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Chapter 2 Operating Your Frequency Counter
Using the Menu
2-40 Operating Guide
2
3Press the Enter key to activate the setting and exit the Menu.
The setting you chose is put into effect, and the Menu closes.
If you need to exit the Menu without changing any of the settings, press
the Clear key. To restore the setting of any menu item to the setting that
was in effect when you opened the Menu, press the Reset/Local key (this
restores the original setting for the current menu item but does not close
the Menu).
The Menu contains the following items (these items are displayed in the
order they are listed if you repeatedly press the up-arrow key after
opening the Menu):
• REF OSC — Sets the Counter to use the internal timebase or an external
timebase connected to the Reference connector on the back panel.
• DO SELF TEST — Starts the sequence of built-in tests.
• BATT VOLTAGE — Displays the current voltage level in the
rechargeable battery packs (only if the Battery option is installed).
• OP HRS — Displays the total number of hours the Counter has been in
operation since it was last calibrated.
• Model number, firmware version number, serial number, OPTNS
(installed options).
• PRESET — Resets all user-settable functions to the factory default
settings.
• BAUD — Sets the data rate for the RS-232 serial port.
• FM — Turns the Counter’s ability to compensate for frequency
modulation on (AUTO) or OFF.
• CH1 LPF — Turns the Channel 1 Low-Pass Filter (approx. 50 KHz) ON
or OFF.
• RECALL — Reads and implements a stored set of user settings from
one of nine (0 – 9) that are stored in non-volatile memory.