F.W. Bell 8000 series, Инструкция по эксплуатации

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F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual
Section 8 – Remote Operation 8-11
Pin-7: Not Ready for Data
(NRFD) This line is asserted by a listener until it is
ready to accept a data byte.
Pin-8: Not Data Accepted
(NDAC) This line is asserted by a listener until it has
accepted a data byte.
Pin-9: Interface Clear (IFC) Asserted by the system controller to force
all other devices to go idle.
Pin-10: Service Request
(SRQ) This line can be asserted by any device
requiring service.
Pin-11: Attention (ATN)
Asserted by the controller to indicate that
the byte on the data bus is an interface
command.
Pin-12: Not Connected
Pin-17: Remote Enable
(REN) Asserted by the system controller to tell the
systems receiving data that they can
actually use the data, and that their front
panel controls are locked out.
Pin-18,19, 20. 21, 22, 23.
24 Ground (GND) These are the common return lines for all
other signals except earth ground (Pin-12).
Implementation
The 8000 Series Gaussmeters implement GPIB communications using an
externally connected Prologix GPIB-USB Controller through the meter’s front
panel USB port.
The Prologix GPIB-USB controller is not included with the meter and can be
purchased through distribution or directly from Prologix, visit
www.prologix.biz
for more information.
The GPIB-USB controller converts any computer based USB port into a GPIB
controller or device. For GPIB implementation on the 8000 Series
Gaussmeters the controller is automatically set up as a device which allows
the meter to be a talker and listener on the GPIB bus. Meaning that the meter
will listen for valid commands to its GPIB address and respond accordingly to
those messages immediately. There is no output message queue available in
this configuration and the GPIB interface works very similarly to the serial
communication ports.
No customer configuration of the Prologix GPIB-USB Controller is required.
The meter will automatically configure the device. Refer to the Prologix GPIB-
USB Controller User Manual for additional information.