Anritsu Site Master S331L Scpi Programming Manual page 16

1-4 Sending SCPI Commands
4. Select the Input/Output Basic I/O tab and execute the default *IDN? Query. If the PC is
connected to the instrument the command returns the following information from the
Buffer: manufacturer name ("Anritsu"), model number/options, serial number, and
firmware package number, as shown in the example below.
Figure 1-11. NI VISA Interactive Control USB Basic I/O Tab
When sending SCPI commands over Ethernet, it is required to send a newline
termination character at the end of each command. In the example above, a
Note
newline character ("\n" in this case, but could be different depending on your
programming environment) was used to terminate the *IDN? command.
When sending query commands over raw socket, the entire buffer must be read
before the next query command is sent. Each query result is terminated by a
Note
newline to help identify the end of the query response. Query read operations
could be broken into multiple reads, if necessary.
When using raw socket connections, you must close a session before opening a
new one or before switching to a new protocol (such as USB). If you try to open a
Note new session or switch protocols without first closing the previously opened
session, you may lose communications with the instrument and not be able to
reconnect until you reboot the instrument.
1-12 PN: 10580-00322 Rev. F
Chapter 1 — General Information
S331L PM