User:Peter: Difference between revisions

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Hi, my name is Peter (who would have guessed?). I was born and live in Austria.  Originally an EE, my current day job is in IT, in an international environment.
Hi, my name is Peter (who would have guessed?). I was born and live in Austria.  Originally an EE, my current day job is in IT, in an international environment.


The first Tek instrument I worked with – around 1982 IIRC – was a [[T912]] "vacuum cleaner" which I must say left me "slightly underimpressed" compared with my favourites at the time, the HP 1740 series.
The first Tek instrument I worked with – around 1982 IIRC – was a [[T912]] "vacuum cleaner" which I must say left me "slightly underimpressed" compared with my favourite oscilloscopes at the time, the HP 1740 series.


For budget reasons, the first scope I bought for myself, circa 1986, was a rather pedestrian Kenwood 100 MHz 2-ch portable (a la [[465]]).   
For budget reasons, the first scope I bought for myself, circa 1986, was a rather pedestrian Kenwood 100 MHz 2-ch portable (a la [[465]]).   
It did pay for itself through a consulting engagement (2nd generation products of this effort are still in service),  
It did pay for itself through a consulting engagement (2nd generation products of this effort are still in service as of 2024), but I learned only some time later what the difference between a ''passable'' scope like that and a ''good'' scope was, when I compared them side by side in overdrive …
but I learned only some time later what the difference between a ''passable'' scope like that and a ''good'' scope was, when I compared them side by side in overdrive ...


The first Tek scope in my own possession was the [[7613]] pictured below, which I bought in early 2014.   
The first Tek scope in my own possession was the [[7613]] pictured below, which I bought in early 2014.  Looking for manuals (its power supply needed some TLC), I found TekWiki.   
Looking for manuals (its power supply needed some TLC), I found TekWiki.   
The resurrected 7613 did not remain alone for long.
The resurrected 7613 did not remain alone for long.
I worked my way up from ''good'' scopes to ''extraordinary'' ones – see below for the current population of ''Vintage Tek Sanctuary Central Europe''.
I worked my way up from ''good'' scopes to ''extraordinary'' ones – see below for the current population of ''Vintage Tek Sanctuary Central Europe''.


On this Wiki, [[User:Kurt|Kurt]] created an account for me in May 2014.  I started to add a few photos and some data, then began building categories and some templates.  
On this Wiki, [[User:Kurt|Kurt]] created an account for me in May 2014.   
I started to add a few photos and some data, then began building categories and some templates.  


In June of that year, Kurt already gave me admin rights, thanks for the trust!   
In June of that year, Kurt already gave me admin rights, thanks for the trust!   
One thing led to another ... having been familiar with Mediawiki (I set up a corporate Intranet with that software in 2006 that is still in use), I started getting involved in this site's software side as well, and over the years helped expand its coverage a bit.   
One thing led to another … having been familiar with Mediawiki (I set up a corporate Intranet with that software in 2006 that is still in use), I started getting involved in this site's software side as well, and over the years helped expand its coverage a bit.   


Feel free to contact me if you have questions about the [[Special:CargoTables|Cargo database module]], for example.
Feel free to contact me if you have questions about the [[Special:CargoTables|Cargo database module]], for example.


You can also find me [https://www.grwiki.org/grwiki/index.php?title=User:Peter at the brand-new GR Wiki], and as ''Peter7000'' over at ''[https://www.wellenkino.de/557/ Wellenkino]''.
You can also find me [[grwiki:User:Peter|at  
Jerry's new '''''GR Wiki''' (for General Radio / GenRad instruments)'']] whose infrastructure Kurt and I helped set up, and as ''Peter7000'' over at ''[https://www.wellenkino.de/557/ Wellenkino]''.


