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HP-5245L Plug-Ins

David C. Hallam
 

I acquired a box full of plug-ins for my 5245L counter and have a couple of
questions.

1. 5253B 50-500 MHz heterodyne oscillator The left most digit is not
displayed. i.e., 62.567 is displayed as 2.567. Is this the way it's
supposed to work?

2. 5257A Transfer Oscillator I can't find anything on the internet about
how to use it. I certainly don't want to spend any money on a manual until
I find out if it works and if it will be useful to me. Can some one give a
quick course in how to use it.

David
KC2JD/4
Dave Brown
 

----- Original Message -----
From: "David C. Hallam" <dhallam@...>
To: "HP Agilent" <hp_agilent_equipment@...>
Sent: Wednesday, November 21, 2007 11:35 AM
Subject: [hp_agilent_equipment] HP-5245L Plug-Ins


I acquired a box full of plug-ins for my 5245L counter and have a couple of
questions.

1. 5253B 50-500 MHz heterodyne oscillator The left most digit is not
displayed. i.e., 62.567 is displayed as 2.567. Is this the way it's
supposed to work?

Yes- read off the dial the 10 MHz multiple to add to the reading (or subtract reading from, if tuned on the high side of the unknown) to get the input frequency.



2. 5257A Transfer Oscillator I can't find anything on the internet about
how to use it. I certainly don't want to spend any money on a manual until
I find out if it works and if it will be useful to me. Can some one give a
quick course in how to use it.

There should still be a pdf of the manual here

courtesy Mark VK2BAK-its about 13 MB. I have yet to scan a page or two for him to get clean scans of them, but this should be enough to get you started.

Cheers
DaveB, ZL3FJ

PS If you have a spare 5255A (3-12 GHz) in that box of plugins I'm interested.
 

Hi Dave,

Download the 5257 manual and see if it works. If it does you can sell
all the rest of the hetrodyne plug-ins you have. the 5257 is head and
shoulders above the rest of the pack. It works from 70 megs up to 18
gigs as I recall and the readout on the couter is complete and correct
with all digits. It will also read pulsed signals as well. Any 5245
worth its salt should easily read to 70 megs direct with less than a
hundred millivolts, so you won't have any "gaps".

Slick unit. FYI it also works in the later 5345 as well. The
5345/5257 will let you measure just about anything from DC to BLUE
LITE. Just kidding of course, but almost.

Mike
KE0ZU

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