T202
The Tektronix T202 is a battery-powered, hand-held 5 MHz digital storage scope with voltmeter and frequency counter functions. It has a 128x128 monochrome LCD.
This was an OEM version of a Createc SC series unit, introduced in the mid-1980s, which was also sold under other brands.
Key Specifications
- please add
Links
- Tektronix T202 @ radiomuseum.org
- Thead on Createc SC-04 with internal pictures
- [[https://vintagetek.org/t200-series-handheld-oscilloscopes/ page on vintageTEK on the introduction of the T200 series
Pictures
-
-
-
-
-
-
-
-
-
-
-
-
-
-
The slide switches are patented
-
The screws for opening the unit are hidden behind so called "warranty plugs". These plugs can't be removed without destroying them
-
4 boards are stacked upon each other. The digital board is covered within an aluminium foil
-
View on the potentiometer for LCD contrast and the protection resistors
-
view on the BNC connecters. The ground path is protected with a 4mm glass fuse
-
Top view on the analog board. he A/D converter is a PNA7509 - a 7bit/22MHz unit.
-
The bottom reveals some SMD components
-
Top view of the digital board. It contains a microcontroller with typical RAM/Rom combination, but also a voltage reference and 2 proprietary ICs for signal processing.
-
The bottom reveals some SMD components
-
Overview of the display board
-
The display unit is a complete package
-
This board also contains proprietary ICs. The top half is the graphics processor with some RAM. The bottom contains the keyboard circutry.
-
The external powersupply with removed battery cover
-
Closeup of the power supply board
-
Rear view of the power supply board
-
A bag with a pair of probes
Test procedures
-
The firmware reveals that some diagnostic routines are integrated into the scope. These are not mentioned in the user manual.