Cheers
Cheers
Line 42: Line 42:
Tek7844-front.jpg                    | [[7844]] − my #1 go-to scope
Tek7844-front.jpg                    | [[7844]] − my #1 go-to scope
Tek_7854_rise_time.jpg                | [[7854]] − in great shape
Tek_7854_rise_time.jpg                | [[7854]] − in great shape
Tek-7904-front.jpg                    | [[7904]] (2) - worked for some time, PSU to be repaired
Tek-7904-front.jpg                    | [[7904]] (2) - worked for some time, [[Media:Servicing the Tek 7904 Power Supply.pdf|SMPS to be repaired]]
Tek7104-front.jpg                    | [[7104]] − tube worn but in decent shape overall
Tek7104-front.jpg                    | [[7104]] − tube worn but in decent shape overall
Tek-sc504-am503.jpg                  | [[SC504]]
Tek-sc504-am503.jpg                  | [[SC504]]
Line 49: Line 49:
===Other Instruments===
===Other Instruments===
<gallery hights=200px widths=200px>
<gallery hights=200px widths=200px>
308-timing.jpg              | [[308]] (~1980) − nobody else would pick it up at that hamfest
308-timing.jpg              | [[308|308 Logic Analyzer]] (~1980) – nobody else would pick it up at that hamfest
SonyTek AFG320 front.jpg    | Sony/Tek-branded [[AFG320]]
SonyTek AFG320 front.jpg    | Sony/Tek-branded [[AFG320|AFG320 Arbitrary Function Generator]]
Keithley 195A front.jpg      | [[Keithley 195A|Keithley 195A Multimeter]]
Keithley 485 front.jpg      | [[Keithley 485|Keithley 485 Picoamperemeter]] – my best-ever eBay deal (don't ask)
Keithley 610C front.jpg      | [[Keithley 610C|Keithley 610C Electrometer]]
</gallery>
</gallery>
... and some more at [[grwiki:User:Peter|GRWiki]]


===Carts, Cameras etc.===
===Carts, Cameras etc.===

Latest revision as of 23:02, 17 October 2024

Hi, my name is Peter (who would have guessed?). I was born and live in Austria. Originally an EE, my current day job is in IT, in an international environment.

The first Tek instrument I worked with – around 1982 IIRC – was a T912 "vacuum cleaner" which I must say left me "slightly underimpressed" compared with my favourite oscilloscopes at the time, the HP 1740 series.

For budget reasons, the first scope I bought for myself, circa 1986, was a rather pedestrian Kenwood 100 MHz 2-ch portable (a la 465). It did pay for itself through a consulting engagement (2nd generation products of this effort are still in service as of 2024), but I learned only some time later what the difference between a passable scope like that and a good scope was, when I compared them side by side in overdrive …

The first Tek scope in my own possession was the 7613 pictured below, which I bought in early 2014. Looking for manuals (its power supply needed some TLC), I found TekWiki. The resurrected 7613 did not remain alone for long. I worked my way up from good scopes to extraordinary ones – see below for the current population of Vintage Tek Sanctuary Central Europe.

On this Wiki, Kurt created an account for me in May 2014. I started to add a few photos and some data, then began building categories and some templates.

In June of that year, Kurt already gave me admin rights, thanks for the trust! One thing led to another … having been familiar with Mediawiki (I set up a corporate Intranet with that software in 2006 that is still in use), I started getting involved in this site's software side as well, and over the years helped expand its coverage a bit.

Feel free to contact me if you have questions about the Cargo database module, for example.

You can also find me at Jerry's new GR Wiki (for General Radio / GenRad instruments) whose infrastructure Kurt and I helped set up, and as Peter7000 over at Wellenkino.

Cheers

--Peter

Scopes

  • 213

    213

  • 310A

    310A

  • 465 − from the estate of a hobbyist

    465 − from the estate of a hobbyist

  • 502 − spent many years in a university lab attached to strain gages watching metal samples being broken, at the end reduced to be a DSO pre-amp

    502 − spent many years in a university lab attached to strain gages watching metal samples being broken, at the end reduced to be a DSO pre-amp

  • 511AD − from a physics institute in Slovenia

    511AD − from a physics institute in Slovenia

  • 545A − from a guy with a remarkable collection of early radios and phonographs

    545A − from a guy with a remarkable collection of early radios and phonographs

  • 549 − looted for tubes by some Bavarian vulture, restored & nursed back to health by Matt, additional minor repairs in my shop

    549 − looted for tubes by some Bavarian vulture, restored & nursed back to health by Matt, additional minor repairs in my shop

  • 585 − another university retiree

    585 − another university retiree

  • 2230 − this one had been working on the railroad ...

