Agilent/HP 432A Power Meter
with 478A Thermister and Cable

Tested and Working

  • Power Range: 7 ranges with full-scale readings of 10, 30 100 and 300 \'b5W 1, 3 and 10 mW; 
  • also calibrated in dBm from -20 dBm to +10 dBm full scale in 5 dB steps
  • Noise: Less than 0.25% of full scale peak (typical)\par Response Time: 
  • At recorder output, 35 ms time constant (typical)
  • Fine Zero: Automatic, operated by front-panel switch
  • Zero Carryover: Less than 0.50% of full scale when zeroed on most sensitive range
  • Meter: Taut-band suspension, individually calibrated, mirror-backed scales.
  •  Milliwatt scale more than 100 mm (4.25 in) long
  • Calibration Factor Control: 13-position switch normalizes meter reading to account 
  • for thermistor sensor calibration factor. Range 100% to 88% in 1% steps
  • Power Consumption: 115 to 230 Vac \'b1 10%, 50 to 400 Hz, 1.5 watts
  • No thermoelectric error for high accuracy over a wide dynamic range

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