First Time Operation
Function Selection
S 5070/
SM5071
Frequency Adjustment
Output Amplitude and Signal Connections
After unpacking the instrument check for any mechanical damages. The
instrument should be plugged in mains-plug of proper mains supply 230V
10%.
On switch ON no undue observation should be noticed. Once the instrument is
switched ON, the power ON is indicated by liting of displays.
The type of output signal is selected with the function selection switch . A total
number of 4 different waveforms - sine, square, triangle are available apart from the
DC level. The functions are marked with the corresponding symbols. If the
"OFFSET” pushbutton is activated a DC voltage level is supplied by the
is superimposed on the output signal.
Coarse adjustment is performed with the range keys. The desired frequency is
selected by turning the FREQUENCY control
.
The selected frequency appears on the LCD display. Compared to knob scales,
this display has a much higher resolution and accuracy.
Adaptation in decade steps to the desired amplitude range is performed by the use
of two attenuators with -20 dB each, which are activated by push buttons &
Including the continuously adjustable AMPLITUDE control the maximum
attenuation amounts to –60 dB. With the maximum amplitude of 10V , the
minimum signal voltage to be supplied is about 10 mV. These values are obtained
when the generator output is terminated with 50 . In the open-circuit condition, the
available signal amplitude is twice as high. Therefore the maximum output voltage
of the output socket is specified with 20 V .
If exact square-shaped signals are required, care should be taken that only 50
coaxial cables are used. Furthermore, this cable must be terminated with a 50
through termination. If these precautions are not observed, overshoot may occur,
especially when high frequencies are selected. If test circuits having a 50
input
impedance are connected, this termination is not required.
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SM5070/ SM5071 User Manual
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