Soviet 7000-series clones

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. (Compare also the Hungarian TR-4658.) Unlike the 7603, the S1-91 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 120 mm 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

Mainframes

C1-91
C1-115
C1-122
C8-21 storage

Plugins

Я4C-90 Amplifier (like Tek 7A18)
Я4C-91 Timebase (like Tek 7B53A)
Я4C-89 Pulse Generator
Я4C-92 Curve Tracer
Я4C-95 Sampling Timebase
Я4C-96 Sampling Unit
Я4C-98 Digital Delay
Я4C-97 Digital Multimeter (like Tek 7D13)
Я4C-100 Dual Channel Sampler (similar to Tek 7S11)
Я4C-101 Sampling Timebase (like Tek 7T11)
Я4C-102 Delay Line (like Tek 7M11)
Я4C-105 "Measuring Unit" (?)
Я4С-110 Logic analyzer (3 units wide, like Tek 7D01/DF1)
Я4С-122 Digital storage scope (3 units wide, like Tek 7D20)

Manuals

Links

Pictures

S1 family
S1-91/4 18 GHz sampler (1981)
S1-122 internals
S1-122 plugin motherboard
Vertical amplifier plug-in
2K11
2K11