Keysight Technologies 85309B LO/IF, Руководство пользователя и сервисное руководство

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2-16 Keysight 85309B User’s and Service Guide
Operating Information
Performing the Operator’s Check
2-
Performing the Operator’s Check
Function
The Operator’s Check verifies that the 85309B functions properly before
permanent installation in the antenna test system. It may also be used as a
stand-alone check anytime that a problem is suspected with the 85309B.
Description
The Operator’s Check drives an LO power signal into the rear panel LO INPUT
(J1) port and measures the power output response of the LO channels
(reference and test) across the entire frequency range of operation. It also
checks the Reference IF and Test IF channels. Passing the Operator’s Check
indicates that all 85309B internal cables have stable connections and that the
amplifiers are working properly.
The Operator’s Check consists of the following tests:
—
“LO Power Output Test” on page 17
—
“Reference IF and Test IF” on page 22