Wavetek 143 - Page 16

example. Example 2 shows that with a positive VCG input,
output frequency is increased. Example 3 shows that with a
negative VCG input, output frequency is decreased. (Note
that the Output Frequency Factor column value must be
multiplied by a frequency range multiplier to give the actual
output frequency.)
NOTE
The frequency vernier must be rotated fully
ccw for 1000:1 range.
Nonlinear operation results when the VCG input
voltage is excessive; that is, when the attempted
generator frequency exceeds the range setting
TRIG IN (GATE MODE)
GENERATOR BASIC “\,
WAVEFORM (NOT OUTPUT)
GENERATOR BASIC Ч
WAVEFORM (NOT OUTPUT)
SYNC OUT
AV, OFFSET
fN. OFFSET
FUNCTION
—
+DC
Шог
N
ANC
NH
I
ov i
!
т NG
— DC OFFSET |
(2 times the multiplier setting) or in the other
direction, 1/1000th of the range setting.
The up to 1000:1 VCG sweep of the generator frequencies
available in each range results from a 2V excursion at the
VCG IN connector. With the frequency dial set to 2.0, ex-
cursions between —2V and OV at VCG IN provide the up to
1000:1 frequency sweep. With the dial set to .002, excur-
sions between OV and +2V at VCG IN provide the up to
1000:1 sweep within the set frequency range.
3.2.3 Waveforms
See figure 3-5 for definition of controllable waveform
characteristics.
TRIGGER LEVEL
«ο RE BS 155
E |— PERIOD
OUTPUT AMPLIFIER FIXED DELAY —| |<
AMPLITUDE
OUT n, ov— | | | | |
u EE
TRIGGERED /\, START/STOP:
NOTES
0° +45° +90° —90?
΄
2 Period is controlled by the generator frequency setting.
2. In trigger mode, just one period is generated for each trigger pulse.
et DC offset plus peak waveform voltage > | 7.5V | causes waveform clipping.
Figure 3-5. Waveform Characteristics
3-4