In high signal voltage ranges it should be noted that the used terminating resistor
must dissipate the corresponding effective power.
The output terminal of the
is short circuit proof. 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 output of the generator. The
capacitance of this isolating capacitor should be selected in such way that the
frequency response of the output signal is not affected over the whole frequency
range of the
unit.
In the sine, square and triangle modes, the trigger output (at back panel) supplies a
square signal in synchronism with the output signal. Set up time is considerably
reduced because the fixed logic levels and polarity are ready for direct injection
into any TTL circuits. An offset voltage adjusted at the 50
output has no influence
upon the trigger signal. The trigger output is short-circuit proof and can drive
several TTL inputs.
The internal sweep facility of the
allows checking of filters and
equipment in the frequency range from 0.3 Hz to 3 MHz. Operation is very easy
and is confined to the setting of sweep-speed and sweep-width. Activation is by
simply pressing the
push button and can be combined with all available
functions on the
The Stop- frequency is automatically given by
the settings of the range selector and the frequency dial and is shown on the LCD
display. Start frequency is related to the stop-frequency by the sweep-width factor.
Latter is set by means of the (Sweep) Width potentiometer and is up to approx. X
l00.The sweep speed is set by means of the (Sweep) Speed potentiometer and
ranges from 20 ms to 4 s. For external wobbulation please refer to "FM input".
If a positive DC voltage is applied to the FM input on the rear BNC of
, the generator frequency increases and is accordingly displayed. A
negative DC voltage reduces the frequency. The frequency displacement depends
S 5070/ SM5071
SM5070/SM5071
SM5070/SM5071
Trigger Output
Sweep Facilities
Internal Sweep
S 5070/ SM5071
SWEEP
S 5070/ SM5071.
FM input
S 5070/
5071
M
M
M
M
SM
W
14
SM 070/ SM5071 U
5
ser Manual
