UNI-T UT71x Status supported Source code Counts 0 IEC 61010-1 CAT III (1000V) / CAT IV (600V) Connectivity / Measurements voltage, resistance, diode, continuity, capacitance, frequency, duty cycle, current, temperature, power (only UT71E), loop current (not on UT71B) Features autorange, hold, peak hold, relative, min/max, bargraph, backlight, true-rms Website The UNI-T UT71x is a series of 0 counts, CAT III (1000V) / CAT IV (600V) handheld digital multimeters with RS232 or USB connectivity. Devices Device Conrad OEM Tenma OEM Counts Comments UNI-T UT71A 20000 UNI-T UT71B 0 UNI-T UT71D Voltcraft VC-960 (?) 40000 UNI-T UT71E 40000 The PCB markings for this series are not necessarily useful, most devices read 'UT71A' (even for devices which are not an UT71A). Win Xp Home Edition Ulcpc Download Youtube.

Digital Multimeters. The other one is also a Voltcraft, a VC-960. Icom programming Software GM-110SC rev.1.2.

However, there is usually a white sticker on some IC which correctly identifies the DMM ('B', 'E', '920', or the like). There's usually also a hand-drawn marking (e.g. 'B' or 'C') on the PCB itself. Protocol The devices use a simple 11-byte protocol over a USB-to-serial or USBHID-to-serial link (depending on the cable used). The communication parameters are 2400 baud, 7o1.

However, the vendor software opens the serial port with 8n1 settings, so the vendor protocol descriptions are slightly off. Also, the available vendor protocol descriptions from e.g. Conrad are partially incomplete or even erroneous in some places. Byte Description Comments 0 Digit 1 1 Digit 2 2 Digit 3 3 Digit 4 4 Digit 5 5 Range 6 Function 7 State 1 8 State 2 9 r (0x0d) 10 n (0x0a) The following information is not available/sent via the protocol (and is thus unavailable for sigrok purposes): • the REL, MIN, MAX, HOLD flags • the bargraph value • the backlight status • the low-battery indicator • the internal measurement value store (only available on some models) Resources • • Conrad protocol descriptions:.