Technical data

68 4000 X-Series Oscilloscopes Service Guide
3 Calibrating and Adjusting
2- channel oscilloscope or four equal-length cables for a
4- channel oscilloscope.
Use 50Ω RG58AU or equivalent BNC cables when
performing User Cal.
a For a 2- channel oscilloscope, connect a BNC tee to the
equal length cables. Then connect a BNC(f)- to- BNC(f)
(also called a barrel connector) to the tee as shown
below.
Figure 10 User Calibration cable for 2-channel oscilloscope
b For a 4- channel oscilloscope, connect BNC tees to the
equal- length cables as shown below. Then connect a
Longer cable
To Channel 1
To Channel 2
to TRIG OUT