Teledyne 2120XL - Trace Nitrogen Analyzer - Manual (Page 52)

Operation Model 2120XL
Teledyne Analytical Instruments 40
 Dig Filt: The Model 2120XL includes a user adjustable
digital filter. The filter has settings 1-10. Setting 1 is the least
amount of filtering and 10 is the highest level of damping.
 Self–Test
: The instrument performs a self-diagnostic test to
check the integrity of the power supply, output boards and
amplifiers.
 PSWD: Security can be established by choosing a 5 digit
password (PSWD) from the standard ASCII character set.
(See Installing or Changing a Password, below, for a table of
ASCII characters available.)
 Logout:
Logging out prevents an unauthorized tampering
with analyzer settings.
 More : Select and enter More to get a new screen with
additional sub functions listed.
 Auto-Cal : Used to define an automatic calibration sequence
and/or start an Auto-Cal.
 Flow: Used to set the flow through the flow controller.
 TRAK/HLD : The operator sets whether the instrument
analog outputs track the concentration change during
calibration and sets a time delay for the concentration alarms
after calibration
 Cal Hold Timer: Allows alarm suppression and analog
output value hold times during calibration events for a user
adjustable period.
 Model : Displays Manufacturer, Model, and Software
Version of the instrument.
 Out-Cal: Analog output calibration allows the user to
calibrate the 4 and 20 mA analog output values.
 Lin: Used to linearize the output of the controller.
To enter any of the system functions, use the ◄►arrow keys to
move to the function and then use the ENTER key to engage that
function.
4.5.1.1 D IGITAL F ILTER
Upon entering the digital filter function, the following screen
appears on the display: