User`s guide

1-2 Chapter1
Introduction
Three-Port Test Set
Three-Port Test Set
The Option H39 is a modified 8753ES network analyzer that addsa third
port to the standard instrument. The three ports allow measurement
applications for three-port devices with the ability to make S-parameter
measurements between any two ports.
Key sequences for setting up the analyzer use standard Hardkey (initial
capital letters) and SOFTKEY (all capital letters) conventions. For a
complete definition of the different keys, refer to your analyzer’s
standard documentation.
This user’s guide provides information on how to operate the Option H39
using measurement (Meas) menu select ports, I/O commands, and GPIB
commands, as well as examples of how to implement the commands. It
also provides the specifications for the Option H39. If the Option H39 is
set up or operated as a standard analyzer, refer to the standard
documentation included with your shipment.
NOTE Port 1 and Port 3 are the instrument’s default ports. On preset or when
the power is turned on, Port 1 and Port 3 are active.
The port status is indicated by an LED status light located to the right of
each test port. Three states are indicated by the LED status light:
• Bright: Indicates the source (incident) port.
• Dim: Indicates the receive (through) port.
• Off: Indicates the port is inactive.
For further information on the status indicators, refer to “Front Panel
Features” on page 2-3, and Chapter 3, “Theory of Operation and
Troubleshooting” of the service guide.