Keysight 478A/H75 Coaxial Thermistor Mount

• 478A-H75, 1 MHz to 1 GHz, max SWR 1.3 except 1.05 at 50 MHz
• High accuracy even in routine power measurements
• Temperature compensated for low drift
• Measures microwave power as low as one microwatt
• Shows calibration factor and effective efficiency at 12 frequencies

Keysight 478A provides high efficiency and good radio frequency (RF) match. Used in conjunction with the N432A or 432A power meters, they provide high accuracy even in routine power measurements. These thermistor mounts are temperature compensated for low drift, even in the presence of thermal shocks, permitting measurement of microwave power as low as one microwatt. Each mount contains data showing calibration factor and effective efficiency at six frequencies, directly traceable to the U.S. National Institute Standards and Technology (NIST) at those frequencies where NIST provides calibration service.

42842C Bias Current Test Fixture (Obsolete)

Specs:

• DUT Connection: 2-Terminal
• Bias Voltage Output connector: BNC(f)
• Dimensions (approx.): 213(W) x 173(H) x 235(D) [mm]
• Weight (approx.): 3100g

This test fixture is designed for use with the 42841A. It is connected directly to the bias current output terminals of the 42841A. The following features ensure accurate and safe DC bias measurements:

• Clear plastic cover is for safe measurements
• Opening the cover decreases the voltage generated by back-e.m.f. (electromotive force) to a level below 40 V within 0.1 second
• Heat-sensitive switch prevents DUT from overheating
• Also equipped with DC bias voltage monitoring
• Operating Temperature: 0C to 45C
• DUT Size: Smaller than 60(W) x 50(H) x 60(D) [mm]