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7.5
Communication Cables
•
GPIB cable - Use standard IEEE-488, 26 AWG GPIB cable up to 3 meters in length.
•
RS485 link cable - Use serial link cable with RJ-45 shielded connectors (P/N: GEN/RJ45).
7.6
IEEE Controller Configuration
A typical IEEE controller is a personal computer with an IEEE interface card. Each card vendor
supplies its own configuration instructions and interface software.
Each time the software is executed, the controller is configured as follows:
•
GPIB instrument address = Power supply address.
•
Serial bus Baud Rate = 115200.
•
SCPI protocol.
•
EOI Flag = TRUE. The “End or Identify” is a control line in the IEEE cable that is initiated when
the last character of a message string is sent. It is not supported by this interface.
•
EOS Flag = FALSE: The “End of String”, used in some instruments to indicate the last
character of a message. It is required for this interface.
7.7
Power Supply Configuration
To communicate over the IEEE interface, power supply has to be configured to IEEE. If IEEE
option is installed, by default, power supply is pre-configured to the IEEE communication.
If, for any reason, IEEE communication is not selected, navigate to communication menu and
select OPT.
Refer to section 4.2.2 to set the IEEE communication interface via the Front Panel.
Refer to section 4.14.10, SYSTem:[COMMunicate]:INTerface <DSC> command to select
communication interface by communication.
7.8
Execution Time
Command execution time through IEEE interface is longer than Serial communication. Refer to
some examples below:
WAVE:TIME 1,1,1,1,1,1,1,1,1,1,1,1
Add a delay between commands, if the communication rate is high (many commands in series).
Refer to execution time above and estimate the required delay according to the application /
applied command set.
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