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{{Oscilloscope Sidebar |manufacturer=Tektronix |series=TDS series scopes|designers=|
{{Oscilloscope Sidebar  
model= TDS644 |
|manufacturer=Tektronix
image=TDS644A front.jpg |
|series=TDS series scopes
caption=Tektronix TDS644A |
|model=TDS644
introduced=1994 |
|summary=500 MHz, 2 GS/s, 4-Ch digital scope
discontinued=(?) |
|image=TDS644A front.jpg
summary=500 MHz, 2 GS/s, 4-Ch digital scope |
|caption=Tektronix TDS644A
manuals=
|introduced=1994
* [http://w140.com/manual_TDS754A.pdf TDS 500B, TDS 600B, and TDS 700A Digitizing Oscilloscopes 070-9719-00 (PDF)]
|discontinued=(?)
* [[Media:070-8718-04.pdf|TDS 620A, 640A, and 644A Service Manual (PDF)]]
|designers=
* [http://w140.com/tek_tech_ref_TDS_520B_540B_620B_644B_680B_684B_724A_744A_784A.pdf TDS 520B, TDS 540B, TDS 620B, TDS 644B, TDS 680B, TDS 684B, TDS 724A, TDS 744A, and TDS 784A Digitizing Oscilloscopes Performance Verification and Specifications 070-9384-01 (PDF)]
|manuals=
* [[Media:070-8709-07.pdf|TDS 410A, 420A, 460A, 520A, 524A, 540A, 544A, 620A, 640A, 644A, 684A, 744A & 784A Programmer Manual 070-8709-07]] (PDF)
'''TDS644A'''
* [[Media:070-8709-06.pdf|TDS600A Programmer 070-8709-06]]
* [[Media:070-8709-07.pdf|TDS600A Programmer 070-8709-07]]
* [[Media:070-8711-02.pdf|TDS600A Reference 070-8711-02]]
* [[Media:070-8715-04.pdf|TDS644A User Manual 070-8715-04]]
* [[Media:070-8718-04.pdf|TDS644A Service Manual 070-8718-04]]
* [[Media:55W-8862-00.PDF|Sales Brochure]]


==Schematics==
'''TDS644B'''
* [[Media:070-9382-01.pdf|TDS600B Reference 070-9382-01]]
* [[Media:070-9384-01.pdf|TDS600B Performance Verification and Specifications 070-9384-01]]
* [[Media:070-9386-03.pdf|TDS600B Service Manual 070-9386-03]]
* [[Media:070-9719-00.pdf|TDS600B Digitizing Oscilloscopes 070-9719-00]]
* [[Media:070-9721-02.pdf|TDS600B Service Manual 070-9721-02]]
* [[Media:070-9556-00.pdf|TDS644B etc Programmer Manual 070-9556-00]]
* [[Media:070-9861-00.pdf|TDS600B Reference 070-9861-00]] / <small>[[Media:070-9861-00 c2.pdf|Alternate copy]]</small>
* [[Media:070-9869-00.pdf|TDS600B User 070-9869-00]] / <small>[[Media:070-9869-00 c2.pdf|Alternate copy]]</small>
* [[Media:070-9874-02.pdf|TDS600B Technical Reference 070-9874-02]]
* [[Media:070-9875-04.pdf|TDS600B Service 070-9875-04]]
* [[Media:070-9876-00.pdf|TDS600B Programmers Manual 070-9876-00]]
* [[Media:071-0090-01.pdf|TDS600B User Manual Supplement 071-0090-01]] / <small>[[Media:071-0090-01 c2.pdf|Alternate copy]]</small>
* [[Media:071-0134-00.pdf|TDS600B User Manual Japanese 071-0134-00]]
* [[Media:071-0135-00.pdf|TDS600B Performance Verification and Specifications 071-0135-00]]
* [[Media:071-0136-00.pdf|TDS600B Service Manual 071-0136-00]]
 
