TekPower TP4000ZC

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TekPower TP4000ZC
Tp4000zc front.png
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:

Photos

Multimeter:

Cable:

See Device_cables#Digitek_DT4000ZC_cable.

Protocol

See Multimeter_ICs#Fortune_Semiconductor_FS9721_LP3.

User bit 2 is used to indicate temperature measurement in degrees Celsius.

Resources