Chapter 2 Operating Your Frequency Counter
Using the Utility Menu
2-56 Operating Guide
2
To Run the Self-Test Routines
Overview of the Self-Test Routines
The Utility menu includes the following three self-test menu items:
• TEST LOOP:
• TST PRINT:
•TEST:
The Counter includes several self-tests. Some self tests are performed at the power-up
of the Counter. Some of these self tests can also be invoked from the Utility menu.
Other tests can also be invoked from the Utility menu, but a slightly different test is
performed. For example, a power-up self test might work regardless of connections to
the inputs while a Utility menu self test may require a specific signal to be connected.
Some self tests can only be invoked from the Utility menu, for example, the keypad
test.
You can specify that the tests should loop forever (TEST LOOP: ON or OFF) or
until any key is pressed.
You can also specify that failure messages be sent to a printer, the RS-232, and the
GPIB—if in talk-only (TST PRINT: ON or OFF).
There are 14 choices for the TEST: menu item. They are listed and described in the
following text.
TEST: NO —no test.
ALL — run all tests, except display, keypad and printer tests.
DISP — illuminate the indicators and vacuum-fluorescent display
(VFD) segments. Note, this test is not available if TEST
LOOP: is ON. TEST LOOP: must be OFF.
CPU — test processor(s).
ROM —checksum the ROM.
RAM —test RAM.