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3.8.
E 3-22
TEST-PROGRAM
PM
5191
This test program contains 5 submodules:
TEST 1:
Display and LED test
TEST 2:
Keyboard test
TEST 3:
Storage register test
TEST 4:
Strobe test (test of the internal interfaces)
TEST 5:
'Test for the IEEE/IEC-BUS interface
To activate this test program, press the key MODULATION
OFF while power is switched on and keep
it pressed for about 3 seconds.
The return to the main operating mode is only possible by switching power OFF and ON again.
When the test program is activated, the display shows "TEST x'' where 'x' is a number from 1 to 5. This
number_changes continuously and slowly, and by pressing the key MODULATION
OFF at the right
moment, the respective test-submodule will be started.
To leave the test submodules, press the key MODULATION
OFF for about 2 seconds.
TEST 1: Display and LED test
Step 1:
7-segment-display
All display segments and LEDs are switched on for about 2 seconds.
After this the program starts to switch on one segment after the other for four display positions simul-
taneously. Finally, the decimal points of these four positions remain lit and the program starts to do the
same with the next four display positions.
After the last four digits were tested, the program switches on all segments and LEDs and remain in this
state until the key MODULATION
OFF was pressed once again.
Step 2:
LEDs
All LEDs will be switched on sequentially, one after the other, for approx. 0.5 seconds beginning with
the uppermost left one (inside the key sine wave). When the last LED was switched on (key
©LEVEL) it
remains lit and the indication "End" appears at the display until the key MODULATION
OFF was
pressed. Then the program returns to the test-menu.
TEST 2:
Keyboard test
The display shows the indication:
1-01
----
_ Now you must press the first key of the first row:
1
-—-@1----—-
(row 1) —
(column 1)
Key board
—__—_———
columns
@®
©
'
'
columns
|
(| |
O73 @i @3
|
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