ET300 · Virtual Instrumentation Base System

Virtual Instruments Interface with Experimenter Modules and Measurement Accessories

The measurement and instrumentation core of the Sangari ET modular training platform: a PC-controlled interface with a full suite of virtual instruments, two experimenter modules that host the plug-in experiment cards of the ET course family, and a complete measurement accessory set.

Capabilities

Central measurement interface with a complete suite of virtual instruments operated from the PC
2/4-channel virtual oscilloscope - 10 MHz bandwidth, 100 MS/s sampling
Virtual voltmeters and ammeters for DC and AC, TrueRMS
Spectrum analyzer, Bode plotter, function and arbitrary generators
Adjustable DC and three-phase supply, variable up to 150 Hz
16-bit digital I/O and 8 switching relays for fault-simulation exercises
Experimenter modules accept plug-in experiment cards for the whole ET course family
USB and WLAN connection to the PC; all experiments at safety extra-low voltage

Description

The ET300 is the base system of the Sangari ET modular training platform for electrical engineering. A central interface unit incorporates all inputs, outputs, switches, power supplies, signal sources and measurement circuitry, and is controlled entirely from the PC via USB or WLAN. Two experimenter modules couple to the interface over the internal system bus: each accepts a plug-in experiment card, provides a breadboard area for discrete components, and distributes the fixed and variable supply voltages on 2 mm laboratory sockets. A measurement accessory set - shunt resistor boards of 1, 10 and 100 Ω for current measurement, laboratory terminals and a colour-coded cable set - completes the workstation.

Scope of Delivery

Central interface unit with virtual instruments
2× Experimenter modules
Measurement accessory set - 6 shunt resistors (2× 1 / 10 / 100 Ω) on boards, 20+ laboratory terminals, connection cable set
External wide-range power supply
Power cable and USB cable
Basic software (incl. download) and user manual

Software Environment

The environment runs on Windows 10/11 and connects over USB or WLAN. It hosts the interactive multimedia courses of the ET series with guided experiments and self-assessment, integrates readings from external instruments such as the ET321 digital multimeter, controls the 8 fault-simulation relays, and exports all measured data - with full Romanian-language support.

Specifications

Processor 32-bit, internal measurement memory

PC connection USB 12 Mbit/s, WLAN 2.4 GHz IEEE 802.11 b/g/n

Analog inputs 4 differential, 10 MHz bandwidth, 100 V-proof, 100 MS/s, 9 ranges, memory 4×8k×10 bit

Current inputs 2, protected up to 5 A, 250 kS/s, 12-bit

Analog output ±10 V, 0.2 A, DC…5 MHz, sine/square/triangle/arbitrary

Power outputs 3× ±20 V, 1 A, DC…150 Hz - adjustable DC / three-phase supply up to 14 V_rms; fixed ±15 V, +5 V on the bus

Digital I/O 16-bit in + 16-bit out, TTL/CMOS, 0…100 kHz, input memory 16 bit × 2k

Relays 8, 24 VDC / 1 A, for circuit switching and fault simulation

Experimenter modules 2 included - card holder, breadboard area, 2 mm sockets, bus daisy-chaining

Unit / power 29.6 × 19 × 8.6 cm, 2.1 kg - external PSU 100…264 V → 24 VDC, 5 A

230V

Virtual Instrumentation Software

The ET300 has no physical knobs: every instrument exists as a virtual instrument on the PC screen, wired to the interface's real inputs and outputs. The windows below are the actual Sangari software.

Oscilloscope

The central measuring instrument: two channels extensible to four, sampled by the interface's differential inputs and displayed with full time-base, trigger and math control.

Channels / bandwidth 2/4 channels, 10 MHz, 100 MS/s

Time base 25 ranges, 100 ns…10 s/div; 9 voltage ranges 20 mV…10 V/div

Trigger source / edge / level, pre-trigger, XY and XT modes, math channel

Also in the suite spectrum analyzer 3 Hz…1 MHz; Bode plotter 1 Hz…5 MHz with locus diagram

Function generator

The signal source of every AC experiment - decade frequency selection with fine multiplier, six output functions and a precision attenuator for millivolt-level signals.

Frequency 0.5 Hz…5 MHz, decade + fine adjustment

Functions sine, triangle, rectangle, logic, DC± - up to 10 V

Attenuator 1:1 / 1:10 / 1:100

Dual voltmeter

Two voltage channels displayed simultaneously, with analog scale bars and overload indication.

Ranges 9 ranges, 100 mV…50 V, overload warning

Coupling DC and AC · TrueRMS

Pulse generator

Rectangular pulses with the width controlled independently of frequency - the source for duty-cycle, switching and digital-timing experiments.

Pulse width 5…95 % of the period

Modes unipolar (0…+A) / bipolar (−A…+A)

Frequency decades 0.1 Hz…100 kHz with fine adjustment

Dual ammeter

Two current channels measured through the interface's internal shunts - no external shunt wiring.

Ranges 300 mA / 3 A, inputs protected to 5 A

Coupling DC and AC · TrueRMS

3-fold DC supply

The three variable rails that power the experiment cards, each invertible for negative supplies.

Outputs 3× 0…±20 V, 1 A, individually set and inverted

Three-phase mode variable frequency 0…150 Hz, up to 14 V_rms