Ttl/Cmos Output; Sweep Operation; Voltage Controlled Frequency Operation - BK Precision 4017A Manual De Instrucciones

TTL/CMOS OUTPUT

The TTL/CMOS output jack provides a fast rise time
square wave output. Either a fixed TTL or a variable CMOS
output level is available. The output is positive with respect
to ground and can be used as an external sync pulse for
oscilloscopes or as a variable frequency signal source for
exercising logic circuits. Because of the fast rise time of this
output, cable length should be minimized to limit ringing and
overshoot.
1. Select the desired frequency range and adjust the
frequency controls as required. The OUTPUT LEVEL
and DC OFFSET controls have no effect on the signal
at the TTL/CMOS jack.
2. When the CMOS LEVEL switch (15) is OFF, a TTL
signal is output at the TTL/CMOS jack. Select a CMOS
signal by engaging the CMOS LEVEL switch and adjust
the level of the signal by rotating the CMOS LEVEL
control (8).

SWEEP OPERATION

1. Select LINEAR sweep by leaving the SWEEP LIN/LOG
switch (13) in the released position or LOG sweep by engaging
the SWEEP LIN/LOG switch.
2. Set the starting frequency (highest frequency) of the sweep by
adjusting the COARSE frequency control and observing the
counter.
3. Engage the SWEEP EXT/INT switch (12). The duration of the
sweep can be varied by adjusting the SWEEP TIME control
(18). Sweep time is the same whether the sweep is linear or
logarithmic, and is not affected by the sweep width.
OPERATING INSTRUCTIONS
4. The end frequency of the sweep (lowest frequency) can be
5. The front panel VCG/SWEEP jack (9) provides the internal
If the output of the circuit to be tested is connected to the vertical
scope input, and the SWEEP output to the horizontal, setting the
scope to X-Y mode produces the amplitude vs. frequency plot
mentioned above. However, note that switching to LOG sweep still
produces a linear display on the scope. This is because the
horizontal sweeping signal, the internal log ramp, also becomes
logarithmic when the sweep does. To view a true logarithmic
graph, put the scope back in time base operation and use the Sweep
output solely as a scope trigger. Use the scope's linear time base as
a horizontal deflection source.

VOLTAGE CONTROLLED FREQUENCY OPERATION

The Model 4017A can be operated as a voltage-controlled
generator by using an external control voltage applied to the
VCG/SWEEP input jack. The externally applied voltage will
vary the frequency which is preselected by the range
switches
approximately +l0 V with the COARSE control at full
clockwise decreases the output frequency by about 100
times (a 100:1 ratio).
12
1. Select the desired frequency range and waveform.
adjusted by rotating the SWEEP WIDTH control (16). This
adjustment should generally be made after setting the starting
frequency, because it is largely dependent on that setting.
ramp signal which can be used as the horizontal deflection
signal for an oscilloscope, to give an X-Y display of signal
amplitude vs. frequency. This method is commonly used
when testing the frequency response of audio equipment or
the bandwidth of amplifiers or other equipment. The response
will be displayed high frequency to low frequency from left to
right on the X-Y display.
and the frequency controls. Applying