On Mon, Mar 18, 2019 at 10:12 PM, @0culus wrote:
On Mon, Mar 18, 2019 at 07:50 PM, Noel VK3NH wrote:
Sean,
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If you only drive the output at 10dBm then it should be very accurate in level.? Mine only had that issue above 2.8GHz.
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Usually you get an ALC unlock error message if the requested level cannot be reached.
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Regards Noel
(also answering amirb here)
OK I have it up stacked with my 8566A so I can play with things more easily now. It looks like the amplitude setting is pretty much bang on below 2.5 GHz. Above that to 3 GHz, if say it's set to 0 dBm, it's around 3-5 dBm low, with the lowest areas being around 2.5-2.55 GHz. No ALC unlock message showing, or any error message starting with 5.
Sean
OK, some of the losses are definitely from the BNC cable arrangement I was using. I switched to two short SMA cables connected together (the best I have till I can get my order to mini-circuits in), and gained about 3 dB over what I was seeing before. Granted, it doesn't account for all of the missing amplitude, but it was *definitely* contributing.
Sean
