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The details below are used for categorising products and do not necessarily reflect absolute values.

8000 Series

8071

The 8071 is a high precision 7.5 digit digital multimeter.

DC Voltage

• 5 ranges
• 100nV to 1050V
• 7.5 to 4.5 digit resolution
• Maximum sensitivity 100nV
• Reading rate 0.1s to 3s
• 2ppm 24 hour stability
• 9ppm / year voltage

AC Voltage

• 5 ranges
• 1uV to 1000V
• 5.5 to 4.5 digit resolution
• 10Hz to 10MHz bandwidth
• Reading rate 0.1s to 3s
• Analogue RMS converter
• 500ppm best accuracy

DC Current

• 6 ranges
• 100pA to 10A
• 6.5 to 4.5 digit resolution
• Maximum sensitivity 100pA
• Reading rate 0.1s to 3s
• 14ppm 24 hour sensitivity
• 25ppm / year accuracy

AC Current

• 7 ranges
• 10uA to 10A
• 5.5 to 4.5 digit resolution
• Reading rate 0.1s to 3s
• 10Hz to 10kHz bandwidth
• 300ppm 24 hour stability
• 800ppm / year accuracy

DC Resistance

• 7 ranges
• 10uOhm to 10MOhm
• 7.5 to 4.5 digit resolution
• 2-wire & 4-wire Ohms
• Offset compensation
• Reading rate 0.1s to 3s
• 2.3ppm 24 hour stability
• 20ppm / year accuracy

The 8000 series Digital Multimeter provides outstanding accuracy and linearity measurement performance together with ease of use.

The heart of any precision instrument is in its analogue design; the experience and knowledge gained by Transmille over 10 years in the development of its 3000 series precision multi-product calibrators, its innovation and commitment to quality have all been directed towards the design of the 8000 series multimeter.

The choice of components is critical in the design, the 8000 series using precision foil resistors, with temperature coefficients less than 1ppm°C and the latest in analogue chopper stabilised op-amps and low leakage switches.

A temperature stabilised zener reference chip provides 1ppm stability/year. PCB design at this level is critical, and every effect from thermal EMF,s to leakage must be eliminated if 8.5 digit performance is to be achieved. To give stable readings in noisy environments the 8000 Series measurement cycle is phase-locked to the mains (line) power.

To complement the analogue design the 8000 series multimeter digital design is also state of the art. The 8000 series is a multi- processor design, making full use of today's low cost digital processing power. Low-level processors handle the measurement ranging and A to D control etc, while a single chip 64 bit high performance processor handles data management. Circuitry which would have taken up complete circuit boards just a few years ago is now available on a single chip, improving reliability, reducing power and also cost, whilst at the same time improving performance.

By bringing together the latest technology in both analogue and digital design Transmille have significantly reduced the parts count and the complexity of an 8.5 digit multimeter, achieving unrivaled performance at a breakthrough price.

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