HP 8530A User Manual page 27

Front Panel Overview
ENTRY Block
G/n M/

4 5 4 5
k/m x1
4 5 4 5
8 9
Changing Values Using the Numeric Keypad
+/ +/
4 5 4 5
BACKSPACE
4 5
Getting Acquainted with the HP 8530A Receiver 1-17