Figure 1-3 Mechanical Adapter (8483A Only); Table 1-2 11708A 30 Db Attenuator Characteristics - Keysight Technologies 8481A Operating And Service Manual

from the data on the sensor label, should be used for any power measurements in
a 75 ohm system at 50 MHz.
Remove the mechanical adapter from the power sensor before connecting
CAUTION
the sensor to a 75 ohm source.
Figure 1-3
D-model 8480 series sensors (8481D, 8485D, 8485D-033 and 8487D)
D-model sensors are supplied with a 11708A 30 dB attenuator. To calibrate a
D-model sensor, the 1 mW 50 MHz Power Reference supplied by the power meter
must be reduced to 1µW. The reference attenuator provides the means to do this.
Table 1-2 11708A 30 dB attenuator characteristics
Characteristic Limits
11708A accuracy at
30 ± 0.05 dB
50 MHz, 25 °C
Dimensions Length: 60 mm (2.4 in) Diameter: 20 mm (0.8 in)
Keysight 8480 Series Operating and Service Manual
Mechanical adapter (8483A Only)
Comments
Accuracy traceable to National Institute of
Standards and Technology (NIST), with a
temperature coefficient typically 0.003 dB per °C.
Introduction 1
19