Jameco Electronics 2161431, Инструкция по эксплуатации

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Test 2B without
oscilloscope.
Fig. 4 U4 pin 14
U5 pin 14
2.5VDC at test points,
increasing voltage with higher
frequency (smaller resistance
at VR1).
No 0V or 5V constant voltage
at test points.
Test 3: CD4017
counters U4, U5.
Fig. 5, 6 U4 pins 1, 2, 3, 4, 5, 6, 7,
9, 10, 11, 12, 15.
U5 pins 1, 2, 3, 4, 5, 6, 7,
9, 10, 11, 12.
Positive pulse for every 10
clock cycles at Q0 – Q9 output
pins of U4 and U5.
Logic high for first 5 counts at
Carry Out (pin 12) of U4 and
U5. Logic low for the remaining
counts.
1us pulse at U4 Reset (pin 15).

Test 3 without
oscilloscope.
Fig. 5 U4 pins 1, 2, 3, 4, 5, 6, 7,
9, 10, 11, 12.
U5 pins 1, 2, 3, 4, 5, 6, 7,
9, 10, 11, 12.
0.5VDC at each Q0 – Q9
output pins.
2.5V DC at Carry Out pins.
Test 4: Counters
and LED drivers
ULN2003.
Fig. 7 N/A Two LED light spots, one for
LED0 – LED9, another one for
LED10 – LED19.
VR1 can adjust LED light spot
speed.
Test 5: Complete
system test.
N/A N/A Only one LED light spot.
SW1 can stop the light spot
and resume.
Winning position can trigger
buzzer.
Non-winning positions cannot
trigger buzzer.