'''Schematics'''
* [http://hakanh.com/dl/docs/hardtofind/TDS644A_A10(Acq).pdf Full TDS644A schematics of A10 Acquisition board (TDS640, TDS640A, TDS644A)]
* [http://hakanh.com/dl/docs/hardtofind/TDS644A_A10(Acq).pdf Full TDS644A schematics of A10 Acquisition board (TDS640, TDS640A, TDS644A)]
* [http://hakanh.com/dl/docs/hardtofind/TDS544A_A11(CPU).pdf Full TDS644A schematics of A11 CPU board (TDS644A, same as TDS544A)]
* [http://hakanh.com/dl/docs/hardtofind/TDS544A_A11(CPU).pdf Full TDS644A schematics of A11 CPU board (TDS644A, same as TDS544A)]
* [http://hakanh.com/dl/docs/hardtofind/TDS544A_A17-A19(PS).pdf Full TDS644A schematics of A17 - A19 Power Supply boards (TDS620, TDS640, TDS640A & TDS644A, same as TDS544A)]
* [http://hakanh.com/dl/docs/hardtofind/TDS544A_A17-A19(PS).pdf Full TDS644A schematics of A17 - A19 Power Supply boards (TDS620, TDS640, TDS640A & TDS644A, same as TDS544A)]
* [http://hakanh.com/dl/docs/hardtofind/TDS544A_A30-32(Disp).pdf Full TDS644A schematics of A30 - A32 Display/CRT Assy boards (same as TDS544A)]
* [http://hakanh.com/dl/docs/hardtofind/TDS544A_A30-32(Disp).pdf Full TDS644A schematics of A30 - A32 Display/CRT Assy boards (same as TDS544A)]
'''Common'''
* [[Media:061-4094-02.pdf|TDS, TLS & CTS FDD Replacement 061-4094-02]]
* [[Media:070-8432-04.pdf|TLS Logic Scope and TDS Series Oscilloscopes Rackmount Installation 070-8432-04]]
* [[Media:070-8567-01.pdf|Option 13 RS-232/Centronics Hardcopy Interface Instruction Manual 070-8567-01]]
* [[Media:070-8582-01.pdf|Option 2F Advanced DSP Math Instruction Manual 070-8582-01]]
* [[Media:070-8748-02.pdf|TDS Family Opt 05 Video Trigger Interface Instruction Manual 070-8709-02]]
* [[Media:070-8919-00.pdf|TTiP TDS Telecommunication Templates & i-Pattern Software 070-8919-00]]
* [[Media:070-9636-02.pdf|TDS Family Opt 05 Video Trigger Interface Install 070-9636-02]]
* [[Media:070-9785-03.pdf|Wavestar Software User Manual 070-9785-03]]
* [[Media:071-0220-07.pdf|WSTRO & WSTROU WaveStar Software User Manual 071-0220-07]]
* [[Media:071-0220-09.pdf|WSTRO WaveStar Software User Manual 071-0220-09]]
* [[Media:071-0817-00.pdf|WSTRO, WSTROU & WSTRM WaveStar Software, AD007 GPIB-LAN Adapter, TDS3EM Ethernet Comms Module User Manual 071-0817-00]]
* [[Media:071-1140-03.pdf|WaveStar Software, Wavestar Reader, AD007 GPIB-LAN Adapter Software Solutions Installation 071-1140-03]]
}}
}}
 
The '''Tektronix TDS644A''' 4 Channel Digitizing Oscilloscope has a real-time bandwidth of 500 MHz and a sample rate of 2 GS/s, with a record length of up to 2,000 points per channel. <br>
The '''Tektronix TDS644A''' 4 Channel Digitizing Oscilloscope has a real-time bandwidth of 500 MHz and a sample rate of 2 GS/s, with a record length of up to 2,000 points per channel.  
The '''Tektronix TDS644B''' has a sample rate of 2.5 GS/s, with a record length of up to 15,000 points per channel.  


