Pseudo Voice Generator
KSG3600
640,000円 （税込：704,000円）
- Equipped with white noise generator and characteristic filter of ITU-T recommendation G.227 (characteristic filter can be turned on/off)
- Ideal for measuring occupied bandwidth and spurious emission strength in modulated state of AM and SSB radios.
- Pseudo-speech generator with built-in attenuator
- Low frequency generation for modulation is possible. Frequency points are 900Hz, 1000Hz, 1250Hz, 1500Hz
- Good S/N at balanced and small signal output (Noise resistant measurement is possible by connecting the signal output with differential)
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Product Overview
All-in-one package of audio signal generators for testing analog radios
The KSG3600 is a signal generator that can be used as a pseudo-speech source for the measurement of speech leakage in communication circuits or between call paths, etc. It generates a pseudo-speech spectrum using the characteristic filter (digital filter) of ITU-T recommendation G.227. The noise signal source is an M-sequence pseudo-random signal, which is the maximum length series using DSP. It generates stable pseudo-white noise, which is difficult to generate with analog circuits. The sine wave signal is generated by an NCO (numerically controlled oscillator).
Specifications
Electrical specifications
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| Noise generation system | Pseudorandom bit sequence (PRBS) M sequence | |
|---|---|---|
| Generator polynomial | x31+x30+x24+x16+1 | |
| Sampling frequency (Fs) | 500 kHz | |
| Maximum period | Tp=(231 – 1)/Fs = 4294.967 s | |
| Bandwidth limit filter | 4th order Butterworth LPF fc = 48 kHz | |
| Pseudo voice filter | Standard | Complies with ITU-T Recommendation G.227. |
| Spectral tolerance | Within ±1 dB (100 Hz to 10 kHz) | |
| Within ±3 dB (30 Hz to 20 kHz) | ||
| Output Level | Variable range | ー 70 dBm*1(245 μVrms)～ 1.0 dBm (869 mVrms) (at 600 Ω termination) |
| Resolution | 0.1 dB | |
| Accuracy | Within ±2 dB (-70 dBm to 0 dBm) | |
| Display item | Output Level | -70.0 dBm to 1.0 dBm (1 mW, 600 Ω) |
| Output Impedance | 600 Ω balanced (BNC) | |
*1 dBm: 600 Ω termination, 1 mW = 0 dBm
General Specifications
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| Power supply | Nominal voltage range (Allowable voltage range) | 100 Vac to 240 Vac. (90 Vac to 250 Vac). |
|---|---|---|
| Power consumption | 30 VA or less. | |
| Nominal frequency range (Allowable frequency range) | 50 Hz to 60 Hz. (45 Hz to 65 Hz). | |
| Insulation resistance | Between AC line and chassis | 100 M or more at 500 Vdc. |
| Withstanding voltage | Between AC line and chassis | 1 500 Vac for 1 minute. |
| Ground bond | 25 Aac/0.1 Ω or less | |
| Electromagnetic Compatibility (EMC)*2 | Complies with the requirements of the standard below. EN 61326 Applicable condition All of the wires and wires connected to the KSG3600 are less than 3 m in length. | |
| Safety *2 | Complies with the requirements of the standard below. EN 61010-1 Class I Pollution Degree2 | |
| Environment | Operating environment | Indoor use, Overvoltage Category II. |
| Operable range | 0 C to 40 C, 0 % rh to 80 %rh (no condensation). | |
| Temperature and humidity range for guaranteed specifications | 23 C±5 C, 0 % rh to 80 %rh (no condensation). | |
| Storage range | -20 C to 70 C, 0 % rh to 90 %rh (no condensation). | |
| Altitude | Up to 2000 m | |
| Dimensions | 280(285) W × 44(60) H × 270(330)D mm | |
| Weight | Approx. 3 kg (6.61 lb) | |
| Accessories | Power cord | SVT3 18AWG: 1 pc. With plug Cord length: Approx. 2.5 m. |
| Operation Manuals | 1 copy | |
| BNC-banana plug cable | 1 pc. Cord length: 1 m. | |
| Spare fuse *3 | 1 pc | |
*2 Not applicable to custom order models.*3 Provided inside the KSG3600.
2D CAD
KSG3600
