Hi Earl, I would disconnect the battery from the test. The test generally checks the hold-up time of the Bulk capacitor in the power supply. For example the power supply is rated 230VAC Voltage dip to 161vac -30% (should maintain power,due to transient duration 10mS criteria B) Voltage dip to 69vac -70% (power may shut down, I have seen some units stay on,due to transient duration 100mS, criteria C) Voltage dip to 11.5vac -95% (power better turn-off, due to transient duration of 5 seconds criteria C)if not I am going to test to Clause 2.1.10 of UL1950 (electric shock from stored charge on capacitors) Hope this helps
-----Original Message----- From: Morse, Earl [mailto:[email protected]] Sent: Tuesday, January 04, 2000 12:29 PM To: '[email protected]' Subject: EN61000-4-11 When testing a device like a notebook computer that incorporates a battery should the battery be removed for this test? If the battery is installed any event will have to exceed the life of the battery in order to affect the system performance. A built in UPS so to speak. Earl Morse Portable Division EMC Design Compaq Computer Corporation Phone: 281.927.3607 Pager: 713.717.0824 Fax: 281.927.3654 Email: [email protected] <mailto:[email protected]> Emissions Control Laboratory 10320 Rodgers Road, EC106 Houston, TX 77070 --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
