EMSCOPE-RX4 & RX4LZ2 EMI Receivers

EMSCOPE-RX4, 9kHz - 110MHz, 4 channel Receiver for 3 phase

Gallery EMSCOPE-RX4, 9kHz - 110MHz, 4 channel Receiver for 3 phase

EMSCOPE-RX4, 9kHz - 110MHz, 4 channel Receiver for 3 phase

Measure three-phase conducted emissions and investigate common/differential-mode noise with the four-channel EMSCOPE platform. Choose RX4 for external-LISN testing or RX4LZ2 for an added built-in 16 A single-phase LISN. Three-phase testing uses a suitable external network. Click meter and frequency upgrades are available.

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EMZER TECHNOLOGICAL SOLUTIONS, S.L.

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Data Sheet

Article on Filter Design

EMSCOPE Advantages

SPECIFICATIONS

EMZER | CONDUCTED EMISSIONS & EMC DIAGNOSTICS

EMSCOPE-RX4 / RX4LZ2 Four-Channel EMI Receivers

Four receiver channels. Clear single-phase and three-phase choices.

Choose RX4 or RX4LZ2

EMSCOPE-RX4	Four receiver channels and four transient limiters. No internal LISN. Select an external network for the EUT.
EMSCOPE-RX4LZ2	Four channels plus an internal dual-port 16 A single-phase LISN. The built-in network adds single-phase bench capability; it does not supply a three-phase EUT.

EMZER EMSCOPE-RX4 with four RF inputs and no internal LISN

RX4: N, L3, L2 and L1 RF inputs for an external network.

EMZER EMSCOPE-RX4LZ2 four-channel receiver with single-phase LISN

RX4LZ2 adds a single-phase LISN and EUT outlet. Use an external three-phase LISN for three-phase power-line testing.

Find the source of three-phase conducted EMI

Evaluate physical line signals and use common-mode plus three differential-mode results to investigate filter performance. Separate noise mechanisms before selecting filter components. Detector display and channel combinations depend on operating mode.

Frequency configuration: EMSCOPE-RX4 and EMSCOPE-RX4LZ2 start at 150 kHz as standard. Add UPGR-09 to extend coverage down to 9 kHz. The separate UPGR-110 option extends the upper limit from 30 MHz to 110 MHz.

Measurement setup

1. Connect the EUT	Use the internal single-phase LISN where fitted and suitable, or a correctly rated external network.
2. Connect the receiver	Connect measurement outputs to the appropriate RF inputs using suitable coaxial cables.
3. Select the measurement	Choose EMI or modal mode, span, detectors, bandwidth, dwell time and the applicable limit line.
4. Compare and document	Review traces, identify dominant noise modes and export results. Add the click meter license for discontinuous disturbance testing.

EMI and modal measurement views

EMZER modal conducted-emissions measurement display

Manufacturer example display. Compare noise modes to inform filter selection; illustrated traces are not performance guarantees.

Technical specifications

Receiver channels / transient limiters	4 / 4; both RX4 and RX4LZ2
Base frequency range	150 kHz–30 MHz standard
Low-frequency extension	Down to 9 kHz with optional UPGR-09
Upper-frequency upgrade	110 MHz available
Receiver standard	CISPR 16-1-1, as specified by EMZER
EMI detectors	Peak, quasi-peak and average
Measurement modes	Conducted EMI and modal analysis (common mode and differential mode)
Full-spectrum measurement time	Equal to selected dwell time; configurable from 1 s to 15 s
CISPR resolution bandwidths	200 Hz, 9 kHz and 120 kHz
MIL resolution bandwidths	1 kHz and 10 kHz
Integrated circuitry	Preamplifiers and transient/pulse limiters
Control and communication	Embedded web application; optical fiber with fiber/Ethernet converter
Software functions	EMI/modal measurements, waterfall/spectrogram, result comparison, preset settings and report export
Export formats	CSV, PDF and image, as supported by the measurement mode
Optional functions	Click meter; oscilloscope/time-domain analysis; model-specific frequency upgrades
Dimensions (W × H × D)	252 × 195 × 438 mm
Weight	5.5 kg for RX4 per webpage; RX4LZ2 weight to be confirmed

Integrated LISN specifications — RX4LZ2 only

LISN type / standard	Dual-port, single-phase V-network; CISPR 16-1-2
Equivalent circuit / pre-filter choke	50 Ω \|\| (50 μH + 5 Ω) / 250 μH
Maximum continuous current	Up to 16 A at 230 VAC; socket dependent
Maximum operating voltage	Up to 300 VAC / 325 VDC; socket dependent
EUT supply frequency	DC to 60 Hz
Artificial hand	510 Ω + 220 pF; 4 mm banana/socket connection
Mains input	IEC C20
EUT socket	Schuko Type F shown in manufacturer data. EU, USA, UK and CN-AUS selections are listed; specify the North American outlet and verify its ratings.

