ACCP SUBCOURSE NUMBER MM0462
MODEL 5345A FREQUENCY TIME MEASUREMENT SYSTEM
EXERCISES FOR LESSON 3
1.
In figure 1B, if a logic state of "1" is present at the Z terminal,
what must be the states at the A and B terminals?
a.
A
High, B Low
b.
A
Low, B High
c.
A
High, B High
d.
A
Low, B Low
2.
In positive Logic NAND, a 1 will be present at the output when
a.
A is Low, B is Low.
b.
A is Low, B is High.
c.
A is High, B is Low.
d.
Any of the above states exist.
3.
Which type logic is not to be found in the circuitry of the Model
5345A?
a.
RTL
b.
TTL
c.
ECL
d.
EECL
4.
When examining the logic states in an ECL circuit, what approximate
voltage level represents a High state?
a.
0V
b.
-0.6V
c.
-0.8V
d.
-1.5
5.
If frequencies below 10 MHz are properly displayed by the counter but
higher frequencies are not, what circuit or component in the input
circuitry is probably defective?
a.
Impedance Converter Q1
b.
C9
c.
U2
D.
U4
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