Re: 5342A: blown sampler?
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Hi Tobias Check out?http://www.azurelectronics.com/Repair%20HP%205342A%20Microwave%20Frequency.htm as it may help. Regards Steve
On ?Monday?, ?October? ?16?, ?2017? ?08?:?56?:?32? ?AM? ?BST, Tobias Pluess tobias.pluess@... [hp_agilent_equipment] wrote:
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Hi all,
one of my other projects I'm working on is a 5342A which does not count on the high frequency input.
I checked the sampler according to the service manual. I used a 34401A for the resistance meausrement and got 22k in forward bias and >3M in reverse bias. This is quite different from the values stated in the service manual; however, when I look at the schematic,
I think it should be possible to test the sampler with the diode test function. I did that, and I found out that in forward bias, I have approx. 0.4 volts, and reverse bias is open. So it looks like a pretty nice diode. However I cannot compare to other samplers,
and the service manual also tells that the resistance measured can vary greatly if not exact 1mA measuring current is used.
Does that sampler look good to you guys, or is it probably broken? because if it is broken I think it makes no sense to invest additional time to fix things.
Tobias, HB9FSX
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