JS-703 3 MHz Modulation Signal Generator
J S Instruments signal generator model JS-703 is suited for analog and digital communication laboratory. Basic to advanced modulation types are available which will enable the students to understand the theoretical concepts. Unlike standalone kits there is no restriction on the frequency or amplitude of output waveform. The TFT display shows lots of information including the constellation diagram.
- Basic to advanced modulation types
- 320 x 240 colour TFT display for optimum viewing
- Carrier frequency ranging from 3 Hz to 3 MHz
- 4 digit Frequency read-out with automatic decimal point selection
- Output amplifier protected against short circuit and ±15V overload.
- Voltage range 2 mV to 20 volts pk-pk
- Using DDS technology gives low phase noise signal
- Modulation frequency from 1 Hz to 20 KHz
- Plot of Constellation diagram as also data stream
- Well suited for Educational Institutes, R&D laboratories
TECHNICAL SPECIFICATIONS
| Frequency Accuracy |
Carrier |
Modulation/Clock |
| 3% < 6 Hz |
0.5% < 2 Hz |
| 2% - 6 Hz to 15 Hz |
0.3% - 2 Hz to 3 Hz |
| 1% - 15 Hz to 30 Hz |
0.2% - 3 Hz to 4 Hz |
| 0.5% - 30 Hz to 150 Hz |
0.15% - 4 Hz to 10 Hz |
| 0.1% > 150 Hz |
0.1% > 10 Hz |
| Frequency Indication |
4 digit with direct display in Hz, KHz or MHz |
| Output |
Socket - BNC
Amplitude - 20 V p-p with 50 ohm impedance |
| Attenuator Switches |
0 dB, 20 dB, 40 dB, 60 dB |
| Level Flatness |
±2% from 3 Hz to 300 KHz |
| Sine Wave Distortion |
0.5% maximum at 20 V p-p
0.1% maximum at 2 V p-p (Fo = 10 KHz) |
| Power |
230 V AC ±10%, 50 Hz, 9VA max. |
| Dimensions |
250 mm (W) x 120 mm (H) x 200 mm (D) |
| AM DOUBLE SIDE BAND WITH CARRIER |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
Sine |
| Modulating Frequency |
1 Hz to 20 KHz |
| Modulation Percentage |
0% to 100% |
| AM DOUBLE SIDE BAND SUPPRESSED CARRIER |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
Sine |
| Modulating Frequency |
1 Hz to 20 KHz |
| Modulation Level |
0% to 100% |
| FREQUENCY MODULATION |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
Sine |
| Modulating Frequency |
200 Hz to 2 KHz, in 50 Hz steps |
| Deviation |
100 Hz to 5 KHz |
| AMPLITUDE SHIFT KEYING |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random bit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| Amplitude Level |
0% to 100% |
| FREQUENCY SHIFT KEYING |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random bit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| PHASE SHIFT KEYING |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random bit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| Phase Range |
0 to 359 degrees |
| DIFFERENTIAL PHASE SHIFT KEYING |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random bit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| Phase Range |
0 to 359 degrees |
| QUADRATURE PHASE SHIFT KEYING |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random dibit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| OFFSET QUADRATURE PHASE SHIFT KEYING |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random dibit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| PI/4 QUADRATURE PHASE SHIFT KEYING |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random dibit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| DIFFERENTIAL QUADRATURE PHASE SHIFT KEYING |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random dibit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| 8 QUADRATURE AMPLITUDE MODULATION |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random tribit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| 8 PHASE SHIFT KEYING |
Carrier Waveform |
Sine |
| Carrier Frequency |
3 Hz to 3 MHz |
| Modulating Waveform |
4 to 8 bit user selectable or random tribit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| LINE CODE |
Carrier Waveform |
Square |
| Carrier Frequency |
same as clock |
| Modulating Waveform |
4 to 8 bit user selectable or random bit stream |
| Clock Frequency |
1 Hz to 20 KHz |
| Types |
Unipolar NRZ
Unipolar RZ
Polar NRZ
Polar RZ
Bipolar NRZ
Bipolar RZ
Manchester NRZ |