Fitness Menu

accessible over HP-IB. To load correction arrays over HP-IB, the correction arrays must be created in the controlling program and then downloaded to the synthesizer. The corresponding SCPI array creation and control commands are given after the description of this feature.

The HP 8360 Series Synthesized Sweepers provide extremely flat power to a test port, for testing power sensitive devices such as amplifiers, mixers, diodes or detectors. The user flatness correction feature of the synthesizer compensates for attenuation and power variations created by components between the source and the test device.

User flatness correction allows the digital correction of up to 801 frequency points (1601 points via HP-IB), in any frequency or sweep mode (i.e. start/stop, CW, power sweep etc.). Using a power meter to calibrate the measurement system as shown in Figure F-l, a table of power level corrections is created for the frequencies where power level variations or losses occur (see Figure F-2). These frequencies may be sequential linear steps or arbitrarily spaced. To allow for the correction of multiple test setups or frequency ranges, you may save as many as eight different measurement setups (including correction tables) in the internal storage registers of the synthesizer.

II

HP-IB

INPUT

PORT

I AND OTHER I

1 MlNEsS

I colaw3Eo

1 OUTPUT PORT

IN

HP $378

POUER IlETER

POUER SENSOR

- - - - - - - - ----B-B

OEVICE

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Figure F-l. Basic User Flatness Configuration Using an HP 4378 Power Meter
F-6 Operating and Programming Reference

HP 8360

 

User’s Handbook