Difference between revisions of "TekPower TP4000ZC"
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| Line 139: | Line 139: | ||
=== Segment lettering === | === Segment lettering === | ||
|-- | |--C--| | ||
| | | | | | ||
B G | |||
| | | | | | ||
|-- | |--F--| | ||
| | | | | | ||
E | A E | ||
| | | | | | ||
|--D--| | |--D--| | ||
== Resources == | == Resources == | ||
Revision as of 00:14, 20 October 2012
the TekPower TP4000ZC is a 4000 counts handheld digital multimeter with RS232 connectivity.
Hardware
TODO
Photos
TODO
Protocol
The device periodically sends 14-byte packets at 2400 baud, 8n1. The packet includes a mode indicator, payload and checksum. the payload 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--|
Resources
- [1] (TODO)