Keyboard and Displays

Loading default setpoints

With the keyboard locked, Figure 2•6shows the display occurring if a setpoint entry is attempted:

Figure 2-6

ACTUAL SETPOINT

KEYBOARD LOCKED

KEYBOARD LOCKED Message Display

If the HP 5890 keyboard is locked while the instrument is under INET control, a setpoint file may be loaded into HP 5890 memory from the controller, but the loaded setpoints cannot then be edited at the HP 5890 keyboard until it is unlocked.

After locking or unlocking the keyboard, return to operation by pressing any function key (e.g., OVEN TEMP ).

Loading default setpoints

This function permits resetting HP 5890 operating setpoints to a standard set of values. Only the following information is retained:

CCalibration constants for oven temperature control

CAll gas flow rate monitoring information (gas types and calibration constants)

CColumn compensation data, including detector assignments

Note: Since user•definedsetpoints are lost in the process, any critical HP 5890 setpoints should be recorded for later reentry before proceeding.

Through the keyboard, select CALIB AND TEST mode, function 6:

CLEAR . 6

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