User guide

1-4
1 Introduction Model 3020M
Teledyne Analytical Instruments
1.5.1 UP/DOWN Switch
Functions: The UP/DOWN switch is used to select the function to be
performed. Choose UP or DOWN to scroll through the following list of
twelve functions:
• Auto-Cal Set up an automatic calibration sequence.
• PWD Install a password to protect your analyzer setup.
• Logout Locks Setup Mode.
• Version Displays model and version of analyzer.
• Self-Test Runs internal diagnostic program, displays results.
• Span Span calibrate the analyzer.
• Zero Zero calibrate the analyzer.
• Alarms Set the alarm setpoints and attributes.
• Range Set up the 3 user definable ranges for the instrument.
• Contrast Adjust LCD contrast.
• Standby Leave analyzer powered, but no outputs or displays.
WARNING: THE POWER CABLE MUST BE DISCONNECTED TO
FULLY REMOVE POWER FROM THE INSTRUMENT.
CAUTION: VOLTAGE MAY BE PRESENT ON ALARM CON-
TACTS WHEN LINE POWER IS DISCONNECTED.
Subfunctions: Once a Function is entered, the UP/DOWN switch is
used to select between any subfunctions displayed on the VFD screen.
Parameter values: When modifiable values are displayed on the
VFD, the UP/DOWN switch can be used to increment or decrement the
values.
1.5.2 ESCAPE/ENTER Switch
Data Entry: The ESCAPE/ENTER switch is used to input data, from
the alphanumeric VFD screen into the instrument:
• Escape Moves VFD display back to the previous screen in a
series. If none remains, returns to the Analyze screen.
With subfunction selected, moves VFD back through
items on screen, to first item, then moves VFD to
previous display.
• Enter With a Subfunction Selected: Moves VFD on to the
next screen in a series. If none remains, returns to the
Analyze screen.
Contrast Function is DISABLED
(Refer to Section 1.6)