Keithley 6485 - Digital Filter Control

Model 6485 Picoammeter Instruction Manual Range, Units, Digits, Rate, and Filters 4-11
Digital filter control
The AVG key is a toggle key: it will either enable the digital filter (displays AVERAGE
ON) or disable the digital filter (displays AVERAGE OFF). To configure the median filter:
NOTE For the following procedure, use the  and  keys and the RANGE  and 
keys to set values. The  and  keys provide cursor control, while the  and 
keys increment and decrement the value.
To return to the previously set value and cancel configuration, press EXIT
instead of ENTER. Values change immediately when the ENTER key is pressed.
1. Press the CONFIG key.
2. Press the AVG key. The present number of reading conversions to average (filter
count) will be displayed (flashing).
3. Set filter count (1 to 100):
• Use the range keys  or  to display the desired filter count value at the
RDGS prompt.
• Press ENTER to set.
4. Set filter type (REPEAT or MOVING AV):
• Use the range keys  or  to display the desired filter type at the TYPE:
prompt.
• Press ENTER to set.
5. Enable or disable advanced filter (YES or NO).
• Use the range keys  or  to display the desired state at the ADVANCED?:
prompt.
• Press ENTER to set.
6. If the advanced filter is enabled (ADVANCED?:YES), enter the noise tolerance
level at the NTOL: prompt (0–105.0000%).
• Use the range keys , , , and , to display the desired value.
• Press ENTER to set.