Agilent Technologies E1401-90493

Chapter 2 101

Performance Verification Tests

13. Input Attenuation Switching Uncertainty

Figure 2-13 Input Attenuator Switching Uncertainty Test Setup

CAUTION Use only 75 Ω cables, connectors, or adapters on instruments with 75 Ω

connectors, or the connectors will be damaged.

Procedure

Calculate Actual Attenuation Values

1. From the calibration data supplied with the 1 dB step attenuator,

enter into Column 2 of Table 2-18 the actual attenuation for the

corresponding nominal attenuation settings. If the calibration data

does not indicate an actual attenuation value for the 0 dB setting,

enter 0 dB.

NOTE The Agilent 8494G programmable attenuator has four attenuator

sections consisting of 1 dB, 2 dB, 4 dB, and 4 dB attenuators. If using

the Agilent 8494G programmable attenuator, enter the calibration data

for the section three 4 dB step rather than the section four 4 dB step.

2. From the calibration data supplied with the 10 dB step attenuator,

enter into Column 4 of Table 2-18 the actual attenuation for the

corresponding nominal attenuation settings. If the calibration data

does not indicate an actual attenuation value for the 0 dB setting,

enter 0 dB.

NOTE The Agilent 8496G programmable attenuator has four attenuator

sections consisting of 10 dB, 20 dB, 40 dB, and 40 dB attenuators. If