248 Keysig ht N9923-90001 User’s GuideSafety ConsiderationsFor the FieldFoxFor the FieldFoxNo operator serviceable parts inside except for the lithium-ionbattery. Refer servicing to qualified personnel. To prevent electricalshock do not remove covers.If this product is not used as specified, the protection provided bythe equipment could be impaired. This product must be used in anormal condition (in which all means for protection are intact) whenattached to the AC–DC adapter.The unit may be used only in the operating conditions and positionsspecified by the manufacturer.Do not install substitute parts or perform any unauthorizedmodification to the product. Return the product to KeysightTechnologies or a designated repair center for service to ensure thatsafety features are maintained.Applicable local or national safety regulations and rules for theprevention of accidents must be observed in all work performed.Ensure that the connections with information technology equipmentcomply with IEC950 I EN60950.Observe all ratings and markings of the instrument beforeconnecting the instrument.Maximum Input Voltages and Power:RF Output Connector: 50V DC, +23 dBm RFExt Trig/Ref Connector: 5.5 V DCRF Input: ±50 VDC, +23 dBm RFDC Input: 19VDC, 4ADCWhen performing a measurement, ensure that the right safety andperformance ratings of the instrument and accessories are used.Do not expose the circuit or operate the instrument without its coveror while power is being supplied.Do not operate the instrument in any environment at risk ofexplosion.The power cord and connectors shall be compatible with the connectorused in the premise electrical system. Failure to ensure adequate earthgrounding by not using the correct components may cause productdamage and serious injury.
