Difference between revisions of "MHINSTEK MHS-5200A"

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{{Infobox signal generator
{{Infobox signal generator
| image = [[File:MHINSTEK_MHS-5200A_persp.jpg|180px]]
| image           = [[File:MHINSTEK_MHS-5200A_persp.jpg|180px]]
| name = MHS-5200A
| name           = MHINSTEK MHS-5200A
| status = planned
| status         = in progress
| source_code_dir =  
| source_code_dir =  
| frequser = 0.01Hz-6MHz/12MHz/20MHz/25Hz
| frequser       = 0.01Hz-6MHz/12MHz/20MHz/25Hz
| waveforms = sine/square/triangle/sawtooth/arbitrary, TTL rect
| waveforms       = sine/square/triangle/sawtooth/arbitrary, TTL rect
| amplitude = 20 V (open)/10 V (50 Ohm) (adjustable)
| amplitude       = 20 V (open)/10 V (50 Ohm) (adjustable)
| connectivity = USB to serial converter (internal)
| connectivity   = USB/serial
| website        = [https://translate.googleusercontent.com/translate_c?depth=1&hl=en&ie=UTF8&prev=_t&rurl=translate.google.com&sl=auto&sp=nmt4&tl=en&u=http://www.mhinstek.com/product/html/%3F88.html&xid=17259,1500003,15700002,15700022,15700124,15700149,15700168,15700173,15700186,15700190,15700201&usg=ALkJrhj5uwzXTjOX5J5IsZRbjEe2d8Li_w mhinstek.com]
}}
}}


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
The '''MHINSTEK 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.
encoder on the front panel, or via a USB interface.


Amplitude and offset voltage can be controlled programmatically.
Amplitude and offset voltage can be controlled programmatically.


This device can be bought on ebay or aliexpress from various sellers for 50-90€.
Device also supports different measurements via 'Ext. In' or 'TTL' channels. It can measure: frequency, counter, pulse width, period and duty cycle.


== Hardware (Q3 2016 model) ==
== Hardware (Q3 2016 model) ==
* FPGA: Lattice MACH XO2 1200HC TQFP-100
* FPGA: Lattice MACH XO2 1200HC TQFP-100
* Clock: unknown
* Clock: unknown
* STM8S005K6 8-bit MCU with 32 Kbytes Flash, 16 MHz CPU, integrated 128 byte EEPROM [http://www.st.com/en/microcontrollers/stm8s005k6.html STM8S005K6 product page]
* STM8S005K6 8-bit MCU with 32 Kbytes Flash, 16 MHz CPU, integrated 128 byte EEPROM [http://www.st.com/en/microcontrollers/stm8s005k6.html STM8S005K6 product page]
* Output Stage:
* Output stage:
** R2R-Ladder 12bit DAC
** R2R-ladder 12bit DAC
** Signal/DC-Offset sum: AD8017 Op-Amp
** Signal/DC-offset sum: AD8017 Op-Amp
** Variable Gain Amplifier: AD603A
** Variable gain amplifier: AD603A
** Power Amplifier: AD812A
** Power amplifier: AD812A
** Output switch relais: 0db/-20db/off
** Output switch relais: 0db/-20db/off
* 24LC512 I2C EEPROM, 512Kb (64K x 8) for Arbitrary Waveform Data
* 24LC512 I²C EEPROM, 512Kb (64K x 8) for arbitrary waveform data
* 74AHC14D Hex inverting Schmitt trigger
* 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.
According to the specs, the hardware should run at 200MS/s, but measurement shows it only runs at ~175MS/s.
Line 35: Line 37:


<gallery>
<gallery>
MHINSTEK MHS-5200A startscreen1.jpg
MHINSTEK MHS-5200A startscreen1.jpg|<small>Device, front</small>
MHINSTEK MHS-5200A startscreen2.jpg
MHINSTEK MHS-5200A startscreen2.jpg|<small>Device, front</small>
MHINSTEK MHS-5200A base.jpg
MHINSTEK MHS-5200A base.jpg|<small>PCB, top</small>
MHINSTEK MHS-5200A analog.jpg
MHINSTEK MHS-5200A analog.jpg|<small>PCB, analog circuitry</small>
MHINSTEK MHS-5200A back.jpg
MHINSTEK MHS-5200A back.jpg|<small>PCB, bottom</small>
MHINSTEK MHS-5200A CH340.jpg|<small>2015 version PCB, with CH340</small>
</gallery>
</gallery>


== Connection ==
== Connection ==
The generator has an internal USB-to-serial converter. The VID/PID is xxxx:xxxx.
 
The generator has an internal PL2303 USB-to-serial converter. The VID/PID is 067b:2303. Communication parameters are 57600 bps, 8N1.
 
The earlier 2015 version (firmware 4.22) has CH340 chip for USB-to serial converter, so the VID/PID is 1a86:7523, while rest of the components and functions remain unchanged.


== Protocol ==
== Protocol ==


The generator uses a plain text protocol for communication.
The generator uses a plain text protocol for communication.
Each command (''set'' or ''read'') starts with ':' and has to be terminated with a newline, ASCII code 0x0a (but CRLF, i.e. 0x0d 0x0a, is also accepted).
''Set'' commands are acknowledged with an 'ok' response, ''read'' commands echo the request followed by the parameter value.
== Resources ==
* [http://www.analogzoo.com/2015/08/mhs-5200a-teardown-and-review/ analogzoo.com: MHS-5200A Teardown and Review]
* [http://www.eevblog.com/forum/testgear/mhs-5200a-serial-protocol-reverse-engineered/ eevblog.com: MHS-5200A Serial Protocol Reverse Engineered]
* [https://docs.google.com/document/d/1HbLQ4u87RJkD3Ktyw7k9U7Zh5BPNzbrhMlszNGdXiiY/edit Google docs: MHS5200A Protocol]

Latest revision as of 22:56, 8 February 2021

MHINSTEK MHS-5200A
MHINSTEK MHS-5200A persp.jpg
Status in progress
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/serial
Website mhinstek.com

The MHINSTEK 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.

Device also supports different measurements via 'Ext. In' or 'TTL' channels. It can measure: frequency, counter, pulse width, period and duty cycle.

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

  • Device, front

  • Device, front

  • PCB, top

  • PCB, analog circuitry

  • PCB, bottom

  • 2015 version PCB, with CH340

Connection

The generator has an internal PL2303 USB-to-serial converter. The VID/PID is 067b:2303. Communication parameters are 57600 bps, 8N1.

The earlier 2015 version (firmware 4.22) has CH340 chip for USB-to serial converter, so the VID/PID is 1a86:7523, while rest of the components and functions remain unchanged.

Protocol

The generator uses a plain text protocol for communication.

Each command (set or read) starts with ':' and has to be terminated with a newline, ASCII code 0x0a (but CRLF, i.e. 0x0d 0x0a, is also accepted).

Set commands are acknowledged with an 'ok' response, read commands echo the request followed by the parameter value.

Resources

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