Keysight N6705 - Page 85

Disassembly 4
Model N6705 Service Guide 85
Accessing the Calibration switch
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.
CAUTION
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
1
Switch
2
Description
Normal
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).
Clear
password
UP DOWN The password is reset to 0 when the instrument is
turned on. Use this setting if you have forgotten the
password.
Inhibit
calibration
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.