Agilent Technologies 8156A manual Using the Attenuator, Using the Modify Keys, Attenuator Keys

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Figure 1-1

Getting Started

Using the Attenuator

1.1 Using the Attenuator

Before using the instrument, you should make sure that it is properly warmed up. The instrument is properly warmed up when it has been switched on for a minimum of 45 minutes. Failure to do this can cause errors of up to 0.04dB in the attenuation.

Set the attenuation of the filter using ATT (attenuation factor), λ (wavelength), and CAL (calibration factor).

The Attenuator Keys

The attenuation factor and the calibration factor set the position of the filter. The calibration factor allows you to offset the value of the attenuation factor.

Att(dB) = Cal(dB) + Attenuationfilter(dB)

In addition, you can use DISP→ CAL to transfer the current attenuation factor to the calibration factor.

Using the Modify Keys

There are four modify keys on the front panel of the attenuator.

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