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| WB-SG1 wide band generator |
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| Grandchuck:
This unit just arrived so needs more testing. As a preliminary report, all seems to work as expected. Amplitude accuracy is nothing to rave about but is acceptable; the frequency accuracy is very good. The operation range of frequencies is as advertised. Channel 2 can be modulated by Channel 1, as shown below. |
| Diabolo:
Hello, Ok. The CH1 frequency of 100 kHz will modulate the CH2 frequency (1080 MHz) by this value (100 kHz) if the "MOD" function of CH2 is ON. The WB-SGI generator is sold +/- 145 $ / 135 € on Aliexpress, or Ebay. Serious seller and fast shipping. - https://fr.aliexpress.com/item/4000468601984.html?spm=a2g0w.12010615.8148356.22.11f0d5c7pfHHq1 ------ The name WB-SG1 would suggest that a version # 2 "WB-SG2" could appear with all the options that are absent on the WB-SG1, but it would be more expensive to buy. The FA-1 frequency counter was followed by the FA-2 frequency counter. Diabolo |
| Diabolo:
Hello, It would be interesting to see the level of harmonics with a spectrum analyzer that I do not have available. If anyone could make these measurements they would be welcome. ---- What about an FM modulated signal on CH2 ? For example, a fundamental signal modulated in FM with a deviation of 25 kHz is not likely to resemble an FM signal with a deviation of 100 kHz. Regards Diabolo |
| Grandchuck:
Here is the spectrum of channel 2 from 35 MHz to 1.5 GHz. How does one obtain FM? |
| Diabolo:
Thank you for the answer. ----- The manual says that CH2 modulated by frequency CH1 is a CH2 signal modulated in FM. Diabolo |
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