Tektronix 1780-R

Operating Instructions

1780R-Series Operator’s Manual 3–35

2, 3, and 4). That password is then stored, and remains in memory,

even when the instrument power is turned to standby and back to on.

Change the Password

Move button #2 of S385 (MPU board) to the open position to disable

password operation.

Apply power to the instrument.

Follow preceding instructions to Enable the Password and Define the

Password.

Use the Password

Once password is enabled, it restricts access to the Preset and

Calibrate menus, and the Password menu, shown in Figure 3–17, is

displayed.

To access Name, Store, or Calibrate menu functions, touch the

numbers on the screen in proper sequence to form the password.

Once Name, Store, or Calibrate are selected, entering the correct

password will provide access to the desired menu.

Incorrect Password

Entering an incorrect password produces a momentary display

informing the user of denied access and exits the Name, Store, or

Calibrate menu screen. These menu screens can also be exited by

pushing the PRESET or CALIBRATE button again, or by disabling

the Password according to the preceding instructions.

NOTE. If the operator has reduced the Readout Intensity via the

Calibrate menu, then attempts to exit and re-enter that menu, the

Password menu may not be visible, and instrument functions may

appear to be locked up. Temporarily returning the instrument to

non-password operation will allow re-entry of the Calibrate menu.