Getting Started 1Keysight U2722A/U2723A User’s Guide 25Inspection and MaintenanceInitial inspectionWhen you receive your U2722A/U2723A, inspect the unit for any obvious damagesuch as broken terminals or cracks, dents, and scratches on the casing that mayoccur during shipment. If any damage is found, notify the nearest Keysight SalesOffice immediately. The front of this manual contains the warranty information.Keep the original packaging in case the U2722A/U2723A has to be returned toKeysight in the future. If you return the U2722A/U2723A for service, attach a tagidentifying the owner and model number. Also include a brief description of theproblem.Electrical checkThe U2722A/U2723A USB Modular Source Measure Units Service Guide willprovide the complete verification procedure. The procedure will verify to a highlevel of confidence that the U2722A/U2723A is operating according to itsspecifications.VentilationThe U2722A/U2723A can operate within the temperature range of 0°C to 50°C.A fan cools the U2722A/U2723A by drawing and exhausting air through the sides(and rear[1]).Your U2722A/U2723A must be installed in a location that allows sufficient spaceat the sides (and rear [1] ) of the U2722A/U2723A for adequate air circulation.For the use of your U2722A/U2723A in the U2781A instrument chassis, it comeswith two cooling fans that help to improve the air circulation.[1] The U2723A USB Modular Source Measure Unit comes with two cooling fans, one located at theside, the other located at the rear.