JS-800 Series

  • LCD Display 16 character by 1 line shows frequency and output waveform.
  • Sine, Square, Triangular and Pulse Wave forms.
  • Direct Digital Synthesizer IC based design with crystal oscillator gives exceptional frequency accuracy.
  • High frequency active filter used to get low distortion sine wave.
  • Wide frequency range from 1 Hz to 1 MHz with low phase noise and good spurious performance.
  • Variable DC offset facility with ON/OFF control.
  • Output amplifier protected against short circuit and 15V overload.
  • Standard 50 ohms output impedance.
  • Compact size enables space saving.

J S Instruments Signal Generator Model JS-801 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-801
 JS-802
 JS-803
 JS-805
 JS-810
 WAVE FORMS  Sine   1 Hz to 1 MHz   2 Hz to 2 MHz   3 Hz to 3 MHz   5 Hz to 5 MHz   10 Hz to 10 MHz
 Square   1 Hz to 1 MHz   2 Hz to 2 MHz   3 Hz to 3 MHz   5 Hz to 5 MHz   10 Hz to 5 MHz
 Triangle   1 Hz to 100 KHz   2 Hz to 200 KHz   3 Hz to 300 KHz   5 Hz to 500 KHz   10 Hz to 1 MHz
 Pulse   1 Hz to 1 MHz   2 Hz to 2 MHz   3 Hz to 3 MHz   5 Hz to 5 MHz   10 Hz to 5 MHz
 Selection   push button switch
 
 FREQUENCY  Readout   3½ digits LCD display with direct display in Hz, KHz, MHz
 Accuracy   3% < 2 Hz   3% < 4 Hz   3% < 6 Hz   3% < 10 Hz   3% < 20 Hz
    2% - 2 Hz - 5 Hz   2% - 4 Hz - 10 Hz   2% - 6 Hz - 15 Hz   2% - 10 Hz - 25 Hz   2% - 20 Hz - 50 Hz
    1% - 5 Hz - 10 Hz   1% - 10 Hz - 20 Hz   1% - 15 Hz - 30 Hz   1% - 25 Hz - 50 Hz   1% - 50 Hz - 100 Hz
  0.5% - 10 Hz - 50 Hz 0.5% - 20 Hz - 100 Hz 0.5% - 30 Hz - 150 Hz 0.5% - 50 Hz - 250 Hz 0.5% -100 Hz -500Hz
    0.1% > 50 Hz   0.1% > 100 Hz   0.1% > 150 Hz   0.1% > 250 Hz   0.1% > 500 Hz
 Selection   2 nos. push button switches with separate fine control
 
 OUTPUT  Socket  BNC
 Amplitude  20 volts pk-pk
 Impedance  50 ohm
 Protection  Output Amplifier protected for short circuit &  ±15V overload
 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 ± 2% from 5 Hz to 500 KHz ± 2% from 10 Hz to   1 MHz
 
 ATTENUATOR  Attenuation  0 dB, 20 dB, 40 dB, 60 dB
 Selection  two station push button switch
 
 SINE OUTPUT  Distortion  0.5% max @ 20V pk-pk, 0.1% max @ 2V pk-pk
 
SQUARE OUTPUT  Rise & Fall time  < 80 nsec  < 70 nsec  < 60 nsec  < 40 nsec  < 30 nsec
 
TRIANGLE OUTPUT  Linearity error  0.2% (Fo = 10 KHz, 5% to 95%)
 
 PULSE OUTPUT   Rise & Fall time   < 80 nsec   < 70 nsec   < 60 nsec   < 40 nsec   < 30 nsec
Duty cycle variation   10% to 90%
 
 GENERAL   Operating   Temp.   0 to 50°C (Accuracy specified at 25°C)
 Power   230 V AC ±10%, 50 Hz, 5 VA   230 V AC ±10%, 50 Hz, 10 VA
 Dimensions   215 mm (W) x 85 mm (H) x 205 mm (D)
 Weight   1.8 Kg approx.   2.0 Kg approx.
 Accessories   BNC to crocodile cable & Operating manual