Agilent/Keysight 11683A

The Keysight 11683A is a dedicated range calibrator for verifying accuracy and performance across compatible power meter instruments. It validates full-scale readings on all ranges, tests auto-zero circuits via polarity switching, and establishes baseline calibration through the meter's CAL ADJ control on the 1 mW range. The unit steps through additional ranges to confirm measurement accuracy within ±1 percent plus noise and drift.

Technical Specifications

Calibration Outputs The 11683A generates precise DC equivalents corresponding to specific power meter readings:

• 3, 10, 30, 100, 300 µW


• 1, 3, 10, 30, 100 mW Performance


• Calibration uncertainty: ±0.25% across all ranges


• Accuracy verification: ±1% plus noise and drift Electrical Requirements


• Input voltage: 100, 120, 220, or 240 Vac (±5% to -10%)


• Frequency: 48 to 440 Hz


• Power consumption: <10 VA DC-Reference Output (Option H01) Selectable internal or external programmable DC source. Example internal voltages (1 mW = 145.00 mVDC baseline):


• 100 mW: 15.800 V


• 30 mW: 4.7121 V


• 10 mW: 1.4641 V


• 3 mW: 458.00 mV


• 1 mW: 145.00 mV


• 300 µW: 45.837 mV


• 100 µW: 14.494 mV


• 30 µW: 4.5832 mV


• 10 µW: 1.4501 mV


• 3 µW: 458.69 µV Physical Dimensions


• Height: 88.9 mm (3.5 in)


• Width: 133.3 mm (5.25 in)


• Depth: 215.90 mm (8.5 in)


• Weight: 1.1 kg (2 lb 8 oz) nominal

Key Features

• Auto-zero circuit test via polarity switch


• Wide dynamic range verification from 3 µW to 100 mW


• Direct integration with power meter CAL ADJ controls


• Optional external DC programming capability

Environmental Specifications

• Operating temperature: 0 to +55 °C


• Storage temperature: -40 to +70 °C


• Humidity: up to 95% RH at 40 °C


• EMC: IEC61326-1:2012 / EN61326-1:2013

Compatibility & Integration The 11683A works with Agilent/Keysight EPM series, EPM-P series, and E1416A power meters.