PicoScope 4444, 4-Channel- Differential Oscilloscope Kit for Mains Voltage and Current Measurements
The PicoScope 4444 1000 V CAT III kit is a high-resolution differential oscilloscope with three PicoConnect 442 25:1 passive differential voltage probes and three TA368 2000 A AC Rogowski current probes both rated for 1000 V CAT III measurements. It also includes one TA271 single-ended D9-BNC adaptor. The PicoScope 4444 uses specially designed passive voltage probes that have smaller and lighter interface boxes allow it to make multiple differential measurements at the same time while taking power from the Pico D9 intelligent probe interface. The Pico D9 interface automatically configures the PicoScope display to the correct probe range.
The 12-bit resolution of the PicoScope 4444 offers greater vertical detail and its deeper capture memory of 256 MS gives it greater horizontal resolution. It is used in non-ground-referenced measurements, safe probing of single phase and 3-phase voltages and currents, measuring power drawn by mobile and IoT devices, hybrid and electric vehicle design, motor drives and inverters. The TA271 D9-BNC adaptor lets you use traditional differential voltage probes and current probes, and make single-ended measurements with a ground-referenced probe.
Why make differential measurements? While you can make a wide variety of measurements with an ordinary ground-referenced scope, there are some circumstances where that just won't work.
Scientists and electronics engineers frequently need to make
low-voltage measurements in the presence of high common-mode noise or varying offset voltages. Ground-referenced oscilloscopes require use of two input channels and an A minus B math function to observe the differential signal of interest. But, as well as this requiring two input channels, most scopes don't have a high enough common-mode rejection ratio (CMRR), nor the resolution to make measurements with sufficient precision.
Engineers working on
polyphase power distribution systems need to measure phase-to-phase AC voltages, rather than phase to ground. A ground-referenced scope can't be used as it will cause a short circuit. External differential probes are a solution but they are quite expensive and cumbersome, with each probe requiring its own power supply. The PicoScope 4444 has differential inputs and a choice of 1:1 low-voltage and 25:1 1000V CAT III probes to address both of these problems.
Technical data:For the technical data and more details about differential measurements and the various features of the supplied PicoScope 6 software please download the
PicoScope 4444 data sheet (11MB)
The PicoScope 4444 1000V CAT III Kit contains the following components:
- 1 x PicoScope 4444, differential oscilloscope
- 3 x PicoConnect 442, differential 25:1 probes with each 2 shrouded leads and sprung hook probes, max. 1000V CAT III
- 3 x TA368, Flex current probes, 1-phased, 2000A AC with D9 connector
- 1 x TA271, D9-BNC adaptor
- 3 x TA308, test lead, 0.5m, black, with 2 shrouded banana plugs
- 3 x TA309, test lead, 0.5m, red, with 2 shrouded banana plugs
- 3 x TA089, sprung hook probe, shrouded, black
- 3 x TA090, sprung hook probe, shrouded, red
- 1 x MI106, USB cable, 1,8m
- 1 x PS011, universal power supply, 5V
- 1 x PA149, carry case
This 1000V CAT III Kit is assembled for differential mains voltage measurements. For the case you also need to measure low voltge levels or AC/DC currents there are further accessories available which need to be ordered separately.
If you exclusively want to measure low voltage levels, you better order the PicoScope 4444, Standard Kit.
Optional accessories:
PicoConnect 441, differential 1:1 probe
TA300, current probe, 40A AC/DC, D9 connector
TA301, current probe, 200/2000A AC/DC, D9 connector
TA325, Flex current probe, 3-phase, 30/300/3000A AC, BNC connector
TA299, D9- dual BNC adaptor
