The 4801 is a cable from Keithley.

Additional Features:

• Low Noise Input Coax Male BNC to Male BNC Cable, 1.2m, 4 ft
• For use with Models 6482, 6485, and 7158

The Keithley 4801 is a Low noise Coax Cable, 1.2m (48 in) in length, with Male BNC Connectors on each end. The 4801 is for use with Models 6482, 6485, and 7158.