    2230 − this one had been working on the railroad ...

  • 7503 − worked in a plasma physics lab, then moved to the physics dept at a smaller university

    7503 − worked in a plasma physics lab, then moved to the physics dept at a smaller university

  • 7603 (2) − one cured of GHz oscillations but infested with cabling gremlins, the other barely survived rough handling

    7603 (2) − one cured of GHz oscillations but infested with cabling gremlins, the other barely survived rough handling

  • 7613 − my first 7k Tek

    7613 − my first 7k Tek

  • 7623A

    7623A

  • 7633 − supposedly from a private museum

    7633 − supposedly from a private museum

  • 7844 − my #1 go-to scope

    7844 − my #1 go-to scope

  • 7854 − in great shape

    7854 − in great shape

  • 7904 (2) - worked for some time, SMPS to be repaired

    7904 (2) - worked for some time, SMPS to be repaired

  • 7104 − tube worn but in decent shape overall

    7104 − tube worn but in decent shape overall

  • SC504

    SC504

Other Instruments

... and some more at GRWiki

Carts, Cameras etc.

Plugins

500 series

580 series

7000 series

S-series heads

TM500 series

Probes

Other

  • 1103 Probe power supply, front panel

    1103 Probe power supply, front panel

  • home-made A/B adapter for 7CT1N

    home-made A/B adapter for 7CT1N

  • home-made A/B adapter for 7CT1N

    home-made A/B adapter for 7CT1N

  • home-made A/B adapter version 2 with added slide switch to additionally test 4-pin or 6-pin optocouplers

    home-made A/B adapter version 2 with added slide switch to additionally test 4-pin or 6-pin optocouplers

  • 017-067

    017-067

Measurements

7104 speed

  • Faster-than-light beam on 7104? Using a 067-0587-02 calibration fixture at maximum amplitude produces this trace spanning 1.2 Div horizontally at 200 ps/Div and 8 Div vertically. Trace length is (1.2² + 8²)½ × 8.5 mm = 68.8 mm, travelled in 1.2 × 200 ps = 240 ps. Apparent speed is therefore 68.8×10-3 / 240×10-12 m/s or 2.86×108 m/s. Very near miss ...

    Faster-than-light beam on 7104? Using a 067-0587-02 calibration fixture at maximum amplitude produces this trace spanning 1.2 Div horizontally at 200 ps/Div and 8 Div vertically. Trace length is (1.2² + 8²)½ × 8.5 mm = 68.8 mm, travelled in 1.2 × 200 ps = 240 ps. Apparent speed is therefore 68.8×10-3 / 240×10-12 m/s or 2.86×108 m/s. Very near miss ...

  • 7104 rise time measurement. 150 ps risetime pulse from 067-0587-02 at 100 Hz repetition rate. Measured 240 ps (corrected for 150 ps fixture rise time: 190 ns = 1.8 GHz)

    7104 rise time measurement. 150 ps risetime pulse from 067-0587-02 at 100 Hz repetition rate. Measured 240 ps (corrected for 150 ps fixture rise time: 190 ns = 1.8 GHz)

  • 7104 rise time measurement as before, 1000 Hz repetition rate at same brightness settings.

    7104 rise time measurement as before, 1000 Hz repetition rate at same brightness settings.

  • 7104 recording a single shot pulse (from 067-0587-02) at 200 ps/Div. Camera: Nikon D7000, 50 mm f/1.4, ISO 3200, 1/2 s. CRT filter not removed.

    7104 recording a single shot pulse (from 067-0587-02) at 200 ps/Div. Camera: Nikon D7000, 50 mm f/1.4, ISO 3200, 1/2 s. CRT filter not removed.

  • 7104 recording 1 GHz sine, single shot at 500 ps/Div. Camera: Nikon D7000, 50 mm f/1.4, ISO 3200, 1/2 s. CRT filter not removed. CRT amplification loss is evident around the center line.

    7104 recording 1 GHz sine, single shot at 500 ps/Div. Camera: Nikon D7000, 50 mm f/1.4, ISO 3200, 1/2 s. CRT filter not removed. CRT amplification loss is evident around the center line.

