NARDA 8718B - Manual (Page 8)

7 Chapter 2 Understanding Your Model 8718B
Numeric Keypad
Use the numeric keypad to enter number data into the Model
8718B. You also use the numeric keypad to select a numbered
option listed on the display screen.
Special Function Keys
Six special function keys enable you to perform specific
functions.
Esc
Returns you to the previous menu. In a few
cases you must enter a selection rather than
use the Esc key.
Auto Enables you to automatically zero the meter
Zero and probe.
Help Displays a help screen that explains your options.
Test Turns on the built-in low frequency and high
Source frequency probe test sources for approximately
20 seconds.
Range Locks in a specific measurement range for the
bar graph. The digital display is not affected. The
meter automatically displays a digital value over
the probe’s entire measurement range. See Bar
Graph Ranges on page 23.
Enter Stores data you entered with the numeric
keypad. Confirms an option you selected from
a menu screen.