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IM WT3001E-17EN
1.4 Connecting the GP-IB Cable
GP-IB Cable
The GP-IB connector used on this instrument is a 24-pin connector that conforms to the
IEEE St’d 488-1978. Use a GP-IB cable that conforms to this standard.
Connection Procedure
Connect the cable as shown below.
Precautions to Be Taken When Making Connections
• Firmly tighten the screws on the GP-IB cable connector.
• Use an NI (National Instruments) model GP-IB port (or card) on the PC side. For
details, see section 1.3.
• If a converter is used along the communication cable connecting the WT and PC (for
example, a GP-IB-to-USB converter), malfunctions can occur. For details, consult with
your Yokogawa dealer or representative.
• Multiple cables can be used to connect multiple devices. However, no more than 15
devices including the controller can be connected on a single bus.
• When connecting multiple devices, each device must have its own unique address.
• Use a cable of length 2 m or less for connecting the devices.
• Make sure the total cable length does not exceed 20 m.
• When communicating, have at least two-thirds of the devices turned ON.
• To connect multiple devices, wire them in a daisy-chain or star configuration as shown
below. You can also mix these configurations. Loop configuration is not allowed.
CAUTION
When connecting or disconnecting communication cables, make sure to turn OFF
the PC and this instrument. Otherwise, erroneous operation or damage to the
internal circuitry may result.
French
ATTENTION
Lors de la connexion ou déconnexion des câbles de communication, veiller à
mettre le PC et cet instrument hors tension. À défaut, des dysfonctionnements et/
ou un endommagement du circuit interne risquent de se produire.