Features include Waveform Math and Advanced Waveform DSP, Color VGA Display, 3.5" DOS Format [[Floppy]] Drive, [[RS-232 interface]], Centronics, [[GPIB]] and [[VGA Connector]].  Inputs have [[Tekprobe BNC connector]]s.
Features include Waveform Math and Advanced Waveform DSP, Color VGA Display, 3.5" DOS Format [[Floppy]] Drive, [[RS-232 interface]], Centronics, [[GPIB]] and [[VGA Connector]].  Inputs have [[Tekprobe BNC connector]]s.
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{{Spec | Bandwidth        | 500 MHz                  }}
{{Spec | Bandwidth        | 500 MHz                  }}
{{Spec | Sampling rate    | 2 GS/s on all 4 channels }}
{{Spec | Sampling rate    | 2 GS/s (TDS644A), 2.5 GS/s (TDS644B) on all 4 channels }}
{{Spec | Time base        | 500 ps/Div to 5 s/Div    }}
{{Spec | Time base        | 500 ps/Div to 5 s/Div    }}
{{Spec | Deflection      | 1 mV/Div to 10 V/Div    }}
{{Spec | Deflection      | 1 mV/Div to 10 V/Div    }}
{{Spec | Resolution      | 8 bits                  }}
{{Spec | Resolution      | 8 bits                  }}
{{Spec | Record length    | 500 to 2000 points       }}
{{Spec | Record length    | 500 to 2000 points (TDS644A), 15,000 points (TDS644B) }}
{{Spec | Input impedance  | 1 MΩ // 10 pF, or 50 Ω  }}
{{Spec | Input impedance  | 1 MΩ // 10 pF, or 50 Ω  }}
{{Spec | Interface        | GPIB standard            }}
{{Spec | Interface        | GPIB standard            }}
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}}
}}
{{EndSpecs}}
{{EndSpecs}}
==Software==
* [[Media:063-1908-01.zip|TDS600 Field Adjustment Software]] (ZIP)
<br>
* [[Media:063-1134-00 V1.2.zip|TDS Family Programming Examples Software 063-1134-00 V1.2]] (ZIP)
* [[Media:066-0002-00.zip|Waveform Converter For Oscilloscopes 066-0002-00]] (ZIP)
* [[Media:066-0087-00.zip|AWE Drivers For Tektronix Oscilloscopes 066-0087-00]] (ZIP)
* [[Media:066-0104-00.zip|File Transfer Utility From TDS Scope To PC 066-0104-00]] (ZIP)
* [[Media:Ttip.zip|Telecom Test and I-Pattern Software TTiP 066-0119-00]] (ZIP)
* [[Media:066-0125-00.zip|Enhanced Printing Utility for TDS Family 066-0125-00]] (ZIP)
* [[Media:Tdsrteup_(TDS_runtime_Environment_TDSRTE1).zip|TDS runtime Environment TDSRTE1 066-0127-00]] (ZIP)
* [[Media:066-0176-00.zip|WFM to ASCII Waveform Converter - UNIX Version For Sun Spark Stations 066-0176-00]] (ZIP)
* [[Media:066-0177-00.zip|Hardcopy from TDS to PC Using HPIP 82335B Interface Card 066-0177-00]] (ZIP)
* [[Media:066-0178-00.zip|Example Program To Get Crossing Levels 066-0178-00]] (ZIP)
* [[Media:066-0179-00.zip|TDS ISF File To CSV File Conversion Utility 066-0179-00]] (ZIP)
* [[Media:066-0188-00.zip|Transfer 2 Byte Data From TDS Oscilloscopes QuickBasic 066-0188-00]] (ZIP)
* [[Media:066-0194-00.zip|TDS Waveform Logging Sample Program 066-0194-00]] (ZIP)
* [[Media:066-0196-00.zip|Load TDS Floppy MathCAD Files Into MathCAD 066-0196-00]] (ZIP)
* [[Media:066-0197-00.zip|Transfer TDS Hardcopy Screens To PC Via GPIB 066-0197-00]] (ZIP)
* [[Media:066-0198-00.zip|Transfer Setups Between TDS Oscilloscopes 066-0198-00]] (ZIP)
* [[Media:066-0200-00.zip|VB Program To Capture TDS Extended Waveforms 066-0200-00]] (ZIP)
* [[Media:066-0489-00.zip|TDS Series WFM File Formatter 066-0489-00]] (ZIP)
* [[Media:Wavestar_2012.05.09.11.07.29_16456_EN.zip|Tektronix Wavestar 2012.05.09.11.07.29 16456 EN 066-0934-03]] (ZIP, 102MB) ''Product Key: WSTRO618650124''