Curve tracers

  • BC337 on 7CT1N

    BC337 on 7CT1N

  • no-name optocoupler on 7CT1N

    no-name optocoupler on 7CT1N

  • no-name optocoupler on 7CT1N using home-made test fixture

    no-name optocoupler on 7CT1N using home-made test fixture

  • home-made A/B fixture used to compare two transistors

    home-made A/B fixture used to compare two transistors

  • NE-2 neon bulb on a 7CT1N

    NE-2 neon bulb on a 7CT1N

  • one system of a 6J6 triode on a 7CT1N

    one system of a 6J6 triode on a 7CT1N

Miscellaneous 7000 series

  • A 7B92A (B098xxx) displaying a 1.01 GHz sine in HF Sync mode (7904 mainframe, 7A19 amplifier)

    A 7B92A (B098xxx) displaying a 1.01 GHz sine in HF Sync mode (7904 mainframe, 7A19 amplifier)

  • A 7B92A (B098xxx) triggering a 974 MHz sine applied via 067-0587-02 calibration fixture (7904 mainframe)

    A 7B92A (B098xxx) triggering a 974 MHz sine applied via 067-0587-02 calibration fixture (7904 mainframe)

  • Classic readout board diagnostic display

    Classic readout board diagnostic display

  • Tektronix 067-0587-02, gain mode, in horizontal slot

    Tektronix 067-0587-02, gain mode, in horizontal slot

  • Tektronix 067-0587-02, gain mode, in vertical slot

    Tektronix 067-0587-02, gain mode, in vertical slot

  • 7D14 screen picture - 500 MHz signal (7A19, 7B92A, 7904)

    7D14 screen picture - 500 MHz signal (7A19, 7B92A, 7904)

  • 7L13 displaying a POCSAG FSK signal at 162 MHz (variable persistence storage on a 7623)

    7L13 displaying a POCSAG FSK signal at 162 MHz (variable persistence storage on a 7623)

7B85 delay readout

  • 7B85 used for rise time measurement

    7B85 used for rise time measurement

  • 7B85 used for rise time measurement

    7B85 used for rise time measurement

  • 7B85 used for pulse width measurement

    7B85 used for pulse width measurement

  • 7B85 used for pulse period measurement

    7B85 used for pulse period measurement

  • 7B85 used for pulse period measurement

    7B85 used for pulse period measurement

7A22

  • 15 μVp-p triangle wave measured through 7A22. Using variable-persistence storage mode on a 7613 for noise filtering

    15 μVp-p triangle wave measured through 7A22. Using variable-persistence storage mode on a 7613 for noise filtering

  • sub-millivolt triangle signal displayed through 7A22, BW=1 kHz

    sub-millivolt triangle signal displayed through 7A22, BW=1 kHz

  • sub-millivolt triangle signal displayed through 7A22, BW=10 kHz

    sub-millivolt triangle signal displayed through 7A22, BW=10 kHz

  • sub-millivolt triangle signal displayed through 7A22, BW=100 kHz

    sub-millivolt triangle signal displayed through 7A22, BW=100 kHz

  • sub-millivolt triangle signal through 7A22, BW=1 MHz

    sub-millivolt triangle signal through 7A22, BW=1 MHz

Sampling

  • 7S11/7T11, 1 GHz sine, smooth mode, on variable-persistence storage scope (7613)

    7S11/7T11, 1 GHz sine, smooth mode, on variable-persistence storage scope (7613)

  • 7S11/7T11, 1 GHz sine, smooth mode

    7S11/7T11, 1 GHz sine, smooth mode

  • 7S11/7T11, 1 GHz sine, normal mode

    7S11/7T11, 1 GHz sine, normal mode

  • 7S11/S-4 and 7T11A displaying 1 GHz sine

    7S11/S-4 and 7T11A displaying 1 GHz sine

  • 7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)

    7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)

  • 7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)

    7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)

  • 7S12 as a sampler displaying a 1 GHz signal (normal mode / non-storage)

    7S12 as a sampler displaying a 1 GHz signal (normal mode / non-storage)

