OPERATING INSTRUCTIONS
11
The
B&K Precision Model 4040A
Sweep/Function Generator is a
versatile instrument, capable of producing a variety of output
waveforms over a broad range of frequencies. To gain a working
familiarity with the unit, it is recommended that it be connected
initially to an oscilloscope, so that the effects of the various controls
on the output waveforms can be observed. Use this manual as
required for reference until becoming accustomed to the operating
procedures.
FREQUENCY AND WAVEFORM SELECTION
l. Initially, verify that the
DUTY CYCLE
(2),
CMOS LEVEL
(3),
DC OFFSET
(4),
-20dB
(5), and
SWEEP EXT/INT
(22),
and
AM/FM
(35) switches are in the released position. This
will produce a symmetrical waveform unaffected by the sweep
generator and other controls.
2. Plug the unit into an appropriate power source and turn it on by
depressing the
POWER
switch (1).
3. Select the desired waveform (SINE, SQUARE, or TRIANGLE)
by depressing one of the
FUNCTION
switches (9). Phase
relationships of the waveforms are shown in Fig. 2.
4. Select the frequency of the waveform by depressing one of the
RANGE
switches (6). The output frequency is displayed, along
with the appropriate measurement units.
KHz
or
Hz
(31), on the
LED display.
5. Rotate the
COARSE
(28) frequency control to quickly set the
output frequency to the approximate desired value. The
FINE
(26) frequency control can then be used to easily set the output
to the specific desired value. The frequency selected is
available at the
OUTPUT
jack (13). In addition, a digital
signal, either TTL or CMOS is available at the
TTL/CMOS
jack (15) (refer to the “TTL/CMOS OUTPUT” section of this
manual).
Figure 2. Output Waveform and Phase Relationship
