Agilent Technologies PN 8510-16 Uživatelská příručka

Agilent PN 8510-16Controlling Test Port Output Power FlatnessProduct NoteUNCORRECTED POWERCORRECTED POWEROUTPUT POWERAgilent 8510C Network Analyzer

10Practical Application ExamplesAbsolute output power measurements with flatness correctionOne benefit of the flatness-correction capability isthe abi

11Amplifier measurement exampleStep-by-step instructions for setting up and apply-ing flatness corrections for the measurement of an amplifier are sho

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2IntroductionDesigners and manufacturers of active devicesoften need to control the power level at the testport1of their power-sensitive devices, but

3System ConfigurationThe basic 8510C measurement system configura-tion needed for test port flatness correction isshown in Figure 1. A single channel

4Flatness-Correction OperationThe basic setup procedure to obtain flat test portoutput power is illustrated in Table 1. To simplifythe execution of th

5Table 1. Flatness-correction calibration procedure8510C Keystrokes DescriptionSet up the power meter (see Table 2)For proper operation, the E4418B mu

6Table 2. Agilent E4418B power meter setupE4418B Keystrokes DescriptionPreset and zero the power meter [PRESET/LOCAL] Return the power meter to a k

7The following error messages may occur whileattempting to enable the flatness correction and/orreducing the test port power level:• If flatness corre

8Verifying a flatness-correction calibrationTo verify the flatness-correction calibration, thepower sensor should be reconnected to the testport to me

9Using test port 1 calibrations on test port 2In most cases, port 1 will be the input port of theDUT. When port 2 must be used as the input portto the