Soviet 7000-series clones: Difference between revisions

Revision as of 14:47, 19 February 2017

The family of Soviet clones of Tektronix 7000-series scopes included models S1-91, S1-115, S1-122 and S8-21 (Cyrillic: С1-91 etc.). They used the same plug-in modules, of which 14 types were available.

The base model S1-91 was introduced in 1977 and had 100 MHz bandwidth. It was "heavily inspired" by the Tektronix 7603. Unlike the 7603 it only has a 1 cm graticule size.

These scopes were designed at Vilnius Research and Development Institute of Radio Measuring Instruments (Lithuania).

However, they are not directly compatible with Tektronix plugins since mechanical parts and connectors use metric sizes.

Specifications

S1-122 (С1-122) mainframe	A4S-90 (Я4С-90) amplifier plug-in	A4S-91 (Я4С-91) time base plug-in
3 plug-in bays 100 MHz bandwidth 100 mm x 120mm usable screen area 17.5 kV accelerating voltage Readout system Power: 220 +/- 22 V, 150 W Weight: 17 kg (37.5 lb)	2 channels bandwidth DC to 100 MHz rise time 3,5 ns deflection factor 5 mV/div to 5 V/div.	trigger up to 100 MHz (min. 0.8 div internal or 0.4 V external) sweep A: 5 ns/div. to 50 ms/div. sweep B: 20 ns/div. to 5 ms/div

Plugins

Я4C-90 Amplifier
Я4C-91 Timebase
Я4C-89 Pulse Generator (?)
Я4C-95 Sampling Timebase
Я4C-96 Sampling Unit
Я4C-98 Digital Delay
Я4C-97 Digital Multimeter
Я4C-92 Curve Tracer
Я4C-100 Dual Channel Sampler
Я4C-101 Sampling Timebase
Я4C-102 Delay Line
Я4C-105 "Measuring Unit" (?)

Manuals

Links

Pictures

S1 family
S1-91/4 18 GHz sampler (1981)
S1-122 internals
S1-122 plugin motherboard
Vertical amplifier plug-in

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 * YouTube: [http://www.youtube.com/watch?v=faW1udB_5J4 S1-91 Clip 1] / [http://www.youtube.com/watch?v=e9M2VEJWZIw S1-91 Clip 2] / [http://www.youtube.com/watch?v=Sztfpt7XgSg S1-65] / [http://www.youtube.com/watch?v=0brgTq_-5f8 S1-55]
 * [http://electronicsplayground.blogspot.com/2015/07/teardown-of-old-russian-c1-91-100-mhz-2.html Teardown of Russian S1-91] / [https://picasaweb.google.com/110876471461384099061/C191OscilloscopeTeardown?feat=directlink# Picture Album]
+* [https://martin-jones.com/2017/02/19/tektronix-7a18-versus-soviet-%D1%8F4c-90/ Comparison of Tektronix 7A18 and Soviet Я4C-90]
 ==Pictures==