Why does Keysight currently ship Power Supplies with calibration certificates that are not dated?
The calibration date is dated on the Certificate of Calibration next to the signature of Electrical Inspector. The blank Calibration label (sticker) is stapled with the certificate of calibration.
There are no components used in Power Products which have a specific shelf life. Therefore, the calibration period of this instrument begins on the date that the product is first put into service by the customer. The recommended calibration interval for most Power Products is 12 months. Please check your User's Guide to verify the specific interval for your product. Once the product has been put into service, fill in the appropriate dates for recalibration on the calibration label (sticker).
All Keysight Power Products will meet their published specifications for 1 year after the customer puts the product into service.