TekPower TP4000ZC¶
TekPower TP4000ZC¶
| Status | supported |
| Source code | serial-dmm |
| Counts | 4000 |
| IEC 61010-1 | CAT II (600V) |
| Connectivity | RS232 |
| Measurements | voltage, resistance, continuity, diode, capacitance, frequency, temperature, current, duty cycle |
| Features | autorange, data hold, relative |
| Website | tekpower.us |
The TekPower TP4000ZC is a 4000 counts, CAT II (600V) handheld digital multimeter with RS232 connectivity.
This multimeter is a rebadged Digitek DT4000ZC.
Hardware¶
Multimeter:
- Multimeter IC: The microcontroller is an unidentifiable plastic blob (based on the communication protocol, probably a Fortune Semiconductor FS9721_LP3)
- LM358 opamp
- HEF4013BT flip-flop
- The RS-232 connector is a standard 3.5m stereo jack, with the ring left unconnected. The transmitter is optically insulated from the rest of the device.
Cable:
- See Device_cables#Digitek_DT4000ZC_cable.
- The DB-9 connector has a loopback resistor between the RX and TX pins.
Photos¶
Tp4000zc Chip
Tp4000zc Chip Lm358
Tp4000zc Open Back
Tp4000zc Back
Tp4000zc Back Nocover
Tp4000zc Front Nocover
Tp4000zc 232 Module
Tp4000zc Pcb Front
Tp4000zc 232 Optoisolation
Tp4000zc 232 Pcb Front
Tp4000zc 232 Pcb Back
Tp4000zc Batt
Tp4000zc Contents
Tp4000zc Angle
Tp4000zc Pcb Back
Tp4000zc Front
Tp4000zc Chip Hef4013bt
Tp4000zc Open Front
Tp4000zc Open Front Noboard
Protocol¶
See Multimeter_ICs#Fortune_Semiconductor_FS9721_LP3.
User bit 2 is used to indicate temperature measurement in degrees Celsius.