12
User Manual
5076 / SM5076-1
SM
First Time Operation
Function Selection
Frequency Adjustment
Output Amplitude And Signal Connection
After unpacking the instrument check for any mechanical damages. The
instrument should be plugged in mains-plug of proper mains supply 230 V ± 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 3 different waveforms - sine, square and triangle are available. The
functions are marked with the corresponding symbols. If the
"OFFSET
pushbutton
is activated a DC voltage level is supplied by the
5076 &
or 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 5-digit display
Compared to knob scales, this display has a much higher
resolution.
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 pushbuttons.
Including the continuously adjust able AMPLITUDE control
, the maximum
SM
SM5076-1
attenuation amounts to -60 dB. With the maximum amplitude of 10 V , 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. In high signal voltage ranges it should be noted that the used
terminating resistor must dissipate the corresponding effective power.
If the output of the
unit comes into contact with
components of the circuit under test, which are carrying DC voltage, an isolating
capacitor of appropriate dielectric strength should be connected in series with the
pp
pp
W
W
W
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The output terminal of the
is short circuit proof.
SM5076 & SM5076-1
SM5076 & SM5076-1
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12
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