Pulse Power and Measurement Ltd (PPM)

 PPM Test specialises in RF over Fiber systems for test and measurement applications. PPM Test is a division of Pulse Power and Measurement Ltd (PPM), with over 25 years’ experience designing and manufacturing RF over fibre optic links for EMC and harsh environment measurement testing. 

 Point2point and Sentinel 3 fibre optic shielded link systems from PPM Test are used to transport analogue/RF signals. 

Pulse Power and Measurement Ltd (PPM) was founded in 1994 as a distributor of pulse power systems, power electronics components and EMC test equipment.  PPM has been an accredited “Investors in People” organisation since 2004 and sees the training and development of its people as a key element to the success of its business model. In November 2016, PPM was very proud to receive the Gold accreditation of Investors in People.

Guaranteeing its quality processes, products and workmanship, PPM is certified to the latest ISO quality standard: ISO 9001:2015. The company has been certified to ISO 9001 since 2005.

1.  POINT2POINT Fiber Optic Links 

2.  Sentinel 3 Intelligent Links 

 Point2point links are fixed gain, analogue signal transmission systems – solving electrical interference and signal attenuation problems in signal monitoring and distribution. Depending on the frequency range, Point2point links use either intensity modulation or 14-bit digital modulation to convert analogue signals for transmission over fiber. 

• High performance analogue system
• Solves the problem of electrical interference
• High voltage isolation

•  G series – 40Hz to 250MHz
• K series – 2kHz to 1.35GHz
• P series – 1MHz to 2GHz
• S series – 10MHz to 3GHz

• Wide, flat frequency response
• Electrically shielded modules
• All modulation formats
• Wide dynamic range
• Flat bandpass response
• Single mode or multimode
• Up to 36 hours battery life

•  Immunity to electrical interference
• Very long path lengths
• Negligible degradation of signal-to-noise
• Safe transmission path for monitoring at hazardous voltages
• Immunity to electromagnetic fields
• Elimination of ground loops

Sentinel 3 is the world’s most advanced RF over fiber test and measurement system for:

• EMP test and EMC conformance
• HIRF aircraft clearance
• Simulated lightning testing
• Impulse, time domain and NEMP testing
• Low and high level swept frequency coupling measurements

Sentinel 3 is designed to reduce setup time and maximize measurement certainty.  The 3U chassis is available in desktop and rack-mount format. The chassis accepts up to six single or dual receiver modules. Power and control distribution takes place via the chassis backplane. The unit also integrates battery charging.

•  Three modes: super-low noise mode, high power mode and high impedance mode
• Increased sensitivity means lower test field strength and reduced ERP
• 145dB/Hz instantaneous dynamic range
• Thermal compensation means calibrate only once for 0.25dB accuracy

Single, dual and multi-link cross site cables simplify and minimize setup time and allow a single receiver to monitor up to 48 sensors (six transmitters, each with eight inputs) sequentially, or two sensors simultaneously (requires dual input receiver module).

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