15
Step 2
Turn the
FREQUENCY
knob till you reach the desired frequency, 878.00 KHz.
The LCD display should look like Figure 4. The output frequency is now 878 KHz.
Step 3
Press the
SINE WAVE SELECT
button. The unit must output a symmetrical sine wave type signal on the
OUTPUT
jack. The
SINE
WAVE SELECT LED
will light; the
TRIANGLE WAVE SELECT LED
will not light.
Step 4
Turn the
DUTY CYCLE
knob clock wise until the displayed duty cycle reaches
65%. The LCD display should look like Figure 5. The output signal on the
OUTPUT
jack should be asymmetric (an example of an asymmetric sine wave is
given in section 3.2.4.3).
The
DUTY CYCLE LED
must be lighted.
Step 5
Turn the
OUTPUT
knob clockwise until the displayed output level r 6.0V.
The LCD display should look like Figure 6.
Step 6
Turn the
DC OFFSET
knob counter clockwise until the displayed output offset
reaches – 1.023V. The LCD display should look like Figure 7.
The
DC OFFSET
LED must be lighted.
Step 7
Press the
TTL/CMOS
button. The
CMOS LED
will light; the
TTL LED
will not
light. Turn the
CMOS LEVEL
knob clockwise until the
CMOS
level reaches 8.0V.
The LCD display should look like Figure 8.
878.00KHz
1M
1.01 V Output
FREQUENCY
RANGE (Hz)
LEVEL
Peak-to-Peak
(into 50
Ω
)
Figure 4: LCD example of using
fourth frequency range
878.00KHz
1M
65% DutyCycle
FREQUENCY
RANGE (Hz)
LEVEL
Peak-to-Peak
(into 50
Ω
)
Figure 5: LCD example of displaying duty
cycle parameter
878.00KHz
1M
- 1.023 V Offset
FREQUENCY
RANGE (Hz)
LEVEL
Peak-to-Peak
(into 50
Ω
)
Figure 7: LCD example of displaying
offset parameter
878.00KHz
1M
6.00 V Output
FREQUENCY
RANGE (Hz)
LEVEL
Peak-to-Peak
(into 50
Ω
)
Figure 6: LCD example of
displaying level
878.00KHz
1M
8.0 V CMOS OUT
FREQUENCY
RANGE (Hz)
LEVEL
Peak-to-Peak
(into 50
Ω
)
Figure 8: LCD example of displaying
CMOS output level
