Specifications

Switched LO Distribution Amplifier (SLODA) Adjustment (E4440A, E4443A, E4445A)
Agilent Technologies
PSA Series Spectrum Analyzers
Test and Adjustment Software
Switched LO Distribution Amplifier (SLODA)
Adjustment
(E4440A, E4443A, E4445A)
The Switched LO Distribution Amplifier (SLODA) requires six ALC bias voltages and
one gate bias. The voltages for each of these biases are printed on the SLODA label.
These voltages can be read with a DVM on the test connector on the Front End Driver,
A13J12. The computer sends commands to the PSA to set the appropriate latch and bias
DAC, and the DVM is used to verify that the proper bias voltages are present.
This adjustment should be performed after replacing the A21 or A13 assemblies.
Required Test Equipment
Test Equipment Model Number
Digital Voltmeter 3458A
E4440-60041 Bias Adjustment Board
DC Probe 11002A, 11003A
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