Keysight U5532C Sensor Module User’s Guide 13InstallationInitial InspectionOperating PrecautionsThe input connector should be torqued to 12 in-lb (135 Ncm) for the type-Nconnector, 8 in-lb (90 Ncm) for the APC 3.5 mm connector, or 8 in-lb (90 Ncm)for the 2.4 mm connector to ensure a repeatable connection in order to meetthe published specifications. Exceeding these torque settings may damage theconnector.Connect the sensor module by turning only the hex nut portion of theconnector. Damage can occur if torque is applied to the sensor module body.The connector plastic insulator bead deteriorates when contacted by acetone,trichloroethylene, carbon tetrachloride, benzene, etc.For optimal results, the sensor module must be placed on a supportive surface with the serialnumber label facing up. This orientation provides repeatable measurements by eliminating strainon the input connector.BEFORE CONNECTING THE SENSOR MODULE TO OTHER INSTRUMENTS, ensure that allinstruments are connected to the protective (earth) ground. Any interruption of the protectiveearth grounding will cause a potential shock hazard that could result in personal injury andcause damage to the sensor module.