204  FieldFox User’s Guide  
Safety Considerations  
Agilent has designed and tested the FieldFox in accordance with IEC Publication 
61010–1:2001 Safety Requirements for Electrical Equipment for Measurement, 
Control and Laboratory Use, and the FieldFox  is supplied in a safe condition. 
The FieldFox is also designed for use in Installation Category II and pollution 
Degree 2 per IEC 61010 and IEC 60664 respectively. Read the following safety 
notices carefully before you start to use this FieldFox to ensure safe operation 
and to maintain the product in a safe condition.  
For the FieldFox 
No operator serviceable parts inside except for the lithium–ion battery. Refer 
servicing to qualified personnel. To prevent electrical shock do not remove covers.  
If this product is not used as specified, the protection provided by the equipment could 
be impaired. This product must be used in a normal condition (in which all means for 
protection are intact) when attached to the AC–DC adapter. 
The unit may be used only in the operating conditions and positions specified by the 
manufacturer. The Agilent N9912 Handheld Cable and Antenna Tester complies with 
the following standards 
      IEC 61010 2nd Edition/EN 61010 2nd Edition 
      Canada: CSA C22.2 No. 61010–1–04 
      USA: UL 61010–1 2nd Edition 
Do not install substitute parts or perform any unauthorized modification to the 
product.  Return the product to Agilent Technologies or a designated repair center for 
service to ensure that safety features are maintained. 
Applicable local or national safety regulations and rules for the prevention of 
accidents must be observed in all work performed. 
Ensure that the connections with information technology equipment comply with 
IEC950 I EN60950. 
Observe all ratings and markings of the instrument before connecting the instrument. 
Maximum Input Voltages and Power: 
 RF Output Connector:  50V DC, +23 dBm RF 
 Ext Trig/Ref Connector:  5.5 V DC 
 RF Input:  ±50 VDC, +27 dBm RF 
 DC Input:  19VDC, 4ADC