Specifications

240 Chapter 14
Outline of Programming Using COM
Outline of E4991A COM
Saving/recalling files Saves measurement parameter of
E4991A, measurement results,
etc. in files and recall saved
contents.
No dedicated COM interface is
prepared.
When COM object is executed
from a Personal Computer that
uses remote user interface
function, the folder at the
Personal Computer side is used
to save/recall the files.
Using printer Outputs measurement results of
E4991A to the printer.
Dedicated GPIB commands
are prepared.
No dedicated COM interface is
prepared.
When COM object is executed
from a Personal Computer that
uses remote user interface
function, measurement results,
etc. of E4991A are outputted to
the printer registered at the
Personal Computer side.
Copies set parameters of E4991A,
measurement results, etc. onto the
clipboard.
Not prepared. The following COM interfaces
are prepared assuming usage of
a Personal Computer that uses
remote user interface function.
• GetTextData method on
page 535
• GetScreenImage
method on page 535
Setting display screen Sets the display screen. Dedicated GPIB commands
are prepared.
No dedicated COM interface is
prepared.
Error processing Reads errors. Dedicated GPIB commands
are prepared.
No dedicated COM interface is
prepared.
Detects an E4991A measurement
failure and processes it.
Use the GPIB Status report
system.
Use the following COM
interfaces.
• Unlocked event on
page 539
• DcBiasOverload event
on page 539
• RfOverload event on
page 540
Detects an error other than the
above type and processes it.
No dedicated COM interface is
prepared.
By combined execution of
COM object and GPIB
command, status bit figures
specified by each status register
of GPIB Status report system
can be read, but no processing
can be performed during bit
transition from 0 to 1 or 1 to 0.
Table 14-1 Function comparison of GPIB commands and COM objects