These limits apply to the fitted single-phase LISN and its socket. Confirm the outlet, EUT voltage and continuous current for the ordered configuration.

Watch emissions change over time

EMSCOPE waterfall spectrogram of conducted emissions over time

The included waterfall/spectrogram helps reveal emissions that change during an operating cycle.

Options and configuration

Option	Availability	Purpose
UPGR-110	Optional	Extends upper frequency limit from 30 MHz to 110 MHz.
UPGR-09	Optional on RX4/RX4LZ2	Extends the lower frequency limit from 150 kHz down to 9 kHz.
Click meter license	Optional on all models	CISPR 14-1 click meter for discontinuous disturbance testing.
UPGR-OSC	Optional	Time-domain / oscilloscope mode.
Fiber/USB converter	Optional	Optical-fiber connection to a USB-equipped host.
EUT socket selection	Specify when ordering	Applies to the internal single-phase LISN; verify outlet current/voltage limits.

Components and supporting equipment

Included with selected model	Four-channel receiver; four transient limiters; embedded EMI/modal software; optical-fiber communication and fiber/Ethernet converter. RX4LZ2 also includes the dual-port 16 A single-phase LISN.
Required for testing	Browser-equipped control device; suitable EUT supply, grounding, measurement cables and test network. Confirm supplied cable lengths and socket configuration with the quotation.
External LISN	Required for RX2/RX4 power-line testing and RX4LZ2 three-phase testing. Select voltage, current and impedance for the EUT and test method.
Separately licensed options	Click meter and oscilloscope functions; frequency upgrades as specified for the configuration.

Add a CISPR 14-1 click meter

An optional click meter license adds discontinuous disturbance testing. Evaluate line and neutral, view four measurement frequencies, review click statistics and generate PDF reports. Available for all four EMSCOPE models.

Explore the EMSCOPE click meter option

Practical questions

Does RX4LZ2 include a three-phase LISN?

No. Its internal LISN is single-phase. Three-phase testing requires a separately specified external network with suitable current, voltage and impedance ratings.

Is the click meter included?

No. It is an optional license for discontinuous disturbance testing. Normal EMI and modal software is included.

Do I need to install measurement software?

The application is embedded in the instrument and accessed in a browser. A browser-equipped device and suitable optical/network connection are still required.

Is 110 MHz standard?

The model table lists 30 MHz base coverage and UPGR-110 as an available upgrade. Specify the required coverage in the quotation.

Downloads and technical resources

Existing Absolute EMC datasheet
Power-line filter design article
EMSCOPE advantages
Current EMZER family technical sheet

Compare all four EMSCOPE models

Choose channel count and LISN arrangement first. All four models support the optional CISPR 14-1 click meter.

Model	Receiver channels	LISN configuration	Base frequency range	Best fit
EMSCOPE	2	Built-in single-phase, 16 A	9 kHz–30 MHz	Integrated single-phase bench testing.
EMSCOPE-RX2	2	External LISN required	9 kHz–30 MHz	Application-specific external networks.
EMSCOPE-RX4	4	External LISN required	150 kHz–30 MHz*	Three-phase EMI and modal troubleshooting.
EMSCOPE-RX4LZ2	4	Built-in single-phase, 16 A; external network for three-phase	150 kHz–30 MHz*	Single-phase bench work plus external three-phase setups.

Shared capabilities: peak, quasi-peak and average EMI detectors; common/differential-mode analysis; embedded browser software; fiber/Ethernet converter; available 110 MHz upgrade; optional oscilloscope and click meter licenses. Transient limiters: two on EMSCOPE/RX2 and four on RX4/RX4LZ2.

*RX4 frequency selection: EMSCOPE-RX4 and EMSCOPE-RX4LZ2 start at 150 kHz as standard. Add UPGR-09 to extend coverage down to 9 kHz. The separate UPGR-110 option extends the upper limit from 30 MHz to 110 MHz.

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