Difference between revisions of "MASTECH MS8250D"

From sigrok
Jump to: navigation, search
(MASTECH MS8250D is merged.)
 
(7 intermediate revisions by 2 users not shown)
Line 1: Line 1:
 
{{Infobox multimeter
 
{{Infobox multimeter
| image          = [[File:P1040343.jpg |100px]]
+
| image          = [[File:Mastech ms8250d mugshot.png|180px]]
 
| name            = MASTECH MS8250D
 
| name            = MASTECH MS8250D
| status          = in progress
+
| status          = supported
| source_code_dir =  
+
| source_code_dir = serial-dmm
 
| counts          = 6600
 
| counts          = 6600
 
| categories      = CAT III (1000V) / CAT IV (600V)
 
| categories      = CAT III (1000V) / CAT IV (600V)
Line 18: Line 18:
 
== Hardware ==
 
== Hardware ==
  
CP2102 USB to UART Bridge Controller
+
* CP2102 USB to UART bridge controller
 
+
* HY11P14 embedded 18-Bit Σ∆ADC 8-Bit RISC-like mixed signal microcontroller ([http://www.hycontek.com/wp-content/uploads/HY11P14_EN.pdf datasheet])
HY11P14 Embedded 18-Bit Σ∆ADC 8-Bit RISC-Like Mixed Signal Microcontroller
+
* DTA0660L multimeter chip
 
+
* ATMLH538 EEPROM
DTA0660L
 
 
 
ATMLH538
 
  
 
== Photos ==
 
== Photos ==
  
 
<gallery>
 
<gallery>
P1040343.jpg
+
File:P1040343.jpg|<small>Device, front</small>
P1040378.jpg
+
File:P1040378.jpg|<small>PCB, front</small>
P1040348.jpg
+
File:P1040348.jpg|<small>Device, inside</small>
P1040388.jpg
+
File:P1040388.jpg|<small>USB / serial interface</small>
 
</gallery>
 
</gallery>
  
 
== Protocol ==
 
== Protocol ==
 +
 +
The chip periodically sends 18-byte packets at 2400 baud, 8n1. There is no checksum or CRC in the packet.
 +
 +
The payload is composed of a 1-1 mapping of the LCD segments.
  
 
== Resources ==
 
== Resources ==
Line 44: Line 45:
 
[[Category:Device]]
 
[[Category:Device]]
 
[[Category:Multimeter]]
 
[[Category:Multimeter]]
[[Category:In progress]]
+
[[Category:Supported]]

Latest revision as of 23:18, 26 April 2018

MASTECH MS8250D
Mastech ms8250d mugshot.png
Status supported
Source code serial-dmm
Counts 6600
IEC 61010-1 CAT III (1000V) / CAT IV (600V)
Connectivity USB/serial
Measurements voltage, current, resistance, capacitance, frequency, duty cycle, diode, continuity
Features autorange, true-rms, data hold, min/max, relative, bargraph, backlight, ncv
Website mastech-group.com

The MASTECH MS8250D is a 6600 counts, CAT III (1000V) / CAT IV (600V) handheld digital multimeter with USB connectivity.

See MASTECH MS8250D/Info for more details (such as lsusb -v output) about the device.

Hardware

  • CP2102 USB to UART bridge controller
  • HY11P14 embedded 18-Bit Σ∆ADC 8-Bit RISC-like mixed signal microcontroller (datasheet)
  • DTA0660L multimeter chip
  • ATMLH538 EEPROM

Photos

Protocol

The chip periodically sends 18-byte packets at 2400 baud, 8n1. There is no checksum or CRC in the packet.

The payload is composed of a 1-1 mapping of the LCD segments.

Resources