Specifications

Manual Control
While rarely needed, the standards within the AutoCal module can be
manually selected under:
Utility/Diagnostics/AutoCal Assurance
The individual paths and standards can then be selected. Refer to the
menu illustrations to the left. Figure 9-4 shows the internal
connections within the AutoCal module and what the standards
selection mean. The reflection standards are labeled:
Load (L)
Short (S)
Open (O)
These are just convenient designators for three distinct complex
impedances. Since the AutoCal module is a transfer standard, the
exact impedances are not important as long as they are stable and
distinct. An error message will appear if the AutoCal module is not
connected and powered when selecting these standards/paths. The
calibration standard type will always be the same for the 2 ports of the
selected path.
AUTOCAL 4-PORT AUTOCAL
MS462XX OM 9-15
L
S
O
L
S
O
A
ssurance
Port X
Port C
Port B
Port A
Figure 9-4. 4-Port AutoCal Block Diagram