APPENDIX 
  53 
Specification 
Output Function  Sine, Square, Triangle 
Amplitude Range 
10Vp-p (into 50Ω load) 
Impedance 
50Ω ± 10% 
Attenuator 
−20dB ± 1dB x2 
DC Offset  < −5V ~ >+5V (50Ω load) 
Duty Range  20% ~ 80%, 2Hz~1MHz (Square Wave) 
Duty Resolution  1% (Square Wave Only) 
Main 
Display  9 digits LED display 
SFG-2004  0.1Hz ~ 4MHz 
SFG-2007  0.1Hz ~ 7MHz 
SFG-2010  0.1Hz ~ 10MHz 
SFG-2020  1Hz ~ 20MHz 
SFG-2104  0.1Hz ~ 4MHz 
SFG-2107  0.1Hz ~ 7MHz 
SFG-2110  0.1Hz ~ 10MHz 
Sine/Square 
Waveform Range 
SFG-2120  1Hz ~ 20MHz 
Triangle 
Waveform Range 
0.1Hz ~ 1MHz 
(1Hz ~ 1MHz for SFG-2020/2120) 
Resolution  0.1Hz (1Hz for SFG-2020/2120) 
Stability ±20ppm 
Accuracy  ±20ppm 
Frequency 
Aging ±5ppm/year 
Harmonic 
Distortion 
≥−55dBc, 0.1Hz ~ 200kHz 
≥−40dBc, 0.2MHz ~ 4MHz 
≥−30dBc, 4MHz ~ 20MHz 
(Amplitude at maximum position 
without attenuating 1/10 of any 
combination setting, TTL/CMOS off) 
Sine Wave 
Flatness 
< ± 0.3dB, 0.1Hz ~ 1MHz 
< ± 0.5dB, 1MHz ~ 4MHz 
< ± 2dB, 4MHz ~ 10MHz 
< ± 3dB, 10MHz ~ 20MHz 
(At the max amplitude relating to 1kHz) 
Triangle Wave 
Linearity 
≥ 98%, 0.1Hz ~ 100kHz 
≥ 95%, 100kHz ~ 1MHz 
 
Symmetry  ±1% of period + 4ns, 0.1Hz ~ 100kHz 
Square Wave 
Rise/Fall Time  ≤ 25ns at maximum output (50Ω load) 
 
Level  4 ± 1Vpp ~ 15 ± 1Vpp, adjustable 
CMOS Output 
Rise/Fall Time 
≤ 120ns 
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