067-0587-02: Difference between revisions

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* [[Art Metz]]: A New Calibration Fixture for the 7000 Series.  In [[Media:Tekscope 1979 V11 N1.pdf | TekScope Vol. 11 No. 1, 1979]], p.14+
* [[Art Metz]]: A New Calibration Fixture for the 7000 Series.  In [[Media:Tekscope 1979 V11 N1.pdf | TekScope Vol. 11 No. 1, 1979]], p.14+
* [http://amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/calibration-fixture.htm 067-0587-02 @ amplifier.cd] (comparing -01 and -02, lots of pictures, text in German)
* [http://amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/calibration-fixture.htm 067-0587-02 @ amplifier.cd] (comparing -01 and -02, lots of pictures, text in German)
* [https://www.youtube.com/watch?v=bIZYGPp4WRY Tektronix Calibration Fixtures and Standardizers For 7K Frames] @ Zenwizard Studios YouTube


==Pictures==
==Pictures==

Revision as of 06:46, 19 May 2022

Tektronix 067-0587-02
calibration fixture
067-0587-02 calibration fixture, front view

Compatible with 7000-series scopes

Produced from 1979 to (?)

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 067-0587-02 is a signal standardizer (calibration) plug-in for 7000-series scopes, especially the 1 GHz 7104 mainframe. It is a complete redesign of the 067-0587-01 standardizer. It provides a calibrated staircase at 1 line/Div in Gain mode, a fast-rising pulse in Step Resp mode, an input for a CW signal to test bandwidth, and an input for a common mode test signal. The 067-0587-02 was designed by Art Metz.

Key Specifications

     — GAIN mode
Staircase accuracy ± 0.3% in ± 3 Div, ± 0.5% in ± 4 Div, Linearity ± 0.2% of 10 Div
     — STEP RESP mode
Amplitude 2 to 10 Div
Position Top at least ±5 Div from center of screen
Rise time < 150 ps
Repetition rate 10 Hz to 1 MHz in decade steps, 0.1 %
Pretrig Out 0.5 V into 50 Ω, 55 to 95 ns lead time (internally variable)
     — FREQ RESP mode
Input impedance 50 Ω
Input range 0.5 to 1 Vp-p
Flatness ± 3% from 3 MHz to 1 GHz

Internals

Internal signals are derived from a 1 MHz oscillator with selectable decade divisions down to 10 Hz repetition.

The clock is delayed, amplified and limited, then fed to a Schottky-diode based pulse shaper with L-C compensating networks. The output pulse has a rise time of max. 150 picoseconds with less than 2% aberrations.

The staircase generator for Gain mode is implemented using a 4 bit counter and multiplexer. The 0-volt step (No. 6) is held for five counts, producing a brighter trace to allow easy alignment with the center of the screen.

For bandwidth measurements, there is a leveler circuit with a differential diode detector controlling an amplifier's gain in an AGC loop. NB: The response is not specified below 3 MHz.

The 067-0587-02 is based on a number of Tektronix custom ICs from the 1 GHz 7104 scope generation, such as the 155-0160-00 trigger amplifier + source select chip and the 155-0175-00 trigger amplifier chip.

The mode selector switch is a special elastomer-based cam switch. The manual warns that while it can be cleaned if proper procedure is followed (note some screws are labelled "do not remove" on the cover!), only at the factory can (could ...) it be repaired/re-assembled completely. A Tek-internal introduction to 7104 maintenance discusses this switch in detail.

Links

Pictures

Custom ICs used in the 067-0587-02

Page Model Part nos Description Designers Used in
155-0160-00 M136 155-0160-00 1.5 GHz trigger amplifier and source select Art Metz 7B10 7B15 067-0587-02 067-0587-10
155-0175-00 H476 155-0175-00 155-0175-05 broadband amplifier John Addis Wink Gross Carl Battjes 7904A 7912HB 7934 7104 R7103 7A29 7A29P 7F10 067-0587-02 067-0587-10 11A71 SCD1000 EG&G N-AM-173A
155-0182-00 H672 155-0182-00 Schottky diode shaper 067-0587-02 067-0587-10
155-0183-00 H672 155-0183-00 Schottky diode detector Art Metz 067-0587-02 067-0587-10