Author Topic: HP 8591A OCXO coax  (Read 1453 times)

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Offline kc8ardTopic starter

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HP 8591A OCXO coax
« on: February 19, 2018, 10:26:06 pm »
Hello all, this is my first post. Simple question.... I was able to win a good condition 8591A on ebay. I even picked up an ocxo for it. Now, what is the coax connector called that goes between the spectrum analyzer and the ocxo? I have no idea what it is, as it looks like a combo between an airline qd connector and a sma.
 

Offline xwarp

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Re: HP 8591A OCXO coax
« Reply #1 on: February 20, 2018, 03:13:04 am »
SMB?
 

Offline kc8ardTopic starter

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Re: HP 8591A OCXO coax
« Reply #2 on: February 20, 2018, 05:54:33 pm »
Aha. That's it. My googlefu was weak. Now all i need are the pinouts for the ocxo Unfortunately I still can't find a datasheet on it.
 

Offline DaJMasta

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Re: HP 8591A OCXO coax
« Reply #3 on: February 20, 2018, 06:47:39 pm »
Are the service manuals for the analyzer available?  You may be able to find the connector for the cable on the board it attaches to and figure out the pinout backwards from there.
 

Offline kc8ardTopic starter

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Re: HP 8591A OCXO coax
« Reply #4 on: February 20, 2018, 08:14:23 pm »
The service manual is available from keysight. The problem is that I don't see a pinout anywhere. I might have missed it. I'll have to look at the manual again, as I only saw a block diagram.
 

Offline kc8ardTopic starter

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Re: HP 8591A OCXO coax
« Reply #5 on: February 20, 2018, 09:12:53 pm »
I got it, header j3, pin1 +15(green), pin2 +5(red), pin3 acom, pin 4 acom(blue), pin 5 test ref, pin 3 and 5 should be jumpered.  Now, i just need the pinout for the ocxo. Its a McCoy mc833x4-003w that i picked up on ebay for a song and a dance. I need to find the pinouts so i can throw it on the counter first to see how it compares to my gpsdo.
 

Offline kc8ardTopic starter

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Re: HP 8591A OCXO coax
« Reply #6 on: February 20, 2018, 10:02:34 pm »
I'm a moron lol. I found a picture of the actual unit yesterday. I know the ocxo pinout now.
 


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