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Model 6517B Electrometer Reference Manual
Coulombs configuration
The following information explains the various configuration options for the coulombs function. The
configuration menu is summarized in the following table. This menu is accessed by pressing CONFIG
and then Q.
Note that you do not have to select a function to configure it. When the function is selected, it
assumes the programmed status.
Coulombs configuration menu
Menu item
SPEED
NORMAL
FAST
MEDIUM
HIACCURACY
SET-SPEED-EXACTLY
SET-BY-RSLN
FILTER
AVERAGING
TYPE
NONE
AVERAGING
ADVANCED
AVERAGING-MODE
MEDIAN
DISABLE
ENABLE
RESOLUTION
AUTO
3.5 d, 4.5 d, 5.5 d, 6.5 d
AUTO-DISCHARGE
AUTORANGE
SPEED
The SPEED parameter sets the integration time of the A/D converter, the period of time the input
signal is measure (also known as aperture).
FILTER
Use this menu item to configure the two basic filter types; averaging and median. Note that you can
use either the averaging filter, the median filter, or both. The filter menu is available from the function
configuration menus (for example, press CONFIG V) or by pressing CONFIG FILTER with the
desired function already selected.
RESOLUTION
The RESOLUTION parameter sets the display resolution.
6517B-901-01 Rev. C / August 2015
Description
Measurement speed (integration time) menu:
Select 1 PLC (power line cycle, 16.67 ms for 60 Hz, 20 ms for 50 Hz and 400 Hz)
Select 0.01 PLC
Select 0.1 PLC
Select 10 PLC
Set integration time in PLC (0.01-10)
Default to setting appropriate for resolution
Filter menu:
Configure digital averaging filter:
Select type of average filter:
No average filtering performed
Program a simple average filter (1-100 readings)
Program a simple average filter (1-100 readings) with noise tolerance window
(0-100 % of range)
Select moving average or repeating average mode
Configure median filter:
Disable median filter
Enable median filter and specify rank (1-5)
Display resolution menu:
Default to resolution appropriate for integration time
Select a specific resolution
Enable (specify level) or disable auto discharge
Select autorange limits (high or low)
Section 4: Basic measurements
4-33
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