13
Power/Backlight
Tone
Test
Calibration
Toggle Units
Memory
Up/Down
Error
The “Error” message appears in the lower right corner of the LCD display
screen under the following circumstances:
▪
Calibration results in an invalid NVP value outside of the 20 to 99.9
NVP value range.
▪
SSTDR reflection was not detected due to a properly terminated cable
or excess signal loss.
Note:
Refer to the
Using Calibration Mode
and
Using Test Mode
sections for trouble-shooting the “Error” message when using
either of these modes.
Keypad
The Snap Shot™ is equipped with seven buttons, illustrated in Figure 3.
Four buttons, appearing in the top two rows of the keypad, are used with
Test and Tone Modes. Two Up/Down buttons are used to edit. One button
is used to power the unit On/Off. The button functions are explained in
Table 8.
Figure 3.
Keypad
