- Hewlett-Packard Reference Manual

Keyboard and Displays

Loading default setpoints

With the keyboard locked, Figure 2•6shows the display occurring if a

setpoint entry is attempted:

ACTUAL SETPOINT

KEYBOARD LOCKED

KEYBOARD LOCKED Message Display

Figure 2-6

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:

Calibration constants for oven temperature control

All gas flow rate monitoring information (gas types and calibration

constants)

Column 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