Annexes
R&S
®
CMW500
273
User Manual 1173.9463.02 ─ 02
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"IEEE1174" mode uses only the "Data Port", even for transfer of emulation codes.
This implies that the controller must listen for service requests and emulation code
responses at the data port.
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"Agilent" mode supports both "Data Port" and "Control Port". The setup of a second
connection via the control port is optional and recommended. It can be used for
transfer of emulation codes. Alternatively only one connection can be set up via the
"Data Port" and used for all messages.
Refer to the
of the "Setup" menu for related instrument settings.
8.1.3 GPIB Bus Interface
The instrument can be equipped with one or two GPIB bus (IEC/IEEE bus) interfaces
which are available as options R&S CMW-B612A and R&S CMW-B612B, respectively.
The two interface connectors labeled "IEEE 488 CH 1" and "IEEE 488 CH 2" are located
on the rear panel of the instrument.
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The "IEEE 488 CH 1" connector is intended for remote control of the R&S CMW500
from a controller.
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The "IEEE 488 CH 2" can also be used to control further devices from the R&S
CMW500.
In order to be compliant with EMC regulations open IEEE cables should be avoided. IEEE
cables have to be connected on both sides.
Characteristics of the interface
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8-bit parallel data transfer
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Bidirectional data transfer
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Three-line handshake
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High data transfer rate of max. 1 MByte/s
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Up to 15 devices can be connected
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Maximum length of the connecting cables 15 m. The length of a single connecting
cable should not exceed 2 m, if many devices are used, it should not exceed 1 m.
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Wired OR if several instruments are connected in parallel
Interfaces and Connectors
