High speed up to 8GHz Real-time EMC and EMI
Diagnostic Tool On Your Lab-Bench

Very-Near-Field EMI/EMC Scanning Device

EMScanner is a self-contained very-near-field scanning device which connects to a spectrum analyzer or a desktop PC running a copy of EMScanner Software. The EMScanner system operates from 150 kHz to 8 GHz and delivers repeatable and reliable results that pinpoint the cause of design failure in seconds.

Why EMScanner?


With EMScanner design teams can personally test their designs without having to rely on another department, test engineer, or time-consuming off-site testing. After diagnosing even an intermittent problem, the engineer can implement a design change and retest, and the results provide concrete verification of the effectiveness (or not) of the design change.

EMScanner diagnostic capabilities allow design teams to reduce testing time by more than two orders of magnitude. Users have also documented fifty percent reductions in design cycle times. .

Ideal PCB projects for EMScanner are boards designed for high speed, high power, and/or high density/complexity. Any PCB that places a premium on board real-estate also qualifies as an excellent candidate.

The compact, flat scanner provides PCB design teams with an easy-to-use, cost effective, and proven tabletop solution. Emission, immunity, filtering, EMI shielding, broadband noise and Common Mode testing are some of the applications that the EMScanner system addresses in mere seconds.

Emscanner All

Product Features  


Spectral scan, spatial scan, peak-hold, continuous scanning, spectral and spatial comparison, scripting, limit lines and report generation.

Spatial Scan Time

Continuous real-time or sub-second single scan for entire scan area Dependent on spectrum analyzer performance.

Spectral Scan Time

45 seconds for L 10 cm x W 10 cm (L 4” x W 4”) PCB with a 100 MHz span and 100 kHz RBW. Scanning area, span and RBW are user selectable within spectrum analyzer specifications.

EMViewer Software

We recommend you use the EMViewer software for best results.  A Yearly subscription or a once off purchase is available. 

Supported Operating Systems

Windows 10/11®

Supported CAD Overlays

Standard Gerber© RS274x format and HPGL format

Product Specifications

EMS08 Base configuration 150 kHz to 8 GHz

1,218 (42 x 29) H-field probes Measurement sensitivity: Dependent on spectrum analyser performance

Dependent on spectrum analyzer performance

Probe spacing of 7.5 mm with an ‘effective’ resolution of 3.75 mm

L 31.6 cm x W 21.8 cm (L 12.44” x W 8.58”)

Peak marking accuracy of spectrum analyser

Calibrated before shipment. Firmware correction factors adjust for frequency dependent probe responses with +/- 3 dB accuracy

Anodized non-conductive metal

Glass Cover: 4kV DC; 2.6kV AC | Metal Case: 260V DC; 200V AC (measured as dielectric withstanding voltage – DWV)

From 15⁰ C to 40⁰ C (continuous spectral and spatial scans at 50 MHz)

6U Size C scanner fits into VXI and VME chassis

Spectrum analyser: RF SMA to type N coaxial cable | Adapter: Proprietary DB25

L 39.2 cm x W 24.4 cm x H 1.7 cm (L 15.43” x W 9.61” x H 0.67”)

2.80 Kg / 6.17 lb (including cables and the adapter)

Keysight Supported SA's


N9000A-CXA, N9000B-CXA, N9010A-EXA, N9010B-EXA, N9020B-MXA, N9020A-MXA, N9038A-MXE, N9912A-FieldFox, N9916A-FieldFox, N9918A-FieldFox, N9952A-FieldFox, E4440A-PSA, N9030A-PXA, N9040B-UXA
Rohde & Schwarz:


Scanner Users

Scanner Users

    Check out EMScanner Resources for more information.