Hantek PSO2020

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Hantek PSO2020
Hantek PSO2020 0.JPG
Status
Source code [1]
Channels 1
Samplerate 96MHz
Analog bandwidth 20MHz
Vertical resolution 8bit
Triggers none (SW-only)
Input impedance 1MΩ‖25pF
Memory none
Display none
Connectivity USB
Website hantek.com

The Hantek PSO2020 is a USB-based, 1-channel oscilloscope with an analog bandwidth of 20MS/s and 96MS/s sampling rate. Wide input rage, from ±100mV to ±50V.

See Hantek PSO2020/Info for more details (such as lsusb -v output) about the device.

Hardware


Microchip 24LC02BI pinout:

(Low, but not GND) A0 1-   O -8 VCC
(GND) A1 2- -7 WP (GND)
(GND) A2 3- -6 SCL (FX2 SCL)
VSS 4- -5 SDA (FX2 SDA)

Analog Devices ADS9288 pinout:

AD9288 pins Description
S1, S2 Tied to VCC. "Data Align Enabled (data from both channels available on rising edge of Clock A. Channel B data is delayed a 1/2 clock cycle).".
DFS Tied to GND. Data format select = "offset binary" (not "twos complement").
REF_IN_A, REF_IN_B Tied to REF_OUT.
AINA, AINB Analog input channels.

Cypress FX2 pinout:

FX2 pins Description
CTL0 Connected to AD9288 ENCA, to ENCB with an inverter. and to FX2 IFCLK.
PB0-PB7 Connected to AD9288 D0A-D7A.
PD0-PD7 Connected to AD9288 D0B-D7B.
PA0, PA1, PA5 (Inputs) Connected to the 3 buttons
PC0, PC3, PE?, PE? (Inputs) Connected to the front selector
PC4 AC/DC Selector
PA7 Voltage Selection Relay
PA6 Green LED
PE1 Front light

Photos

Protocol

Firmware

Note: The firmware is not flashed into the device permanently! It will be automatically "uploaded" to the Cypress FX2's SRAM every time you attach the device to a USB port.

EEPROM layout

The device has a 256-byte I²C EEPROM with the following layout:

c0 b4 04 23 60 00 00 00 91 91 91 91 8a 8a 85 85
81 81 91 91 8a 8a 85 81 81 81 81 81 91 91 91 91
8a 8a 85 85 81 81 91 91 8a 8a 85 81 81 81 81 81
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff

Description:

Bytes Description
0 0xc0: FX2 "c0 load" mode, i.e. VID/PID/DID are loaded from EEPROM (but not firmware).
1-2 0x04b4: USB vendor ID (VID).
3-4 0x6023: USB product ID (PID).
5-6 0x0000: USB device ID (DID).
7 0x00: FX2 configuration byte (see FX2 TRM for details).
8-47 Unknown. Possibly calibration data?
48-255 All-0xff.

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