MASTECH MS2203
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 | |
| Status | planned |
|---|---|
| Counts | 9999 |
| IEC 61010-1 | CAT III (600V) |
| Connectivity | RS232 optical |
| Measurements | AC voltage, AC current, active power, apparent power, reactive power, power factor, active energy, frequency |
| Features | autorange, true-rms, data hold, min/max, bargraph, backlight |
| Website | mastech-group.com MS2203 |
The MASTECH MS2203 is a 9999 counts, CAT III (600V) handheld dual display digital AC/DC clamp meter with serial connectivity.
Photos
Package, top
Package, bottom
Package, contents
Package, contents
Device, top
Device, bottom
Protocol
The device periodically sends 23-byte packets at 19200 baud, 8n1. There is no checksum or CRC in the packet.
The sync byte (23th) is Line Feed; LF, 0x0A, \n.
The byte sequence are as follow:
| Name | BIT7 | BIT6 | BIT5 | BIT4 | BIT3 | BIT2 | BIT1 | BIT0 | ASCII | Hexadecimal |
|---|---|---|---|---|---|---|---|---|---|---|
| START1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | ENQ | 0x05 |
| START2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | ENQ | 0x05 |
| UNIT_DOWN | - | min | hmin | Hz | kVAr | A | V | batt | ||
| UNIT_UP | kWh | kW | : | - | A | V | KVA | - | ||
| D0_UP | lowest character | 最低位字符 | ||||||||
| D1_UP | lower two characters | 低二位字符 | ||||||||
| D2_UP | high two characters | 高二位字符 | ||||||||
| D3_UP | most significant character | 最高位字符 | ||||||||
| FUNCTION1 | W3Ø | W | Ø3 | Σ | Ø2 | Ø1 | H | |||
| FUNCTION2 | DC | AC | UP(-) | - | MAX | FREQ | PF | DOWN(-) | ||
| FUNCTION3 | MIN | Time | MEM | MR | - | M1 | M2 | - | ||
| COUNTER | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0x30 |
| 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0x31 | |
| 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 2 | 0x32 | |
| 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 3 | 0x33 | |
| 0 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 4 | 0x34 | |
| 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 5 | 0x35 | |
| 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 6 | 0x36 | |
| 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 7 | 0x37 | |
| 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 | 0x38 | |
| 1 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 9 | 0x39 | |
| D0_DOWN | lowest character | 最低位字符 | ||||||||
| D1_DOWN | lower two characters | 低二位字符 | ||||||||
| D2_DOWN | high two characters | 高二位字符 | ||||||||
| D3_DOWN | most significant character | 最高位字符 | ||||||||
| BAR6 | - | - | - | - | ► | - | - | - | ||
| BAR5 | L40 | L39 | L38 | L37 | L36 | L35 | L34 | L33 | ||
| BAR4 | L32 | L31 | L30 | L29 | L28 | L27 | L26 | L25 | ||
| BAR3 | L24 | L23 | L22 | L21 | L20 | L19 | L18 | L17 | ||
| BAR2 | L16 | L15 | L14 | L13 | L12 | L11 | L10 | L9 | ||
| BAR1 | L8 | L7 | L6 | L5 | L4 | L3 | L2 | L1 | ||