==Firmware==
* [[Media:TDS644A_v3.8.4e_Firmware.zip|TDS644A v3.8.4e Firmware]] (ZIP)
* [[Media:TDS644B_v4.2e_Firmware.zip|TDS644B v4.2e Firmware]] (ZIP)
==Options==
* 05 - Video Trigger                              - Oscilloscope comes with tools that allow investigation of a range of NTSC, PAL, SECAM, and high definition TV signals.
* 1M - 4M acquisition length                      - Extends standard acquisition length from 50,000 points per channel to 130,000 samples on three or four channels, 250,000 samples on two channels, and 500,000 samples on one channel.
* 13 - RS-232C and Centronics hardcopy interfaces - Add RS-232-C and Centronics interface ports.
* 1F - Floppy disk drive                          - Add 3.5 inch, 1.44 MByte floppy disc drive.
* 2F - Advanced DSP math                          - Add advanced DSP math features such as FFT, integration, and differentiation.
==Optional Accessories==
* 1K - Add K420 scope cart
* 1R - Rackmount kit
* 2D - Delete standard 2 P6205 probes
* 24 - Add 4 each P6139A passive probes
* 25 - (TDS644A) Add 4 each P6563AS 20X SMD probes
* 2P - Tektronix Phaser 200e Thermal Wax Transfer Color Printer
* 4D - Delete standard 4 P6205 probes
* 95 - TDS644A Calibration data report
* 96 - TDS644A Calibration Certificate
* D1 - TDS644B Calibration Data Report
==TDS644A Included Accessories==
* 4x P6205 FET Probes
* 070-8711-02 - Reference Manual
* 070-8711-01 - User Manual
* 200-3696-01 - Front cover
* 161-0230-01 - US power cord
==TDS644B Included Accessories==
* 4x P6243 FET Probes
* 070-9382-00 - Quick Reference Guide
* 063-2773-00 - Programmers Manual in MS-Help format on floppy disk
* 070-6869-00 - User Manual
* 070-9874-02 - Technical Reference Manual
* 200-3696-01 - Front cover
* 161-0230-01 - US power cord
* 016-1268-00 - Accessory Pouch
==Recommended Accessories==
* 012-0991-01 - 1m GPIB cable
* 012-0991-00 - 2m GPIB cable
* 012-1298-00 - RS-232 cable
* 012-1250-00 - Centronics cable
* 016-0909-01 - Soft-sided carrying case
* 016-01135-00 - Transit case
* K420 - Scope cart
==Links==
* Tek Forum threads:
** [http://forum.tek.com/viewtopic.php?f=568&t=140017/  Recovering the unit from a bricked state]
** [http://forum.tek.com/viewtopic.php?f=568&t=139999&hilit=TDS784/ Firmware updating]
** [http://forum.tek.com/viewtopic.php?f=568&t=138168&hilit=TDS784/ Backing up and restoring calibration data]
* EEVBlog Forum Threads:
** [http://www.eevblog.com/forum/testgear/hackingupgrading-old-scope-(tds754d)/ EEVBlog Forum thread on TDS options and how to enable them]
** [https://www.eevblog.com/forum/repair/unified-tektool-released-!-(firmware-flash-tools-for-old-tds-series)/ Firmware update via GPIB]
** [https://www.eevblog.com/forum/repair/tektronix-tds500-700-debug-konscole-interface/ Serial debug and console interface card for TDS500-700 series]
** [https://www.eevblog.com/forum/testgear/console-port-debug-adapter-for-tek-tds500-tds600-and-tds700-series-scopes/ Console port debug adapter for TDS500-700 series]
* [https://simmconnlabscom.ipage.com/store/page5.html Simmconn Labs LCD replacement kits for CRT-based TDS O-scopes]
* [https://www.tek.com/support/faqs/i-lost-my-wavestar-keycode-how-can-i-get-it-back Wavestar Product Key]
* [https://www.hakanh.com/dl/TDSErrLog.htm TDS error log viewer]
* [http://www.ko4bb.com/getsimple/index.php?id=enable-tds754d-options Unlocking software options - ko4bb.com]


