[time-nuts] Question and help with LPRO-101

[Don @ True-Cal]

Ian,

No problem, more discussion - the better.

Unscrew the two hex standoffs on either side on the connector, pull the 10-pin feed-through out of the internal connector. Note the position of the grounded pins vs. the capacitive bypass feedthrough pins. This will free up the metal cover to "snap" off of the base plate. A very small screwdriver can be used in the small slots at each of the four coners to pry the box cover free from the base plate.

Caution, here is where a little will-power is needed to resist tuning the several adjustments for "better performance".

Have fun,
Don


----- Original Message ----
From: Ian Sheffield <ian.sheffield1 at tesco.net>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Sent: Monday, October 20, 2008 1:34:01 PM
Subject: Re: [time-nuts] Question and help with LPRO-101

Hello Don,

Sorry to hijack your question, but how do you get inside an LPRO-101? Does 
the case just spring off?

Thanks,

Ian.


----- Original Message ----- 
From: "Don @ True-Cal" <true-cal at swbell.net>
To: <time-nuts at febo.com>
Sent: Monday, October 20, 2008 7:05 PM
Subject: [time-nuts] Question and help with LPRO-101


Hello,

Can anyone guide me or give me a link to internal settings on the Efratom 
LPRO-101 Rb oscillator. I have the User's and Integration Guide but I am 
looking for more detailed information on any optional settings that may be 
available from the many inside jumpers and/or hidden connectors. 
Specifically, all of the units I have provide a 10MHz sine wave output and I 
am wanting a 1PPS output on one of the units. I believe there are LPROs that 
provide a 1PPS output but not sure if they are a different part number unit 
with different electronics or just different jumper options inside. I scoped 
the hidden connector J6 but no 1PPS signal.

There is a 9-pair J8 jumper block with 2 jumpers and a 7-pair J8 with one 
jumper and a 2-pair J1 with no jumper. There is also a connector block J9 
and a 3-pair J10 but they are back by the Rb lamp/cavity with analog signals 
on some probably for initial test/calibration.

My units are Cage Code 55761, Part Number 102500-001

Thanks...
Don
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