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8924C power in on 60watt port question.


 

Hi group, first forgive my ignorances but on my hp8924c I have been using it to align my transceivers, in transmit mode on the 60 watt port I can look at power, frequency etc, but I want to also look at the spectrum and output on the build in O scope. Can I safely do this via the 60 watt port without damaging anything? If so is there anything I need to do when I go to SA or Oscope mode??

Thanks,
Bill


 

I have a 60 watt 8294 and have no problem putting a transmitter into the 60 watt port and using any function of the 8294.? It will take 100 watts for a very short time but I would not go over the 60 watt rating.

You may want to set the SA level to the 50 db or what ever is the highest setting to start with before transmitting.

Ralph ku4pt


On Saturday, June 19, 2021, 05:17:27 PM EDT, William Verstelle <bverstelle@...> wrote:


Hi group, first forgive my ignorances but on my hp8924c I have been using it to align my transceivers, in transmit mode on the 60 watt port I can look at power, frequency etc, but I want to also look at the spectrum and output on the build in O scope. Can I safely do this via the 60 watt port without damaging anything? If so is there anything I need to do when I go to SA or Oscope mode??

Thanks,
Bill

_._,_._,_


 

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Spectrum analyzer is used on the? RF I/O port, or over the air spectrum analyzer in the antenna port, DO NOT connect transmitter to the ANTENNA PORT!

When you say "output" what do you mean? The built in scope is for AUDIO/DC. NOT transmitter RF.


On 6/19/2021 04:17 PM, William Verstelle wrote:

Hi group, first forgive my ignorances but on my hp8924c I have been using it to align my transceivers, in transmit mode on the 60 watt port I can look at power, frequency etc, but I want to also look at the spectrum and output on the build in O scope. Can I safely do this via the 60 watt port without damaging anything? If so is there anything I need to do when I go to SA or Oscope mode??

Thanks,
Bill


 

Ok Thank Ralph I though it would be OK as long as I stay on then 60 watt port but I wanted to make sure before I did something stupid.?

Jim sorry I meant to say output to the 60 watt port. Thanks for the info in the oscilloscope being a audio only I did read where that the 8920 is like a 17khz scope so guess the 8924 is the same. I have put an antenna on the other input port and used it like a radio and it worked very well, I would never put any RF on that I put.?

Anyway thanks Guys for taking the time to straighten me out,
73 Bill N7OQ


 
Edited

The quick setup document in the files section will get you started, but the 8920A-B-Application-Handbook-08920-90126.pdf
is more devoted to AM/FM/SSB tests, It also shows the block diagrams which helps to understand the setups.?
These tests are mostly the same for the 8924.? Get to know it.? The 8924 manuals go more into cell testing.

The 60 watt N connector port goes to a very small internal 30db power pad to the antenna port.
For the bench, I generally use an external 300w 30 or 40 db pad rather than heat up the instrument.
Also a good idea to use external 10-20 db attenuation for any antenna hooked up to the antenna port.

I have often noted that first thing a newbie will do is hook up an antenna to the antenna port at a site and
immediately fry the input.? Anyone who has been around will have PTSD about it.