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Keysight (Agilent) N432A High Accuracy Thermistor Power Meter

Keysight (Agilent) N432A High Accuracy Thermistor Power Meter

Description

As today’s power measurements become more complex, it is increasingly difficult to make reliable, accurate power measurements. For more
than 40 years, you’ve depended on Agilent’s 432A analog power meter, used with temperature compensated thermistor sensors to provide high
accuracy over a wide temperature range.

LXI Class-C compliant N432A
The N432A is a single-channel, average RF power measurement meter that supports thermistor sensors. The N432A has the capability to measure and display average power, RF bridge voltages (VRF0 and VRF1), compensation bridge voltages (VCOMP0 and VCOMP1), V0, and V1. It is also provided with a set of features such as zeroing and a built-in self-test.

Developed using LXI technology, the N432A is an LXI Class-C compliant instrument.1 The N432A basic configuration consists of two key
sections: bridge and meter logic. When a compatible thermistor sensor is connected to the N432A, the RF and compensation bridge circuits
are formed in the bridge section. VRF, which is the voltage at the top of the RF bridge, is responsive to both input RF power and ambient temperature

changes. On the other hand, VCOMP, which is the voltage at the top of the compensation bridge, is responsive only to ambient temperature changes. The VRF and VCOMP values are used in calculating the RF power. Meanwhile, the meter logic section processes VRF and VCOMP to produce a meter current proportional to RF power.

In general, the N432A is an easy‑to‑use instrument, especially with the availability of an integrated Web browser that provides a convenient
way to view and modify the instrument network configuration. Besides the LAN interface, the N432A also supports industry standard GPIB
and USB interfaces for measurement automation.

Today, the Agilent N432A digital thermistor power meter, loaded with enhancements, including a color digital display, and intuitive front
panel interface will continue support your measurement needs with greater capability and expanded functionality. Best of all, you can get these extras at just a fraction of the price of the legacy 432A.

Key features

  •  Frequency range: 100 kHz to 18 GHz (sensor dependent)
  •  Power range: –30 dBm (1 μW) to +10 dBm (10 mW)
  •  High accuracy ± (0.1% of reading + 0.5 μW), excellent for 1 mW transfer calibration (with 478A-H75)
  •  Built in 6.5 digit ADC eliminates the need of external DMM
  •  Selectable bridge resistance (100/200/300/400 Ω)
  •  Remote interface flexibility
  •  DC substitution measurement, traceable to the U.S. National Institute of Standards and Technology (NIST)

Dimensions : The following dimensions exclude front and rear protrusions:
212.6 mm W x 88.5 mm H x 348.3 mm D
(8.5 in x 3.5 in x 13.7 in)

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