Difference between revisions of "TekPower TP4000ZC"
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File:Tp4000zc_back_nocover.jpg|<small>Holster removed, back</small> | File:Tp4000zc_back_nocover.jpg|<small>Holster removed, back</small> | ||
File:Tp4000zc_batt.jpg|<small>Battery compartment</small> | File:Tp4000zc_batt.jpg|<small>Battery compartment</small> | ||
File:Tp4000zc_open_back.jpg|<small>Rear cover</small> | |||
File:Tp4000zc_open_front.jpg|<small>Front cover</small> | |||
File:Tp4000zc_open_front noboard.jpg|<small>Front cover, PCB removed</small> | |||
</gallery> | </gallery> | ||
Revision as of 05:40, 26 October 2012
The TekPower TP4000ZC is a 4000 counts handheld digital multimeter with RS232 connectivity.
Hardware
This multimeter appears to be a rebadged Digitek DT4000ZC.
TODO
Photos
Device, angle
Mugshot
Device, back
Package contents
Holster removed, front
Holster removed, back
Battery compartment
Rear cover
Front cover
Front cover, PCB removed
Protocol
The device periodically sends 14-byte packets at 2400 baud, 8n1. The MSB nibble of each byte indicates the byte number. The payload is composed of the LSB nibbles, and is a 1-1 mapping of the LCD segments.
Packet structure
| Byte | 7-4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|
| 0 | 0x1 | AC | DC | Auto | RS232 |
| 1 | 0x2 | Negative | 1A | 1B | 1C |
| 2 | 0x3 | 1D | 1E | 1F | 1G |
| 3 | 0x4 | DP1 | 2A | 2B | 2C |
| 4 | 0x5 | 2D | 2E | 2F | 2G |
| 5 | 0x6 | DP2 | 3A | 3B | 3C |
| 6 | 0x7 | 3D | 3E | 3F | 3G |
| 7 | 0x8 | DP3 | 4A | 4B | 4C |
| 8 | 0x9 | 4D | 4E | 4F | 4G |
| 9 | 0xa | u | n | k | Diode |
| 10 | 0xb | m | % | M | Beep |
| 11 | 0xc | Farads | Ohms | Rel | Hold |
| 12 | 0xd | A | V | Hz | Low battery |
| 13 | 0xe | hFE | Celsius | Reserved | Reserved |
Segment lettering
| C | ||
| B | G | |
| F | ||
| A | E | |
| D |