UNI-T UT61D
Revision as of 16:19, 15 December 2012 by Uwe Hermann (talk | contribs)
 | |
| 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 |
| Features | autorange, true-rms, data hold, min/max, rel, bargraph, backlight |
| Website | uni-trend.com |
The UNI-T UT61D is a 6000 counts, CAT II (600V) / CAT III (300V) handheld digital multimeter with RS232 or USB connectivity.
See UNI-T UT61D/Info for more details (such as lsusb -vvv output) about the device.
Hardware
Multimeter:
- Multimeter IC: Fortune Semiconductor FS9922-DMM4 (datasheet)
- Low-power True RMS-to-DC converter: Analog Devices AD737 (datasheet)
- Crystal: 4MHz
- Fuses: 10A/240V and 1A/240V (HRV fuses)
RS232 cable:
See Device cables#UNI-T_UT-D02.
USB cable:
See Device cables#UNI-T_UT-D04.
Photos
Multimeter:
LCD
RS232 cable:
See Device cables#UNI-T_UT-D02.
USB cable:
See Device cables#UNI-T_UT-D04.
Protocol
See Multimeter_ICs#Fortune_Semiconductor_FS9922-DMM4 for the DMM IC protocol.
Depending on the cable, additional decoding is needed, though.
TODO: Serial cable vs. the two USB HID based cables.