Programming
243
While the E4990A is turned OFF, the SRQ status of the E4990A is active.
To prevent an incorrect operation on the SRQ of the GPIB remote control
system, disconnect the E4990A from the system when the E4990A is
turned OFF.
Required Equipment
• E4990A
• External controller (PC or workstation that can be connected to LAN
and Agilent I/O Library is installed into)
• Other devices (other instruments and/or peripherals that serve your
purpose)
• GPIB cables
Scale of system you can construct
• You can connect up to 15 devices in a single GPIB system.
• The length of cables to connect between devices must be 4 m or
less. The total length of connecting cables in a single GPIB system
must be 2 m × the number of connected devices (including the
controller) or less. You cannot construct the system in which the
total cable length exceeds 20 m.
• The number of connectors connected to an individual device must be
4 or less. If you connect 5 or more connectors, excessive force is
applied to the connector part, which may result in failure.
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