| 
  SFG-1000 
 Series, an economic function generator with high accuracy and high 
 stability output, is  designed based on the DDS (Direct Digital 
 Synthesized) technology embedded in a large scale FPGA.  The frequency 
 range of 3MHz and the output waveform selection of Sine, Square, Triangle 
 and TTL of  SFG-1000 Series adequately provide the fundamental features 
 to ensure high confidence for the test  results. The DDS technology at 
 an affordable price gives a high value solution to the users who need a 
  signal source for accurate but unsophisticated measurement 
 applications.   | 
 
 | 
  MAIN  | 
 
 | 
  Output 
 Function  | 
 
  Sine, 
 Square, Triangle  | 
 
 | 
  Frequency 
 Range (For Sine, Square)  | 
 
  0.1Hz~3MHz  | 
 
 | 
  Frequency 
 Range (For Triangle)  | 
 
  0.1Hz~1MHz  | 
 
 | 
     | 
 
  0.1Hz 
 Maximum  | 
 
 | 
  Frequency 
 Stability  | 
 
  ∮ 20 ppm  | 
 
 | 
  Frequency 
 Accuracy  | 
 
  ∮ 20 ppm 
   | 
 
 | 
  Frequency 
 Aging   | 
 
  ∮ 5 ppm / 
 year  | 
 
 | 
  Amplitude 
 Range  | 
 
  10Vp-p 
 (into 50?load)  | 
 
 | 
     | 
 
  ∮20% at 
 maximum position  | 
 
 | 
  Impedance  | 
 
  50?∮10?  | 
 
 | 
  Attenuator  | 
 
  -40dB∮1dB⊙1  | 
 
 | 
  DC 
 Offset  | 
 
  ≌-5V°≈+5V(into 
 50?load)   | 
 
 | 
  Duty 
 Control Range   | 
 
  25% to 
 75% below 1MHz (Square wave only)   | 
 
 | 
  Display  | 
 
  6-digit 
 LED display   | 
 
 | 
  Output 
 Control  | 
 
  ON/OFF 
 selector  | 
 
 | 
  SINE WAVE  | 
 
 | 
  Harmonics 
 Distortion  | 
 
  From 
 Amplitude control at maximum position without any attenuation to  its 
 1/10 of any combination setting, TTL OFF -55dBc, 0.1Hz ~ 
 200kHz -40dBc, 0.2MHz ~ 2MHz -35dBc, 2MHz ~ 3MHz 
   | 
 
 | 
  Flatness 
  (at maximum amplitude relative to 1kHz)  | 
 
  ≌∮0.3dB, 
 0.1Hz ~ 1MHz ≌∮0.5dB, 
 1MHz ~ 2MHz ≌∮ 1dB, 
 2MHz ~ 3MHz   | 
 
 | 
  TRIANGLE 
 WAVE  | 
 
 | 
  Linear  | 
 ≠98?,0.1Hz°100kHz;≠95?,100kHz°1MHz 
   | 
 
 | 
  PSQUARE 
 WAVE  | 
 
 | 
  Symmetry  | 
 
  5% of 
 period +4ns to 0.1Hz°100kHz   | 
 
 | 
  Rise or 
 Fall Time  | 
 
  ∝100ns at 
 maximum output. (into 50?load)  | 
 
 | 
  TTL 
 OUTPUT  | 
 
 | 
  Level  | 
 ≠3Vpp  | 
 
 | 
  Fan 
 Out  | 
 20 TTL 
 load  | 
 
 | 
  Rise or 
 Fall Time  | 
 
  ∝25ns  | 
 
 | 
  General  | 
 
 | 
  Operation 
 Environment  | 
 
  Indoor 
 use, altitude up ~ 2000m Ambient Temperature 0? ~ 40? Relative 
 Humidity: Up to 80% at 0~ 40? Up to 70% at 35? ~ 40? Installation 
 category II Pollution Degree 2   | 
 
 | 
  POWER 
 SOURCE  | 
 
 
 | 
     | 
 
  AC 
 240V/220V/110V∮10%, 
 50/60Hz   | 
 
 | 
  STORAGE 
 CONDITION  | 
 
 | 
  Temperature 
   | 
 
  -10? ~ 
 70?  | 
 
 | 
  Humidity  | 
 
  70% 
 (Maximum)  | 
 
 | 
  ACCESSORIES 
   | 
 
 | 
     | 
 
  User 
 manual ⊙ 
 1 Power Cord x 1 GTL-101⊙ 
 1  | 
 
 | 
  DIMENSION 
 & WEIGHT  | 
 
  251(W)⊙91(H)⊙291(D) 
 mm Approx. 2.1kg  |