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ac Resistance
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In the
GenRad
Tradition...
In the GenRad Tradition
The World Leader in Metrology since 1915


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the USA

ohmSOURCE • OS-250 • OS-260 • OS-270 Decade Boxes


Decade Boxes ohmSOURCE Series Microprocessor Controlled Resistance Decade Boxes

Your SOURCE of Resistance!

The revolutionary ohmSOURCE Microprocessor Controlled Resistance Decade Boxes are like nothing you have ever seen before!

Microprocessor-controlled and loaded with innovative features, the ohmSOURCE Programmable Resistance Decade Boxes succeeds in providing highly accurate and precise resistance values in an intuitive and user-friendly fashion. With a resistance value range of up to 2.4 MΩ and a power rating of up to 1 Watt, the handheld ohmSOURCE decade boxes are practical for all industries including automotive, medical, test and measurement, telecommunications, and HVAC.

Software Development Kit now Free to download:

Data sheet and specs for ohmSOURCE decade boxes (.PDF Format)
Translation table manual for ohmSOURCE decade boxes (.PDF Format)
User and Service Manual for ohmSOURCE decade boxes (.PDF Format)

OS Software Development Kit (zipped files)

FEATURES AND BENEFITS

Keypad Interface

  • Enter resistance values using a calculator-style keypad.
  • Quick Value Keys
  • Recall up to four frequently used resistance values with one touch.
  • Memory Keys
  • Store resistance values in up to 10 additional memory locations (0-9).

Translation Tables (Optional RS-232 interface connection required)

  • Up to 4 numeric tables allow conversion from your units to a resistance value
  • Each table holds up to 255 entries; each entry contains your value and an associated resistance value
  • Your entries represent any type of curve; RTD, thermistor, thermocouple, strain gauge

Current Limiter

  • Limits the amount of current passing through the ohmSOURCE decade boxes to prevent possible damage.
  • Conveniently 100% mechanically isolate the ohmSOURCE from the application with the touch of a key.

Increment Value Setting

  • Change resistance by user-defined increments or select standard resistance values (1%, 5%, 10%)
  • Open Key

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