GW Instek SFG-2000 Series - Manual (Page 15)

SINE/SQUARE/TRIANGLE WAVE
29
Set Amplitude
Normal
output
ADJ
−20dB
AMPL Turn the Amplitude knob right
(increase) or left (decrease).
The range is 10Vpp for 50Ω load.
Attenuate by
−20dB
Sine/square/triangle waveform can be attenuated by
−20dB, in two ways: −40dB altogether.
Method1
Pull out the Amplitude knob. The
output amplitude is attenuated by
−20dB (no display sign).
−20dB
8
Method2
Press the shift key, then 8. The output
amplitude is attenuated by −20dB. The
−20dB sign appears on the display.
SFG-2000 Series User Manual
30
Set Offset
SFG can add or delete offset to the sine/square/triangle
waveform, thus changing the waveform vertical position.
Use the OFFSET knob.
Activate
offset
Pushed: Offset Off
Pulled: Offset On
Adjust offset
CAL
ADJ
OFFSET
-
+
Turn the knob right (higher position)
or left (lower position).
The range is −5V ~ +5V for 50Ω
load.
Limitation
Note that the output amplitude, including the offset, is
still limited to:
−5 ~ +5V (50Ω load)
−10 ~ +10V (no load)
Therefore excessive offset leads to peak clip as below.
Positive peak
clip (50Ω)
+5V
-5V
Offset
Clipped
Negative peak
clip (50Ω) +5V
-5V
Offset
Clipped