==Pictures==
==Pictures==
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TDS644A back.jpg
TDS644A back.jpg
</gallery>
</gallery>
==Components==
{{Parts|TDS644A}}
{{Parts|TDS644B}}




Latest revision as of 07:42, 6 December 2023

The Tektronix TDS644A 4 Channel Digitizing Oscilloscope has a real-time bandwidth of 500 MHz and a sample rate of 2 GS/s, with a record length of up to 2,000 points per channel.
The Tektronix TDS644B has a sample rate of 2.5 GS/s, with a record length of up to 15,000 points per channel.

Tektronix TDS644
500 MHz, 2 GS/s, 4-Ch digital scope
Tektronix TDS644A

Produced from 1994 to (?)

Manuals

TDS644A

TDS644B

Schematics

Common

(All manuals in PDF format unless noted otherwise)

Features include Waveform Math and Advanced Waveform DSP, Color VGA Display, 3.5" DOS Format Floppy Drive, RS-232 interface, Centronics, GPIB and VGA Connector. Inputs have Tekprobe BNC connectors.

Opt.05 adds video trigger for NTSC, PAL, HDTV.

Key Specifications

Bandwidth 500 MHz
Sampling rate 2 GS/s (TDS644A), 2.5 GS/s (TDS644B) on all 4 channels
Time base 500 ps/Div to 5 s/Div
Deflection 1 mV/Div to 10 V/Div
Resolution 8 bits
Record length 500 to 2000 points (TDS644A), 15,000 points (TDS644B)
Input impedance 1 MΩ // 10 pF, or 50 Ω
Interface GPIB standard
Options
  • Centronics interface (standard)
  • RS-232 interface (standard)
  • FFT, integration and differentiation (standard)

Software


Firmware


Options

  • 05 - Video Trigger - Oscilloscope comes with tools that allow investigation of a range of NTSC, PAL, SECAM, and high definition TV signals.
  • 1M - 4M acquisition length - Extends standard acquisition length from 50,000 points per channel to 130,000 samples on three or four channels, 250,000 samples on two channels, and 500,000 samples on one channel.
  • 13 - RS-232C and Centronics hardcopy interfaces - Add RS-232-C and Centronics interface ports.
  • 1F - Floppy disk drive - Add 3.5 inch, 1.44 MByte floppy disc drive.
  • 2F - Advanced DSP math - Add advanced DSP math features such as FFT, integration, and differentiation.

Optional Accessories

  • 1K - Add K420 scope cart
  • 1R - Rackmount kit
  • 2D - Delete standard 2 P6205 probes
  • 24 - Add 4 each P6139A passive probes
  • 25 - (TDS644A) Add 4 each P6563AS 20X SMD probes
  • 2P - Tektronix Phaser 200e Thermal Wax Transfer Color Printer
  • 4D - Delete standard 4 P6205 probes
  • 95 - TDS644A Calibration data report
  • 96 - TDS644A Calibration Certificate
  • D1 - TDS644B Calibration Data Report

TDS644A Included Accessories

  • 4x P6205 FET Probes
  • 070-8711-02 - Reference Manual
  • 070-8711-01 - User Manual
  • 200-3696-01 - Front cover
  • 161-0230-01 - US power cord

TDS644B Included Accessories

  • 4x P6243 FET Probes
  • 070-9382-00 - Quick Reference Guide
  • 063-2773-00 - Programmers Manual in MS-Help format on floppy disk
  • 070-6869-00 - User Manual
  • 070-9874-02 - Technical Reference Manual
  • 200-3696-01 - Front cover
  • 161-0230-01 - US power cord
  • 016-1268-00 - Accessory Pouch

Recommended Accessories

  • 012-0991-01 - 1m GPIB cable
  • 012-0991-00 - 2m GPIB cable
  • 012-1298-00 - RS-232 cable
  • 012-1250-00 - Centronics cable
  • 016-0909-01 - Soft-sided carrying case
  • 016-01135-00 - Transit case
  • K420 - Scope cart

Links

Pictures

Components

Some Parts Used in the TDS644A


Some Parts Used in the TDS644B

Part Part Number(s) Class Description Used in
H2462 Hybrid integrated circuit oscilloscope channel input module TDS510B • TDS520B • TDS524B • TDS540B • TDS544B • TDS620B • TDS640B • TDS644B • TDS680B • TDS684B • TDS714 • TDS724 • TDS744 • TDS754 • TDS782 • TDS784 • TDS794
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