OPTION
08
GENERAL PURPOSE INTERFACE BUS
Option 08 makes 545A/548A microwave counters fully compatible with the General Purpose Interface Bus
(GPIB). With this option the counter can respond to remote control instructions and can output measure-
ment results via the
IEEE 488-1978 Bus interface. At the simplest level the counter can output data to
other devices such
as
the HP 5150A Thermal Printer. In more sophisticated systems
a
calculator or other
system controller can remotely program the counter, trigger measurements, and read results. Of course,
a
calculator or computer adds other benefits to
a
GPlB based measurement system. The calculator can
manipulate data to compute the mean and standard deviation, check for linearity, and compare results to
limits, or perform many other functions.
GPlB FUNCTIONS IMPLEMENTED
The GPlB interface function subsets implemented are:
complete capability
complete capability
basic talker, serial poll, Talk Only mode, unaddress if MLA
basic listener, Listen Only mode, unaddress if MTA
complete capability
complete capability
complete capability
complete capability
NOTE
When DEVICE CLEAR or SELECTED DEVICE CLEAR GPlB bus
command
is
received, the counter will revert to the power on state.
When DEVICE TRIGGER GPlB bus command
is
received, the counter
will initiate
a
new frequency reading cycle. The converter will not
be reset.
SETTING ADDRESS SWITCH
The counter employs
a
decimal address switch located inside the unit. This
is
set for decimal address 19
at
the factory. To verify the switch setting without removing the top of the counter, simply initiate test 10;
enter
9C04 and read the address on the display. A description of test 10 can be found on page 6-7. After
reading the address, terminate the test by pushing the clear display key.
The address switch is also used to put the counter in the Talk Only (to) or Listen Only (lo) mode. To put
the counter in the Listen Only mode simply set the address switch to any number 41 or higher.
Scans by ArtekMedia © 2007
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