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1143A Probe Offset Control and Power Module

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Starting From US$ 1,855

Typical Configuration  

Typical Configuration

1143A Probe Offset Control and Power Module for 54701A

  • R-51B-001-Z Return to Keysight Warranty - 3 years


Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications

Notice for European Union Customers: This product is no longer available due to lack of compliance with EU RoHS directive 2011/65/EU. Please contact Keysight Authorized Distributors for quotation and ordering. Keysight will continue service and support to the end of worldwide support life.


The Keysight 1143A provides power and independent offset control for two Keysight 54700-series probes. The probe's offset can be controlled via a 9-pin, D-subminiature connector on the rear panel of the Keysight 1143A. Additionally, the ±50 V offset capability extends the dynamic range of the probe measurement system beyond that of many test and measurement instruments.

The Keysight 54701A, with the Keysight 1143A Probe Offset Control and Power Module, is versatile enough to be used with any test and measurement equipment with a 50 ohm input.


  • Keysight 1143A independently powers the Keysight 54701A
  • Programmable offset
  • ±50 V offset
  • Number of independently operated probes: 2
  • Positive power output: +17.3 V ±150 mV
  • Negative power output: -17.3 V ±150 mV
  • Maximum current capability (both +17.3 V and -17.3 V supply): 300 mA
  • Offset current: Variable from zero to ±5 mA
  • Operating temperature: 0 to 55°C
  • Operating humitity: 95% relative humidity at 40°C
  • Net Weight: 1.5 kg (3.4 lbs.)
  • Shipping Weight: 2.4 kg (5.4 lbs)
  • Power Requirements: 90 to 132/198 to 264 Vac, 47 to 440 Hz, 40 VA max
  • Dimensions: 211 mm (W) x 173 mm (D) x 78 mm (H) (8.3 x 6.8 x 3.1 inches)