Tektronix 494AP service manual O o o o o O o a, Instrument Manual, Performance Checkprocedure

Models: 494AP 494A

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INSTRUMENT MANUAL

49UPSeruice1070,3783-01

492P/6Service107a-4232-O0

4941PServicet070-4416-00

4951PServicel070-5084-00

496/PServiceI070-3481-00

492NAPService1070-5565-01

492BBPService1070-5565-01

494NAPService1070-5560-00

2753PService1070-6306-00

27541PServicei070-6097-00

27551PServicet070-6032-01

2755NAPServicel070-6032-01

2756PService1070-6318-00

PERFORMANCE

CHECKPROCEDURE

NOTE

Ih".n performing accuracycheckat 10dB/Dlvmodeon someinstrumentoptions,the last.t0 lhe

DisplayDynamicRangemaynot appearto meetspecificationwhenthe 10KHzdB stepof ResolutionBandwithFilteris used'Thisis observedas. noiseinierreringwiththesignalwhenthe ExternalAttenuatoris setto g0 dB. The

signalwillappeartoo high,andnoisecan6e seenon eitherside. lf thisis thecase,thenchangethesparvDiv to 10kHz'the resoulutionBandwidthFilterto 1 kHz,andthe video Fitterto wlDE. Thenresetthe External Atlenuatorlo 0 dB,readiustthesignalGeneratoroutpulto FULLscFEEN andretestthe 10dB/Dlvmode.

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Page 321
Image 321
Tektronix 494AP service manual O o o o o O o a, Instrument Manual, Performance Checkprocedure