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2-5 SYSTEM GPIB
INTERCONNECTION
There are two rear panel GPIB IEEE-488 connectors. The IEEE 488.2
connector used to interface the 37xxxE to an external computer/
controller via a standard GPIB cable. The Dedicated GPIB connector is
used to interface to plotters and a second source for multiple source
operation via a standard GPIB cable.
GPIB Interface to an
External Plotter
The 37xxxE GPIB interface can be configured to control a suitable
external plotter (refer to Chapter 6, Data Displays). In this mode of
operation, the GPIB is dedicated to this application and only the
37xxxE and the plotter are connected to the GPIB. Standard GPIB
cables are used to interconnect to the plotter.
GPIB Addresses The 37xxxE leaves the factory with the default GPIB address set to
six. This address may be changed using the GP7 menu (see Appendix
A).
2-6 ETHERNET SETUP AND
INTERCONNECTION
The 37xxxE model requires two IP addresses. One is internal and is
used only by the VNA for internal communication, and the other is the
IP address that can be used externally to communicate with the VNA.
The current implementation requires a continuous internal connection
and IP validity is checked as well as monitored.
The internal IP automatically updates when changes happen to the IP
address. It is highly recommended to allow the VNA to change the
internal IP automatically and retain that IP as long as it is in
operation. If it is required to assign two static IP addresses, then
changing the internal IP address is allowed, but assure that the IP is
valid, and, more importantly, available, especially if the instrument is
connected onto your LAN.
NOTE
Five classes of IP ranges are available: Class A, Class B,
Class C, Class D, and Class E. While only Classes A, B,
and C are commonly used, the VNA will accept any IP in
any range with the exception of reserved IPs. Anritsu
highly recommends IP addresses that are either Private
(Class A) or that belong to your own network. The
following Table shows a quick summary of the classes and
the IP assignments:
SYSTEM GPIB INTERCONNECTION
INSTALLATION
2-6 37xxxE OM
Class Range
A 1.0.0.1 to 126.255.255.254
B 128.1.0.1 to 191.255.255.254
C 192.0.1.1 to 223.255.254.254
D 224.0.0.0 to 239.255.255.255
E 240.0.0.0 to 254.255.255.254