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5.5 GPIB Interface
This section will introduce the GPIB bus standards, connection methods, and some settings of the instrument.
5.5.1 GPIB Bus
IEEE488 (GPIB) is an international bus interface standard used on intelligent instruments. IEEE is the English
abbreviation of Institute of Electrical and Electronics Engineers, and 488 is the standard number. Through this
interface, ST1963 can communicate with PC or others intelligent equipments and meanwhile can make up
automatic test system with the other test equipments. Multiple test instruments can be connected simultaneously
on the same bus. In this instrument, the instrument adopts the IEEE488.2 standard, and the GPIB interface is
purchased by the user. Control command system is open so that user can use the PC operation interface provided
by ST1963 or take measurements by the control command system. The control command system supports most
functions of the instrument, that is to say, user can execute almost all operations on PC. Thus remote control to the
instrument is realized.
When configuring a GPIB system, the following restrictions must be adhered to.
1
．
The total length of cable in one bus system must be less than or equal to two meters times the number of
devices connected on the bus (the GPIB controller counts as one device) and the total length of cable
must not exceed 20 meters.
2
．
A maximum of 15 devices can be connected on one bus system.
3
．
There are no restrictions on how the cables are connected together. However, it is recommended that no
more than four piggyback connectors be stacked together on any one device.
Method 1 of GPIB cable connection:
