Keysight N6705 Service Manual page 85

Accessing the Calibration switch
CAUTION
Normal
Clear
password
Inhibit
calibration
Model N6705 Service Guide
Step 1. Remove the right side cover (side with handle).
Remove the two screws with a Philips pozidrive along the right side of
the unit. Then remove the screw at the back of the side panel using a T10
driver. Remove the panel. The calibration switches are visible through the
cutout.
1 2 3 4
Figure 4-5
Step 2. The calibration switch is visible through the cutout.
To change the calibration switch settings, use a small screwdriver to
move the switches. See Chapter 3 for detailed Calibration procedures.
Do not use a pencil to move the switches. Any graphite dust that
accumulates on the switches will conduct electricity.
Switches 1 and 2 set the calibration configuration as follows:
Switch Switch Description
1 2
DOWN DOWN This is the default or as-shipped switch setting. The
calibration functions are accessible after entering a
numeric password. The default password is 0 (zero).
UP DOWN The password is reset to 0 when the instrument is
turned on. Use this setting if you have forgotten the
password.
UP UP All calibration commands are disabled. This is useful
where calibration access is guarded by instrument
seals.
Step 3. Replace the side cover when finished.
Disassembly 4
85