6517B-900-01 Rev. A / Jun 2008
Return to
4-15
Model 6517B Electrometer User’s Manual
Section 4: Measurement Options
Configuring filters
Each measurement function has its own filter configuration. Perform the following steps to
configure filter:
1.
Select the measurement function.
2.
Press
CONFIG
and then
FILTER
to display the following menu items:
AVERAGING:
This item is used to control and configure the digital filter
MEDIAN:
This item is used to control and configure the median filter
3.
The menu structure for the two filters (averaging and median) is shown as follows:
a.
AVERAGING
(digital) filter options (
TYPE
is used to select the digital filter type):
•
NONE:
Disables the digital filter.
•
AVERAGING:
Selects the averaging filter and prompts you to enter
the number of readings to average (stack size).
•
ADVANCED:
Selects the advanced filter and prompts you to enter.
the number of readings to average (stack size); after entering the
stack size, you are then prompted to enter the noise tolerance level (0
to 100%).
AVERAGING-MODE is used to select the filter mode; either
MOVING
or
REPEAT
.
b.
MEDIAN
filter options:
DISABLE:
Disables the median filter.
ENABLE:
Enables the median filter and prompts you to enter the range (1 to 5).
4.
Use the menu items to configure a filter. A menu item is selected by placing the cursor on it
and pressing
ENTER
. Parameter values are changed using the cursor keys
(
and
)
and
the
RANGE
(
and
)
keys, and then pressing
ENTER
.
Buffer (data store)
The Model 6517B has a buffer that can store from one to 15,706 readings. The actual number of
readings that can be stored in the buffer depends on how many optional data elements are
included for each reading (see Section 8 of the Reference Manual).
The basic data elements include the reading, units, reading number, and status (overflow or
underflow). In addition to these items, recalled data also includes statistical information such as
minimum, maximum, average, and standard deviation, which are part of the NEXT displays (see
Optional data elements include timestamp, humidity, external temperature, channel number (for
scanning) and the V-Source level.
Storing readings
The following procedure to store readings uses a typical data store configuration: a user-defined
number of readings will be stored in the buffer (fill-and-stop). All aspects of data store configuration
and operation are detailed in Section 8 of the Reference Manual.
1.
Set up the instrument for the desired measurements (function or range).
2.
Configure the data store as follows. A menu item is selected by placing the cursor on it and
pressing
ENTER
. Parameters are changed using the
RANGE
(
and
)
keys and
pressing
ENTER
for more information on navigating through the menu
structure).
a.
Press
CONFIG
.
b.
Press
STORE
.
c.
Select
CONTROL
.
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