Werbung
Verfügbare Sprachen
Verfügbare Sprachen
2.2.3.
2.2.4.
11
Duty
cycle
Wave form]
015 215%
| 0,5 = 50%
eat
|
+O
orf
OF
pee
|
'
+0
|
N
0
!
a0)
46
mh
0
!
MAS033
Fig. 4. Duty cycle of the different signals
Setting the frequency
The frequency is adjustable by the use of three separate controls:
1. FREQUENCY
dial, with linear scale
2. Frequency-range selector, FREQUENCY
Hz
3. Frequency-offset control, FREQ OFFSET
The nominal! frequency is adjusted by means of the FREQUENCY
dial and frequency-range selector
(FREQUENCY
Hz), with the FREQ OFFSET control remaining in mid-position.
The output frequency equals the product of the value on the FREQUENCY
linear dial and the value of the
selected frequency-range switch (e.g. FREQUENCY dial setting 1.9 x range switch 10 k = 19 KHz output
frequency).
A detuning of —5 ... +5 % of the nominal frequency can be performed with the FREQ OFFSET control.
Setting the amplitude and d.c. offset
The signal amplitude at the OUTPUT BNC-socket is continuously variable from an open-circuit voltage of
2 Vp-p up to 30 Vp-p by means of the AMPLITUDE
control.
A d.c. voltage can be added to the output signal by operation of the DC OFFSET pushbutton and rotation of
the DC OFFSET potentiometer. The DC OFFSET potentiometer provides continuous adjustment of the
d.c. offset-voltage between —10 V and +10 V (open-circuit).
The output signal, and the d.c. offset-voltage if selected, can be attenuated by 20, 40 or 60 dB by selecting
the relevant ATTENUATION
pushbutton.
Caution: By simultaneous control of AMPLITUDE
and DC OFFSET the output amplifier can be overloaded.
in order to guarantee the quality of the output signal therefore, the output open-circuit voltage
must not exceed + 15 V when the step attenuator is set at 0 dB. The limit decreases linearly with the
attenuation selected.
Werbung