  • 7S12 displaying the incident pulse from an S-52 (nom. < 25 ps) through an S-6 head (nom. < 30 ps)

    7S12 displaying the incident pulse from an S-52 (nom. < 25 ps) through an S-6 head (nom. < 30 ps)

  • 7S12/S-6/S-52 "Self Portrait" - pulse reflected on S-6 "through" path (approx. 120 ps one way)

    7S12/S-6/S-52 "Self Portrait" - pulse reflected on S-6 "through" path (approx. 120 ps one way)

  • Full pulse pattern of a 7S12/S-52 in real time (top trace) and sampled (bottom trace) shown simultaneously on 7844. 7S12 trace at slowest possible sweep.

    Full pulse pattern of a 7S12/S-52 in real time (top trace) and sampled (bottom trace) shown simultaneously on 7844. 7S12 trace at slowest possible sweep.

  • S-52 pulse in real time (top trace) and sampled (bottom trace) shown simultaneously on 7844. Approximately equal time scales.

    S-52 pulse in real time (top trace) and sampled (bottom trace) shown simultaneously on 7844. Approximately equal time scales.

Probes

  • P6202 rise time measured with 7S12, S-4, S-52

    P6202 rise time measured with 7S12, S-4, S-52

  • P6202 rise time measured with 7S12, S-4, S-52

    P6202 rise time measured with 7S12, S-4, S-52

  • P6230 Rise time measured on a 7S12 with S-52 and S-4 heads, P6230 ground sleeve connected directly at S-52 output (no ground lead)

    P6230 Rise time measured on a 7S12 with S-52 and S-4 heads, P6230 ground sleeve connected directly at S-52 output (no ground lead)

  • P6230 Rise time without ground lead: 9.2 * 20 ps = 184 ps (equiv. to 1.9 GHz bandwidth)

    P6230 Rise time without ground lead: 9.2 * 20 ps = 184 ps (equiv. to 1.9 GHz bandwidth)

  • P6230 Rise time - Effect of using the "low inductance" ground lead - rise time 400 ps, bandwidth 875 MHz

    P6230 Rise time - Effect of using the "low inductance" ground lead - rise time 400 ps, bandwidth 875 MHz

  • P6230 Rise time - Using the 250 mm alligator ground lead - severe pulse distortion, rise time ~3 ns (115 MHz)!

    P6230 Rise time - Using the 250 mm alligator ground lead - severe pulse distortion, rise time ~3 ns (115 MHz)!

Current probes

  • P6022 / passive term. @ 10 mA/Div (top) vs. P6021+134 (bottom), sawtooth @ 100 mAp-p, 100 Hz

    P6022 / passive term. @ 10 mA/Div (top) vs. P6021+134 (bottom), sawtooth @ 100 mAp-p, 100 Hz

  • P6022 / passive term. @ 10 mA/Div (top) vs. P6021+134 (bottom), sawtooth @ 100 mAp-p, 1 kHz

    P6022 / passive term. @ 10 mA/Div (top) vs. P6021+134 (bottom), sawtooth @ 100 mAp-p, 1 kHz

  • P6022 / passive term. @ 10 mA/Div (top) vs. P6021+134 (bottom), sawtooth @ 100 mAp-p, 10 kHz

    P6022 / passive term. @ 10 mA/Div (top) vs. P6021+134 (bottom), sawtooth @ 100 mAp-p, 10 kHz

  • Measuring diode reverse recovery

    Measuring diode reverse recovery

  • Diode reverse recovery, 20 mA/Div

    Diode reverse recovery, 20 mA/Div

Other

  • Tunnel diode quick check example using the method from Service Scope 49. Right beam is zoomed with delayed timebase to show step speed.

    Tunnel diode quick check example using the method from Service Scope 49. Right beam is zoomed with delayed timebase to show step speed.

  • 7A29 rise time (7104, 7B10, pulse from S-52)

    7A29 rise time (7104, 7B10, pulse from S-52)

  • 308 display, timing mode (binary counter example)

    308 display, timing mode (binary counter example)

  • 308 display, state mode (binary counter example)

    308 display, state mode (binary counter example)

Lists

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