Comparison Noise Emitter VI
The Comparison Noise Emitter VI (CNE VI) is the latest generation broadband noise source, capable of providing a continuous output from 30 Hz to 6 GHz. The stable output allows the CNE VI to be used as a general-purpose reference source for characterising and verifying both conducted and radiated test environments.
The CNE VI is a broadband noise source that is capable of producing a continuous noise output within the 30 Hz to 6 GHz frequency range. The broadband nature of the output enables the observation of details within the spectrum that would be missed using a comb generator.
The CNE VI features two separate outputs; a 50 Ω BNC connector for the 30 Hz to 30 MHz signal and a 50 Ω N-type output connector for the 30 MHz to 6 GHz signal. For radiated operation, either output can be attached to a selection of antennas available in a range of frequency coverage and types. 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 VI is an ideal source for carrying out checks on Open Area Test Sites (OATS) and fully- or semi-anechoic chambers. The CNE VI is compact and battery powered, allowing operation as an electrically small source, which minimises the effect of the CNE VI itself when characterising the electromagnetic environment. The CNE VI is housed in a metal enclosure so that it can be mounted in direct contact with a metal ground plane as may be required by some tests.
Key Features
- Continuous broadband output
- Stable output
- 30 Hz to 6 GHz output
- Compact and portable
- Battery powered
- Low cost
Features/Applications
Features
- Continuous, broadband output; full spectrum measurements and analysis
- Stable output; repeatable measurements
- Conducted and radiated options; evaluation of both conducted and radiated systems
- 30 Hz to 6 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
Applications
- Validation and verification of radiated and conducted measurement systems, such as
- Open Area Test Sites (OATS)
- Fully Anechoic Rooms (FAR)
- Semi-Anechoic Chambers (SAC)
- Gigahertz Transverse ElectroMagnetic (GTEM) cells
- Line Impedance Stabilisation Network (LISN)
- Impedance Stabilisation Network (ISN)
- Reference source for
- Daily pre-test verification checks as required by the accreditation authorities e.g. ISO 17025, DEFSTAN 59-411
- Long-term performance monitoring
- Cable position investigation
- Investigation of screened room behaviour
- Characterisation of filter performance
- Cable loss measurements
- Measuring amplifier gain and bandwidth
- Spectrum analyser / receiver pre-check
- Investigation, characterisation and comparison of different measurement environments such as OATS, FAR or SAC
- Inter-laboratory test programs
- Proficiency test programs
Specifications
Noise Mode 1
Frequency Range
- 30 Hz to 30 MHz direct connection into 50 Ω system
- Up to 30 MHz radiated using a 1 m monopole
- Up to 30 MHz radiated using loop antennas
Output connector
- 50 Ω BNC-type socket
Temperature stability
- <+/-0.5 dB between 30 Hz to 30 MHz, from 5 °C to 40 °C
Time Stability
- Typically <1 dB over a 12 month period
Operating Time
- 14 hours typical with alkaline cells
Noise Mode 2
Frequency Range
- 30 MHz to 6 GHz direct connection into 50 Ω system
- 30 MHz to 6 GHz radiated using MON03 monopole and MCN03 monocone antennas
Output connector
- 50 Ω BNC-type socket
Temperature stability
- <+/-1 dB between 30 MHz to 6 GHz, from 15 °C to 30 °C
- <+/-1.5 dB between 30 MHz to 6 GHz, from 5 °C to 40 °C
Time Stability
- Typically <1 dB over a 12 month period
Operating Time
- 6.5 hours typical with alkaline cells
Other
Dimensions
- 120 mm x 120 mm x 60 mm
- 140 mm x 140 mm x 79 mm including connectors, switches
Weight
- 1 kg (including cells)
Power Supply
- 4 x 1.5 V cells (AA or equivalent). Alkaline or rechargeable NiMH
Indicators
- Active
- Low battery
Controls
- Rotary switch for mode selection including OFF
Kits
Standard Order Kits
CNEVIKIT01 – Standard CNE VI comparison noise emitter kit
Parts included
- CNE VI noise source
- MON03 – 200 MHz to 1 GHz (optimum) 270 mm long monopole antenna
- LSA03 – LISN adapter with IEC 320 style connector
CNEVIKIT02 – Enhanced CNE VI comparison noise emitter kit
Parts included
- CNE VI noise source
- MON03 – 200 MHz to 1 GHz (optimum) 270 mm long monopole antenna
- LSA03 – LISN adapter with IEC 320 style connector
- TLM02 – 30 MHz to 300 MHz (optimum) 270 mm long top-loaded monopole antenna
- MCN03 – 1 GHz to 6 GHz (optimum) monocone antenna
All kits supplied with
- Alkaline batteries
- Hard case
- Manual
- CAL20 – 0 GHz to 6 GHz output power measurements in all modes using a spectrum analyser or receiver
Accessories
TLM01 – 200 MHz to 1 GHz (optimum) 100 mm top-loaded monopole antenna
TLM02 – 30 MHz to 300 MHz (optimum) 270 mm top-loaded monopole antenna
MCN03 – 1 GHz to 6 GHz (optimum) 120 mm diameter monocone antenna
MON02 – Telescopic rod antenna
MON03 – 200 MHz to 1 GHz (optimum) 270 mm long monopole antenna
LSA03 – LISN adapter with IEC 320 style connector
NIA01 – ISN adapter with RJ11/RJ14/RJ25/RJ45 style connection
Manufacturer’s Calibrations supplied with the kit
CAL20 Conducted output power
- 30 Hz to 6 GHz, measured using a spectrum analyser
Typical Output Measurement Graphs
