MHINSTEK MHS-5200A

MHS-5200A

Status	planned
Frequency (user)	0.01Hz-6MHz/12MHz/20MHz/25Hz
Waveforms	sine/square/triangle/sawtooth/arbitrary, TTL rect
Amplitude	20 V (open)/10 V (50 Ohm) (adjustable)
Connectivity	USB to serial converter (internal)

The MHS-5200A-06M/12M/20M/25M is a Dual-Channel standalone function generator. It can be controlled with the push-buttons and the rotary encoder on the front panel, or via a USB interface.

Amplitude and offset voltage can be controlled programmatically.

This device can be bought on ebay or aliexpress from various sellers for 50-90€.

Hardware (Q3 2016 model)

• FPGA: Lattice MACH XO2 1200HC TQFP-100
• Clock: unknown
• STM8S005K6 8-bit MCU with 32 Kbytes Flash, 16 MHz CPU, integrated 128 byte EEPROM STM8S005K6 product page
• Output Stage:
  • R2R-Ladder 12bit DAC
  • Signal/DC-Offset sum: AD8017 Op-Amp
  • Variable Gain Amplifier: AD603A
  • Power Amplifier: AD812A
  • Output switch relais: 0db/-20db/off
• 24LC512 I2C EEPROM, 512Kb (64K x 8) for Arbitrary Waveform Data
• 74AHC14D Hex inverting Schmitt trigger

According to the specs, the hardware should run at 200MS/s, but measurement shows it only runs at ~175MS/s.

Photos

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Connection

The generator has an internal USB-to-serial converter. The VID/PID is xxxx:xxxx.

Protocol

The generator uses a plain text protocol for communication.