Tel: +44 (0) 1904 324440


Comparison Noise Emitter V+


The image shown is of a CNEV+




  • Continuous broadband output
  • Stable output
  • 30 Hz to 6 GHz output
  • Compact and portable
  • Battery powered
  • Low cost

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CNE V+ Product Information

Test Instrumentation Range Brochure


The Comparison Noise Emitter V+ (CNE V+) is an enhanced version of the low-cost CNE V broadband noise source, providing an extended continuous output from 9 kHz to 3.5 GHz with a useable output to 5 GHz.

The highly stable output allows the CNE V+ to be used as a general-purpose reference source for characterising and verifying both conducted and radiated test environments.

The broadband nature of the output enables the observation of details within the spectrum that would be missed when using a comb generator, whilst the power output level of the unit avoids the overloads possible with impulsive noise sources that may cause damage to the sensitive input circuits of receiving equipment.

The CNE V+ is supplied with a 50 Ω BNC-type output connector for direct connection to conducted measurement systems. An IEC 320 adapter is also available to provide a connection to LISN equipment, as well as an RJ11/RJ14/RJ25/RJ45 adapter for connection to telecoms ISNs.

The CNE V+ can also be connected to an antenna, to generate reference fields for use with radiated emissions test environments such as Open Area Test Sites and anechoic chambers. A selection of antennas that connect directly to the CNE V+ for this purpose is available. The CNE V+ is compact and battery powered to allow operation as an electrically small source at lower frequencies, thereby minimising the effect of the CNE V+ structure when used as a radiating reference.


Continuous, broadband output•  Full spectrum measurements and analysis
Stable output•  Repeatable measurements
Conducted and radiated options•  Evaluation of both conducted and radiated systems
9 kHz to 3.5 GHz output•  Applications across a broad frequency spectrum
Compact and portable•  Comparisons between sites and environments
Battery powered•  No power or interconnecting cables affecting measurements
Low cost•  Affordable confidence in measurement system results


  • Conducted measurement systems validation and verification
  • Radiated measurement systems validation and verification
  • Reference source for:
    • Daily pre-test verification checks as required by Quality Managment Systems e.g. ISO 17025, DEF-STAN 59-411
    • Long-term performance monitoring
    • Spectrum analyser / receiver pre-checks
    • Cable position investigation
  • Investigation of screened room/anechoic room/OATS behaviour
  • Comparisons between different measurement environments e.g. OATS or anechoic chambers
  • Characterisation of filter performance
  • Cable loss measurements
  • Inter-laboratory test programs
  • Proficiency test programs


Frequency Range•  9 kHz to 3.5 GHz (usable to 5 GHz) into a 50 Ω system
 •  30 MHz to 3.5 GHz radiated using TLM01, TLM02 and MCN03 antennas
Output connector•  50 Ω N-type socket
Temperature stability•  9 kHz to 3.5 GHz, <±1 dB, at an ambient temperature of 15 °C to 30 °C
 •  9 kHz to 3.5 GHz, <±2 dB, at an ambient temperature of 5 °C to 40 °C
Time stability•  Typically <1 dB over a 12 month period
Dimensions•  120 mm × 120 mm x 41 mm (60 mm including connector)
Weight•  Approx 0.53 kg (including battery)
Power supply•  1 x 9 V battery (PP3 or equivalent). Alkaline or rechargeable NiMH
Operating Time•  3 hours typical with alkaline batteries
Indicators•  Power on, low battery

Standard Kits


Part Number


Parts included

CNEVKIT03Standard CNE V+ comparisonCNE V+ noise source 
 noise emitter kitTLM01 - 200 MHz to 1 GHz (optimum) 100 mm 
   long top-loaded monopole antenna 
CNEVKIT04Enhanced CNEV+ comparisonCNE V+ noise source 
 noise emitter kitTLM01 - 200 MHz to 1 GHz (optimum) 100 mm 
   long top-loaded monopole antenna 
  TLM02 - 30 MHz to 300 MHz (optimum) 270 mm 
   long top-loaded monopole antenna 
  MCN03 - 1 GHz to 3.5 GHz (optimum) 
   monocone antenna 
  LSA03 - LISN adapter with IEC 320 
   style connector 

All kits are supplied with:

Alkaline batteries, hard case, CAL01 – 9 kHz to 5 GHz CNE V+ output power measurement using a spectrum analyser or receiver, manual. 


TLM01200 MHz to 1 GHz (optimum) 100 mm top-loaded monopole antenna 
TLM0230 MHz to 300 MHz (optimum) 270 mm top-loaded monopole antenna 
MCN031GHz to 6 GHz (optimum) monocone antenna 
MON02Telescopic monocone antenna 
LSA03LISN adapter with IEC 320 style connector 
NIA01ISN adapter with RJ11/RJ14/RJ25/RJ45 style connection

Manufacturer's Calibrations

CAL01Conducted output power, 9 kHz  to 5 GHz
 measured using a spectrum analyser
CAL02   Radiated field strength, 30 MHz to 1 GHz
 measured at 3 m OR 10 m on an OATS using a spectrum analyser or receiver
CAL04Radiated field strength, 30 MHz to 1 GHz
 measured at 3 m AND 10 m on an OATS using a spectrum analyser or receiver
CAL06Radiated field strength, 30 MHz to 1 GHz 
 measured at 3 m in a FAR using a spectrum analyser or receiver

Typical Output Measurement Results

CNEV+ only graph 4 output power 4




A wholly owned subsidiary of the University of York, we have been successfully delivering EMC training courses, designing and selling test instrumentation for over 20 years.

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University of York
YO10 5DD

Tel: +44 (0) 1904 324440
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