UNI-T UT61C

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UNI-T UT61C
Uni-t ut61c mugshot.png
Status supported
Source code uni-t-dmm
Counts 6000
IEC 61010-1 CAT II (600V) / CAT III (300V)
Connectivity RS232 / USB
Measurements voltage, current, resistance, capacitance, frequency, duty cycle, diode, continuity, temperature
Features autorange, data hold, min/max, rel, bargraph, backlight
Website uni-trend.com

The UNI-T UT61C is a 6000 counts, CAT II (600V) / CAT III (300V) handheld digital multimeter with RS232 or USB connectivity.

See UNI-T UT61C/Info for more details (such as lsusb -v output) about the device.

Hardware

Multimeter:

RS232 cable:

See Device cables#UNI-T_UT-D02.

USB cable:

See Device cables#UNI-T_UT-D04.

Photos

Multimeter:

RS232 cable:

See Device cables#UNI-T_UT-D02.

USB cable:

See Device cables#UNI-T_UT-D04.

Usage

The DMM does not transmit samples after power up. You need to long-press the REL Δ button to activate the remote measurement. This also deactivates the auto power-off function of the device.

The following sigrok-cli command can be used to receive five measured values from a device connected via USB (note that the USB VID/PID after the conn option needs to be changed depending on the exact USB adapter cable used):

$ sigrok-cli --driver=uni-t-ut61c:conn=1a86.e008 -O analog --samples 5

If your meter has a serial (RS-232) cable connected to a USB-to-serial adapter, a different driver is used. Example for ttyUSB0:

$ sigrok-cli --driver=uni-t-ut61c-ser:conn=/dev/ttyUSB0 -O analog --samples 5

Same example for COM1 (Windows), please note the special syntax for specifying the COM port:

C:\> sigrok-cli --driver=uni-t-ut61c-ser:conn=\\.\COM1 -O analog --samples 5

--samples <n> stops acquisition after the specified number of measurements, while --continuous does not stop. Type just sigrok-cli by itself for a summary of options. More information on drivers can be found in the README.devices file of the libsigrok source tree.

Protocol

See Multimeter_ICs#Fortune_Semiconductor_FS9922-DMM4 for the DMM IC protocol. Depending on the cable, additional transport-specific decoding is needed, though.

Resources