Keysight Technologies E8257D Service Manual

Also see for E8257D: Configuration guide Installation guide Startup guide Installation note Installation note

Contents

Keysight Technologies E8257D Service Manual Manual pdf 25 page image

E8257D/67D, E8663D PSG Signal Generators Service Guide 25TroubleshootingSelf–Test Failures and Related TroubleshootingSelf–Test Failures and Related TroubleshootingSelf–test results are valid only when all external cables and connectors areremoved from the PSG.Table 1-4 Self–test Failures and Related TroubleshootingIf this sel f–test fails... Go to this troubleshooting section...A13 I/Q Multiplexer “Self–Tests 1xx for the A13 I/Q Multiplexer” on page 55100 Power Supply101 CAL Source102 Ext In Offset DAC and Switch103 Path 1 & 2 and Ext Out104 Path 1: Attenuators and Summing Amp105 Path 2: Attenuators and Summing Amp106 DC–Couple Mode, CW bias DAC,Course+Fine DAC107 Drift Canceller108 IQ Polarity Switch109 RMS to DC Converter110 (not used)111 Wideband Path TestA5 Sampler “Self–Tests 2xx: A5 Sampler Self–Test Errors” on page 58200 Power Supply201 Tuning + Bias Test202 Coarse Loop Detector203 YO Loop DetectorA7 Reference (Std.) “Self–Tests 3xx: A7 Reference (Standard) Self–Test Errors (Forinstruments with serial prefixes < US4805/MY4805)” on page 60300 1 GHz Detector301 Tuning VoltageA8 Output “Self–Tests 4xx: A8 Output Self–Test Errors (E8267D only)” onpage 61400 Ground and PTAT Test401 Prelevel Loop Test402 Quadrature DAC Test403 VBLO Test404 Marble Test405 Gain Adjustment Test406 Prelevel Bypass Test407 Switched Filters Test408 (not used)409 ALC Modulation Test