N432A Thermistor Power Meter
- ModelN432A
- AttributesPower Meter + Power Sensor
- Category KEYSIGHT > Power Meters & Power Sensors
- BrandKEYSIGHT
- DescriptionThe N432A thermistor power meter is an auto-balancing power meter used with temperature-compensated thermistor mounts. Offering higher performance and more powerful functions, it can replace the traditional 432A analog power meter.
Detailed Introduction Technical Documents
Features
Frequency Range: 100 kHz to 18 GHz (depending on the sensor)
Dynamic Range: -30 dBm to +10 dBm
High accuracy (≤ 0.1% ± 0.5 uW), ideal for 1 mW transfer calibration (when used with 478A-H75/H76)
Built-in 6.5-digit ADC, eliminates the need for an external digital multimeter
Selectable bridge resistance (100/200/300/400 Ω)
Flexible remote interface options (GPIB, USB, LXI-C)
Digital color LCD display
Keysight N432A replaces the legacy Keysight 432A analog thermistor power meter. It is a single-channel average RF power meter compatible with Keysight 8478B and 478A thermistor mounts. The combination of N432A and thermistor mount is ideal for applications that require high measurement accuracy, especially in metrology and calibration laboratory environments. This enhanced thermistor power meter features a digital color LCD display and a straightforward front panel interface. Compared to the legacy knob-controlled 432A, it has a built-in calibration factor table that stores calibration factors more conveniently and accurately. The N432A complies with the LXI standard and is programmable via GPIB, USB and LAN interfaces.

