JS-803-A Series

  • LCD Display 16 character by 1 line shows frequency, voltage 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 3 Hz to 3 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.

Signal Generator Model JS-803-A is a high performance unit built using state of the art techniques. The LCD display shows the output frequency and amplitude with good calibration accuracy as also output waveform type. Sine, Square, Triangular and Pulse wave forms are available. The impressive performance and low cost makes it ideally suited for service, educational and industrial applications. The digital architecture of DDS eliminates frequency drift due to component ageing and temperature variation.

TECHNICAL SPECIFICATIONS

MODEL JS-803-A
 WAVE FORMS  Sine   3 Hz to 3 MHz
 Square   3 Hz to 3 MHz
 Triangle   3 Hz to 300 KHz
 Pulse   3 Hz to 3 MHz
 Selection   push button switch
 
 FREQUENCY  Readout   3½ digits LCD display with direct display in Hz, KHz, MHz
 Accuracy   3% < 6 Hz
    2% - 6 Hz - 15 Hz
    1% - 15 Hz - 30 Hz
    0.5% - 30 Hz - 150 Hz
    0.1% > 150 Hz
 Selection   2 nos. push button switches with separate fine control
 
 VOLTAGE  Readout   3 ½ digits with direct display in V, mV
 Accuracy   ±4% at 0 dB attenuation. Add 1% for every 20dB of attenuation
 
 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 3 Hz to 300 KHz
 
 ATTENUATOR  Attenuation   0 dB, 20 dB, 40 dB, 60 dB
 Selection   two station push button switch
 
 SINE OUTPUT  Distortion   0.5% max @ 20V pk-pk, 0.2% max @ 2V pk-pk (Fo=10KHz)
 
 SQUARE OUTPUT  Rise & Fall time   < 50 nsec
 
 TRIANGLE OUTPUT  Linearity error   0.2% (Fo = 15 KHz, 5% to 95%)
 
 PULSE OUTPUT  Rise & Fall time   < 50 nsec
 Duty cycle variation   10% to 90% , 25% to 75% in Highest Frequency Range
 
 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   BNC to crocodile cable & Operating manual