Createc: Difference between revisions

Revision as of 05:56, 2 December 2024

CREATEC Gesellschaft für Elektrotechnik GmbH was a German company founded by Manfred Koslar in Berlin in 1981.

Their only product line was a series of battery-powered, handheld digital oscilloscopes which were released in 1986. These scopes were also re-branded by Gossen/Norma and Hitachi. Tektronix rebranded the basic model as the T201, but also offered the same model with a different user interface as the T202. The company probably closed in the early 1990ies (see link section).

Key Specifications

Bandwidth	6/9 MHz
Resolution	7 bit (V)
Memory	between 9 and 46 waveforms, depending on the model
Sampling rate	10 or 20MS/s, depending on mode and model
Single-shot performance	2MHz
External interface	serial + parallel
Dimensions	257mm x 111mm x 48mm
Display resolution	128 x 128 pixel
Features	Signal processing (add, subtract, multiply, divide) Cursor measurements Zoom function Waveform parameter measurements partial automatic calibration Multimeter mode Display maximum error of current measurements Independent timebases for each channel Auto scaling for X and Y available
Options	Real time clock parallel + serial interface built-in drivers for various printers improved "super twisted" LCD dual analog path with 2 A/D converters increased memory depth DOS software (Createc Wave) External battery pack + transport cases

Feature comparison

The T201+T202 are added for completeness only

	SC01	SC01A	T201 T202	SC02	SC03	SC04	SC05
Bandwith (MHz)	6	6	5(*)	6	9	6	9
Single Shot (MHz)			2
Sampling rate (MS/S)	20 (10)	20 (10)	20 (10)	2x20	2x20	2x20	2x20
Memory depth (record length)	2x128 or 1x256	2x128 or 1x256	2x128 or 1x256	2x256	2x2048	2x256	2x2048
Memory capacity (waveforms)	9	9	9	46	14	46	14
Memory for operational settings	1	1	1	10	10	10	10
serial+parallel interface	-	-	-	-	-	Y	Y
RTC	-	-	-	-	-	Y	Y
Blue "super twisted" LCD	-	Y	.	Y	Y	Y	Y

Same hardware - bandwidth difference probably only due to different measurement standards

Block diagram

Service documents aren't available. But Mr. Koslar luckily filed nearly 200 patents (including all country variants) during his life. At least five of them are related to the SC series. These patents not only include a block-level based functional description of the complete device - they also describe the functionality of the proprietary ICs.

Block diagram of the Createc SC series
Block diagram of the Createc SC series
The two-stage FET-based push-pull amplifier
Block diagram of the cross multiplexer
Block diagram of the data conversion processor
Block diagram of the integration of the display processor
Block diagram of the display processor

Manuals

German version of the Createc SC series manual

Links

[[https://www.wolfgangrobel.de/electronics/createc.htm A page about the Hitachi VC-5024 rebrand, but also some information about Createc
[[https://vintagetek.org/t200-series-handheld-oscilloscopes/ page on vintageTEK on the introduction of the T200 series
[[https://www.welt.de/print-wams/article607404/Manfred-Koslar-der-Meistertueftler-aus-Moabit.html 2002 article in German newspaper which mentions why and when Createc closed. automatic english translation
Electronics Magazine on the Createc SC series
Funkschau Magazine on the Createc SC series
Funkschau Magazine on Manfred Koslar and the SC series development
T201
T202

@@ Line 9: / Line 9: @@
 [[File:ManfredKoslar.jpg|thumb|300px|right|Manfred Koslar]]
 [[File:Createc_SC01.jpeg|thumb|300px|right|Createc SC01]]
-Their only product line was a series of battery-powered, hand-held digital oscilloscopes which were released in 1986. These scopes were also re-branded by [[Gossen/Norma]] and [[Hitachi]]. Tektronix rebranded the basic modell as the [[T201]], but also offered the same modell with a different user interface as the [[T202]]. The company probably closed in the early 1990ies (see link section).
+Their only product line was a series of battery-powered, handheld digital oscilloscopes which were released in 1986. These scopes were also re-branded by [[Gossen/Norma]] and [[Hitachi]]. Tektronix rebranded the basic model as the [[T201]], but also offered the same model with a different user interface as the [[T202]]. The company probably closed in the early 1990ies (see link section).
 {{BeginSpecs}}
@@ Line 29: / Line 29: @@
 * Multimeter mode
 * Display maximum error of current measurements
-* Independant timebases for each channel
+* Independent timebases for each channel
 * Auto scaling for X and Y available
 }}
@@ Line 139: / Line 139: @@
 |}
-* Same hardware - bandwith difference probably only due to different measurement standards
+* Same hardware - bandwidth difference probably only due to different measurement standards
 ==Block diagram==
 Service documents aren't available. But Mr. Koslar luckily filed nearly 200 patents (including all country variants) during his life. At least five of them are related to the SC series.
-These patents not only include a block-level based function description of the complete deivce - they also describe the functionality of the proprientry ICs.
+These patents not only include a block-level based functional description of the complete device - they also describe the functionality of the proprietary ICs.
 * [[Media:Createc_US4433303A.pdf|United States Patent 4433303A: Push-pull amplifier circuit with FETs]]
-* [[Media:Createc_US4746771A.pdf|United States Patent 4746771A: Slde switch]]
+* [[Media:Createc_US4746771A.pdf|United States Patent 4746771A: Slide switch]]
 * [[Media:Createc_US4839638A.pdf|United States Patent 4839638A: Programmable circuit for controlling a LCD]]
 * [[Media:Createc_US4897599A.pdf|United States Patent 4897599A: Signal processing device with a level adapter circuit]]
@@ Line 152: / Line 152: @@
 <gallery>
-Createc_blockdiag01.jpg|Block diagram of the createc SC series
+Createc_blockdiag01.jpg|Block diagram of the Createc SC series
-Createc_blockdiag02.jpg|Block diagram od the createc SC series
+Createc_blockdiag02.jpg|Block diagram of the Createc SC series
 Createc_blockdiag05.jpg|The two-stage FET-based push-pull amplifier
 Createc_blockdiag03.jpg|Block diagram of the cross multiplexer
@@ Line 169: / Line 169: @@
 * [[https://vintagetek.org/t200-series-handheld-oscilloscopes/ page on vintageTEK on the introduction of the T200 series
 * [[https://www.welt.de/print-wams/article607404/Manfred-Koslar-der-Meistertueftler-aus-Moabit.html 2002 article in German newspaper which mentions why and when Createc closed. [[Media:WAMS_article_Manfred_Koslar_2002_09_29.pdf|automatic english translation]]
+* [[Media:Electronics-1986-04-14_page22.pdf|Electronics Magazine on the Createc SC series]]
+* [[Media:Funkschau_1986_01.pdf|Funkschau Magazine on the Createc SC series]]
+* [[Media:Funkschau_1986_02.pdf|Funkschau Magazine on Manfred Koslar and the SC series development]]
 * [[T201]]
 * [[T202]]
 [[Category:Companies]]