Introduction：
SG 9301 is a spectrum generator and reference signal source produced by Schwarzbeck, Germany and authorized to be sold by Shenzhen EUTTEST. When used in spectrum generator mode, you can directly connect the output of this generator to the receiver for testing; when used in reference signal source mode, you need to connect the output of this generator to an external antenna such as UBAA 9114 + BBVU 9135 to calibrate the free space attenuation for reference. This spectrum generator is a member of the family of SchwarzBecker pulse generators, which are recognized as pulse standard equipment by users worldwide. Obviously, this generator is compatible with IGUF 2910 Both are spectrum generators. The difference is that the IGUF 2910 uses non-bouncing relay contacts to discharge coax to the load resistor, but the SG 9301 uses special avalanche transistors instead of relay contacts.
Configuration for free space attenuation testing with UBAA 9114 and BBUK 9139
Calculation of free space attenuation
Technical parameters：
<<<<提醒：左右滑动表格>>>>| Model number | SG 9301 |
| manufacturer | Schwarzbeck |
| agent | EUTTEST |
| test pattern | Spectrum generator reference signal source |
| Pulse voltage output through 50Ω load | 24V |
| pulse width | 0.75ns |
| Pulse voltage spectrum data | table below |
The following table shows the pulse voltage spectrum data output from this generator through a 50Ω load.
<<<<提醒：左右滑动表格>>>>| Frequency MHz | Voltage dBμV |
| 1 | 95 |
| 2 | 95 |
| 3 | 94.2 |
| 5 | 92.6 |
| 10 | 89.5 |
| 20 | 90.3 |
| 30 | 90 |
| 50 | 89 |
| 100 | 89 |
| 200 | 88.5 |
| 300 | 88 |
| 400 | 86.3 |
| 500 | 84.9 |
| 600 | 83.8 |
| 700 | 81.3 |
| 800 | 79 |
| 900 | 76.2 |
| 1000 | 73.8 |
Graph of related technical parameters：
Time domain output voltage waveform
Spectrogram of the measurement when setting the RBW of the receiver to 3 kHz
