Focussz Fosc21
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The Focussz Fosc21 is a USB-based, 2-channel oscilloscope with an analog bandwidth of 3kHz and a sampling rate of 8kHz (1 channel) / 4kHz (2 channels). The manufacturer improperly calls this device an oscilloscope: It can only measure voltages from 0-5V, and thus cannot measure negative voltages.
See Focussz Fosc21/Info for more details (such as lsusb -vvv output) about the device.
Hardware
- Main chip: ST STM8S103 (marking: "STM8S103-K3T6C 990XB F6 MYS 136")
- USB interface: Prolific PL-2303HX (marking: "PL-2303HX LE10193A")
- Crystals: 12.000 and 22.1184
Photos
Device and probes
Package contents
Device, top
Device, bottom
Device, connectors
Device, back
PCB, top
PCB, bottom
ST STM8S103-K3T6C
Prolific PL2303HX
Protocol
TODO.