•
The “ Continuous Mode” is set when
TRIGger:SOURce
is set to
IMMediate
, and
INITiate:CONTinuous
is set to
ON
. Note that
executing
INITiate:CONTinuous ON
not only sets the Continuous
Mode but also initiates the module. To stop at the end of the current
scan, execute the
INITiate:CONTinuous OFF
command. The
sequence of events for this mode is shown in Figure 4-4 C. The
sequence shows that the current scan list is not read while the module
is scanning. This means that the current scan list cannot be changed
“ on-the-fly” . However, by specifying
LISTL
as the current scan list
before
INITiate:CONTinuous ON
, the sequence of scan lists
specified in
LISTL
will be executed. This mode is the fastest since
the module does not need to read the current scan list or check for the
occurrence of a trigger event.
See the
ROUTe:SCAN
command and Figure 5-3 as well as the
TRIGger:TIMer:MODE
command and Figures 5-7 and 5-8 in Chapter 5 for
full details.
Note
Example programs on your HP command module downloadable driver and
C-SCPI driver media illustrate the three scanning modes.
–
Use program verif.cs for the default mode.
–
Use program counted.cs for the counted mode.
–
Use program through.cs for the continuous mode.
Default Scanning Mode
(Initiate Continuous Off,
Trigger Counter = 1)
A
Counted Scanning Mode
(Initiate Continuous Off,
Trigger Counter > 1)
B
Continuous Scanning Mode
(Initiate Continuous On,
Trigger Source = Immediate)
C
Figure 4-4. Scanning Modes
110 Understanding the HP E1313/E1413
Chapter 4
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