Products > Test Equipment
bg7tbl gpsdo master reference
foxale08:
I have two of the 2021-06-10 GPSDO boards upgraded to UCT 108663-01's, was curious if anyone knows how to use the crystal vref to drive EFC? I can confirm swapping R4/R5 for 5V/12V and the X1/X2/X3 information from older boards is still valid but botched my attempt to validate swapping C53 to C44 for the upgrade from a CTS 196 to UCT 108663-01, as such I didn't attempt it on my second unit (currently using a bodge wire from the new to old crystal RF output post)
Mkpirulo:
Hi, general question for the group. I have a BG7BTL with date code of 2019-10-20, PCB date code is 2021-06-10. This unit has a Trimble 72344 ocxo, would anyone have the specs on this ocxo. Mainly interested in the EFC pin control specs.. Trying to see if it might be possible to remove this reference and use the Efratom FRS-C rubidium in its place. The FRS-C has a control pin 0 - 5V. If anyone can point me in the right direction that would be much appreciated. Picture attach of the reference.
There is a PCB on eBay that seems to be already setup for rubidium but no info on EFC output. Here is a picture of that board. Picture 7001 is the back of the rubidium PCB.
FPSychotic:
Could you please share the right configuration for M8T? Of if you have a link where is already explained I would thank you. Cheers.
Got one of these in a bid and I have m8T module.
By thr way my M8T has the time pin exposed, would be enough use that pin without need solder /desolder the chip?
points2:
Hi,
just a question : what's the short term stability of this populated PCB ?
mojoe:
--- Quote from: Bushougoma on February 07, 2023, 12:18:48 pm ---I was able to purchase a BG7TBL on Amazon and wanted to post pics of the internals here. It seems that this original design has matured to the point where the only real difference we're going to see is different OCXOs and possibly GPS modules.
--- End quote ---
I know that you posted on this a year ago, but I wonder if you know anything about that connector on the PCB, labeled LCD? It would be nice to add an LCD display to this.
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