Specifications

9-8 4-PORT AUTOCAL
This section describes how to setup and use the 4-Port AutoCal
module. Once setup, the use of the module is illustrated through
discussion of the MS462XX firmware and associated help screens. This
section covers two models:
q
36584KF 10 MHz to 9 GHz K female connectors, 4-Ports
q
36584NF 10 MHz to 9 GHz N female connectors, 4-Ports
4-Port AutoCal Description
The 4-Port AutoCal module provides an automatic system for fast,
repeatable, high-quality calibrations of a multiport Vector Network
Measurement System (VNMS), such as the MS462XX. The 4-Port
AutoCal module can be used to perform 1, 2, 3 and 4-Port calibrations
on any MS462XX VNMS. 4-Port calibrations can only be performed on
a 4-Port VNMS.
The 4-Port AutoCal module uses electronic switches to exchange the
internal calibration standards. Isolation standards are not included in
the module; however, isolation calibration steps can be performed
using external terminations.
Like the 2-Port AutoCal module, a standard RS-232 serial cable is
used to connect the 4-Port AutoCal module to the MS462XX. Power is
supplied by a connecting cable from a universal power supply (+5V,
+15V, -15V). A power on/off switch is not provided. The power supply
cable should be connected to the AutoCal module BEFORE
connecting the line cord to the wall outlet.
The 4-Port AutoCal module ships with a power supply and attached
cable, a serial interface cable, and a disk containing a characterization
file.
As with the 2-Port AutoCal version, software operation falls into
three broad categories:
Calibration Calibration is the process of calibrating the instru
-
ment using the AutoCal module. The AutoCal
module is connected between the VNMS test ports
to perform the calibration. The AutoCal port con
-
nectors are all female since this matches the config
-
urations used most often during measurements. If
other connector matings are needed, phase equal
insertables (PEIs) can be used and are available as
375XR/1 in sets of 5. Contact the factory for more
details or for information on different connector
types.
4-PORT AUTOCAL AUTOCAL
9-10 MS462XX OM