Storing And Recalling Readings - Keithley 6517A User Manual

Front Panel Operation
DELTA: With this selection, each timestamp is referenced to
the timestamp for the previous reading. This provides the
time between buffer readings. Timestamps are provided in
days, hours, minutes and seconds (see REAL-TIME times-
tamp type) or in seconds (see RELATIVE- TIME timestamp
type).
ELEMENTS
Optional data elements can be included for each reading
stored in the buffer. After selecting ELEMENTS, the status
of each optional data element will be displayed. A "y" indi-
cates that the element is in included, while a "n" indicates
that the data element is not included. To change the status of
a data element, place the cursor on the data element status
and press the RANGE or
The optional data elements are described as follows:
Timestamp — When selected, the timestamp will be dis-
played on the primary display for each stored reading. The
form that timestamp is displayed depends on the selected
TYPE and FORMAT (see TIMESTAMP).
Humidity and External Temperature — When selected, these
readings are included in a NEXT display (see paragraph
2.16.3). Note that the appropriate sensor has to be connected
to the instrument, and it has to be enabled via the DATA-
STAMP item of GENERAL menu (see paragraph 2.19.7).
Channel — When selected, the scanned channel number will
be displayed on the primary display for each stored reading.
Note that if a scan was not performed, a channel number will
not be displayed even though it is a selected data element.
2-98
key.
V-Source — When selected, the sourced voltage level will be
available as a multiple (NEXT) display (see paragraph
2.16.3).
DISPLAY
This menu item is used to enable or disable the display dur-
ing the storage process.
YES: This option enables the display. When enabled, read-
ings are displayed along with the message that indicates that
readings are being stored.
NO: With this option selected, the display and front panel are
disabled ("FRONT PANEL DISABLED" message dis-
played). This option optimizes speed and provides a more
uniform interval between readings. Pressing LOCAL during
the storage process, will return the display and front panel
back to normal.

2.16.2 Storing and recalling readings

Tables 2-24 through 2-26 detail the sequence of steps for the
various modes of buffer control. The tables assume the buffer
is configured as explained in paragraph 2.16.1. Note that dur-
ing data storage, the reading number on the bottom line of
the display is one ahead of the reading on the top line.
There are "multiple displays" available when recalling buff-
ered readings. These are explained in paragraph 2.16.3.