¿ªÔÆÌåÓýI¡¯ve posted the information related to the frequency response change for the 535x series a couple of years ago but to sum it up again, You do have to change the switch/jumper position AND you have to change the value of the 1/8W resistor closest to the sampler from what it is currently is to 287K.? After that your counter will count to 40-46GHz at the input to the sampler itself.? While the samplers do have different part numbers, I¡¯ve yet to find any of them that won¡¯t make it to 40GHz at the minimum. ? HP offered option 05 (46GHz) and all it had was a 2.4mm connector & cable.? The cable was 2.4mm on one side and SMA on the other. ? Richard Parrish ? From: [email protected] [mailto:[email protected]] On Behalf Of donald collie ? Thanks Bob,Mark, and Askild. I apologise for taking so long to reply - this is due to the different time zones. Yes, the `52 has a different sampler than the `50,or`51. The `50,and `51 have the same limiter [if fitted ], sampler, and microwave module. It could be that they are identical apart from the settings of the DIP switches, mentioned in Askild`s reply, and the printing on the front panel. My 5350B is in Texas still, and won`t be here for a couple of weeks, but I`ll have a look at the DIP switch settings when it arrives, and compare these with those on Askild`s 5351B, and might try changing some of the settings. I don`t think I can do too much harm by doing so. As far as the different connector on the channel 2 input is concerned, I suggest that it doesnt really matter what sort it is because the input SWR is about 3.5 anyway. I haven`t been able to find any mention in the manual I have to what each DIP switch does, and I`m not sure how to get this information. More later. Cheers!.........................................Don ? On Fri, Mar 6, 2020 at 9:44 AM Mark Bielman <mbielman@...> wrote:
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