JS-900 Series

  • Sine , Square, Triangular and Pulse Waveforms.
  • LCD Display 16 character by 1 line shows frequency & output waveform
  • Wide Frequency range : 1 Hz to 1 MHz, 2 Hz to 2 MHz, 3 Hz to 3 MHz in three separate models
  • Direct Digital Synthesizer IC based design with crystal oscillator gives exceptional frequency accuracy
  • Low phase noise and good spurious performance
  • Variable DC offset facility with offset enable
  • Standard 50 ohms output impedance
  • Compace size enables space saving
  • Low distortion sine wave output

J S Instruments Signal Generator Model JS-901 is a low cost unit built using state of the art techniques. The LCD display directly displays the output frequency with good calibration accuracy as also output waveform type. Sine, Square, Triangular and Pulse wave forms are available. The digital architecture of DDS eliminates frequency drift due to component ageing and temperature variation.

The impressive performance and low cost makes it ideally suited for service, educational, industrial and biomedical applications. The front panel controls are all pushbuttons and knobs and ergonomically arranged for ease of operation. The output signal can be conveniently limited to -20 dB, -40 dB or -60 dB by fixed attenuator. The instrument is compact, rugged and lightweight.

TECHNICAL SPECIFICATIONS

 
MODEL
 JS-901
 JS-902
 JS-903
  WAVE FORMS  Sine  1 Hz to 1 MHz  2 Hz to 2 MHz  3 Hz to 3 MHz
 Square  1 Hz to 1 MHz  2 Hz to 2 MHz  3 Hz to 3 MHz
 Triangle  1 Hz to 0.5 MHz  2 Hz to 0.5 MHz  3 Hz to 0.5 MHz
 Pulse  1 Hz to 1 MHz  2 Hz to 2 MHz  3 Hz to 3 MHz
 Selection  push button switch
 
 FREQUENCY  Readout  3½ digits LCD display with direct display in Hz, KHz, MHz
 Accuracy  9% < 2 Hz    
 4% - 2 Hz - 5 Hz  4% - 2 Hz - 5 Hz  4% - 3 Hz - 5 Hz
 2% - 5 Hz - 10 Hz  2% - 5 Hz - 10 Hz  2% - 5 Hz - 10 Hz
 0.8% - 10 Hz  - 100   Hz  0.8% - 10 Hz  - 100 Hz  0.8% - 10 Hz  - 100 Hz
 0.1% > 100 Hz  0.1% > 100 Hz  0.1% > 100 Hz
 Selection  2 nos. push button switches with separate fine control  
 
 OUTPUT  Socket  BNC
 Amplitude  20 volts pk-pk
 Impedance  50 ohm
 Offset with enable  ± 5V continuously adjustable, attenuated by step attenuator
 Level flatness  ± 2% from 1 Hz to 100 KHz  ± 2% from 2 Hz to 200 KHz  ± 2% from 3 Hz to 300 KHz
 
 ATTENUATOR  Attenuation  0 dB, 20 dB, 40 dB, 60 dB
 Selection  two station push button switch
 
 SINE OUTPUT  Distortion  0.6% max @ 20V pk-pk, 0.3% max @ 2V pk-pk (Fo = 10 KHz)
 
 SQUARE OUTPUT  Rise & Fall time  < 100 nsec  < 70 nsec  < 60 nsec
 
 TRIANGLE OUTPUT  Linearity error  0.2% (Fo = 10 KHz, 5% to 95%)
 
 PULSE OUTPUT  Rise & Fall time  < 100 nsec  < 70 nsec  < 60 nsec
 Duty cycle variation  15% to 85%
 
 GENERAL  Operating Temp.  0 to 50°C (Accuracy specified at 25°C)
 Power  230 V AC ±10%, 50 Hz, 5 VA
 Dimensions  215 mm (W) x 85 mm (H) x 205 mm (D)
 Weight  1.8 Kg approx.
 Accessories  Operating manual