 °C.

Altitude -

Operating: 10,000 ft. (3,048 m).

Nonoperating: 40,000 ft. (12,190 m).

Random Vibration -

Operating: 0.00015 g2/Hz from 5 to 350 Hz,

-3 dB/octave from 350 to 500 Hz,

0.000105 g2/Hz at 500 Hz.

Overall level of 0.27 gRMS.

Nonoperating: 0.0175 g2/Hz from 5 to 100 Hz,

-3 dB/octave from 100 to 200 Hz,

0.0875 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 gRMS.

Electromagnetic Compatibility - EN 61326 (EU EMC Directive 89/336 EEC).

AS/NZS 2064 (Australian EMC Framework).

Safety - UL 3111-1, CSA-22.2 No. 1010.1, EN61010-2.

Ordering Information


4 GHz Communications Signal Analyzer

Includes: Accessory pouch, front keyboard cover, mouse, probe calibration and deskew fixture (067-0405-xx), O/E Electrical Output to Ch. 1 Input Adapter (013-0327-xx), Fiber cleaning kit (020-2494-xx), GPIB Programmer's Reference, Optional Applications Software CD-ROM, Oscilloscope Analysis and Connectivity Made Easy Kit, Performance verification procedure PDF file, NIST, MIL-STD-45662A, ISO9000 Calibration Certificate and Power Cord.

CSA7404B also includes: (4) TekConnect® to SMA adapters (TCA-SMA), Quick Reference (020-2519-xx), User Manual (071-1226-xx), Option SM and ST User Manual (071-1228-xx), TDS/CSA7000B Series Product Software CD-ROM, and TDS/CSA7000B Series operating system restoration CD-ROM

Please specify power plug and disk drive option when ordering.

Instrument Options

Power Plug Options

Opt. A0 - North America power.

Opt. A1 - Universal EURO power.

Opt. A2 - United Kingdom power.

Opt. A3 - Australia power.

Opt. A5 - Switzerland power.

Opt. A6 - Japan power.

Opt. A10 - China power.

Opt. A99 - No power cord or AC adapter.

Mounting Options

Opt. 1K - K4000 Scope cart.

Opt. 1R - Rackmount kit.

Disk Drive Options

Opt FHD - Front–panel 40 GB removable hard disk drive, replaces floppy disk drive that goes on the rear-panel

Service Options

Opt. C3 - Calibration Service 3 Years

Opt. C5 - Calibration Service 5 Years

Opt. D1 - Calibration Data Report

Opt. D3 - Calibration Data Report 3 Years (with Option C3)

Opt. D5 - Calibration Data Report 5 Years (with Option C5)

Opt. R3 - Repair Service 3 Years

Opt. R5 - Repair Service 5 Years

Recommended Accessories

Probes and Converters

P7260 - 6 GHz Low Capacitance Active Voltage Probe (TekConnect®).

P7350 - 5 GHz Differential Probe (TekConnect®).

P7350SMA - 5 GHz SMA Input differential Probe

P6150 - 9 GHz Low Capacitance Passive Voltage Probe (requires TCA-SMA adapter).

P6158 - 3 GHz Low Capacitance Passive Voltage Probe (requires TCA-BNC adapter).

CT6 - 2 GHz AC Current Probe (requires TCA-BNC adapter).

CT1 - 1 GHz AC Current Probe (requires TCA-BNC adapter).

P6701B - Optical-to-Electrical Converter; 500 nm to 950 nm (requires TCA-BNC adapter).

P6703B - Optical-to-Electrical Converter; 1100 nm to 1650 nm (requires TCA-BNC adapter).

TCP202 - DC to 50 MHz Current Probe (requires TCA-BNC adapter).

P6245 - 1.5 GHz Active Probe.

P6248 - 1.7 GHz Differential Probe.

P6250 - DC to 500 MHz, 42 V, Differential Probe (requires TCA-BNC adapter).

P6251 - DC to 1 GHz, 42 V, Differential Probe (requires TCA-BNC adapter).

P7240 - 4 GHz Active Probe.

P7330 - 3.5 GHz Differential Probe.


TCA75 - 4 GHz precision TekConnect® 75 Ω to 50 Ω adapter with 75 Ω BNC input connector.

TCA-SMA - TekConnect-to-SMA Adapter.

TCA-BNC - TekConnect-to-BNC Adapter.

TCA-N - TekConnect-to-N Adapter.

TCA-1Meg - 1 Meg amplifier, high impedance buffer 1 MΩ/10 pF, TekProbe BNC-to-TekConnect®; includes P6139A.

AFTDS - Telecom differential electrical interface adapter (for line rates <8 Mb/s; requires TCA-BNC adapter).

AMT75 - 1 GHz precision 75 Ω adapter (for line rates >8 Mb/s; requires TCA-BNC adapter).

Optical Connector Adapters

FC/PC - Order 119-5115-00.

SC/PC - Order 119-5116-00.

ST/PC - Order 119-4513-00.

DIN/PC 47256 - Order 119-4546-00.

Diamond 2.5 - Order 119-4556-00.

Diamond 3.5 - Order 119-4558-00.

SMA 2.5 - Order 119-4517-00.

SMA - Order 119-4557-00.


GPIB Cable (1M) - Order 012-0991-01.

GPIB Cable (2M) - Order 012-0991-00.

Centronics Cable - Order 012-1214-00.

Test Fixtures

TDSUSBF - USB test fixture to be used in conjunction with Opt. USB


WSTRO - Wavestar™ waveform capture and documentation software.


Keyboard - Full size, USB interface; Order 119-6633-00.

Service Manual - Order 071-1227-xx.

Transit Case - Order 016-1522-00.

Options (available on models indicated by "x")




Acquisition Memory Options

Software Options


8 Msamples max, 2 Msamples/ch



16 Msamples max, 4 Msamples/ch



32 Msamples max, 8 Msamples/ch



64 Msamples max, 16 Msamples/ch



TDSDVI DVI compliance test solution



TDSDVD Optical storage analysis



TDSET3 Ethernet compliance test software



TDSJIT3 Advanced jitter analysis software



TDSJIT3 Essentials



TDSDDM2 Disk drive analysis software



TDSCPM2 ANSI/ITU Telecom pulse compliance testing software



TDSUSBS USB2.0 Compliance test S/W only



TDSPWR3 Power measurement and analysis software



Serial Data Compliance and Analysis Software



PCI Express™ Compliance Module for option RTE



InfiniBand® Compliance Module for option RTE


*1 Requires Option TDSUSBF (USB Test Fixture).

*2 Requires Option RTE.

To view instrument upgrades, please go to