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432A Analog Power Meter
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Replacement Product
N432A Thermistor Power Meter Frequency range: 100 kHz to 18 GHz (sensor dependent) Dynamic range: -30 to +10 dBm High Accuracy (≤ 0.1% ± 0.5 uW), excellent for 1 mW transfer calibration (with 478A-H75/H76) Built-in 6.5-digit ADC eliminates the need for an external DMM Selectable bridge resistance (100/200/300/400 Ω) Remote interface flexibility (GPIB, USB, LXI-C) Digital color LCD display The Keysight N432A is the replacement for Keysight’s legacy 432A analog thermistor power meter. This single-channel average RF power meter operates with the Keysight 8478B and 478A thermistor mounts, making it ideal for applications demanding high measurement accuracy, especially in metrology and calibration laboratories. The enhanced N432A features a digital color LCD and a user-friendly front panel interface. It's built-in calibration factor table offers a more convenient and precise method for storing calibration factors, replacing the manual knob-turning process of the 432A. The N432A is LXI compliant and fully programmable via GPIB, USB, and LAN interfaces.
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HIGHLIGHTS
- Power Range: 7 ranges with full-scale readings of 10, 30 100 and 300 uW 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)
- 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
- Thermistor Sensor: Thermistor sensors are required for operation of the 432A.
The 432A analog power meter will be discontinued on June 1, 2011. The replacement product will be the N432A Thermistor Power Meter
The Keysight 432A provides high accuracy over a wide temperature range. By measuring the output voltage of the thermistor bridges and computing the corresponding power, even higher accuracy of ±0.2 percent ±0.5 microW can be obtained. Accuracy can be maintained on even the most sensitive range because the error due to thermoelectric effect is reduced to a negligible level.
For more information about power meters and power sensors, please visit Keysight’s power meters and power sensors.
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