Hi guys, I´ve some spare time now due to the facts happening around the world now, so I was looking at something to pass the time and decide to start putting together the GPSDO project that I´ve put aside about some 3 years ago.
I´ve a Trimble 57963-B board, i´ve it plug in at 6.5v, for now I´ve no antenna since the one that was in use is broken by a fall.
At first power on the 2 led´s flash red, and one of them change to green, I left it plug for the night.
When I went back this morning both led´s were red fix, if I connect it to my HP53131, it read 10.000.084.~~~.~, so the OCXO is working from what I can see.
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif)
The 53131 is with Trigger:
Auto ON, Level 50%, Slope POS, Sense Hi, 50
![Ohms \$\Omega\$](https://www.eevblog.com/forum/Smileys/default/omega.gif)
DC coupled with 100kHz filter on, the Gate time is 5.000s
On the J5 I´ve put some pinheads to be easy to connect, and plug it to the PC RS-232, facing the board the 1PPS MCX is at the left, so pin 5 (RS-232 GND) at the left pin, pin2 (RS-232 RxD) at the 4 (square hole), pin3 (RS-232 TxD) at the pin3, and at 57600 8N1N on PuTTy but it doesen´t put out any prompt line like UCCM
![Confused :-//](https://www.eevblog.com/forum/Smileys/default/confused0024.gif)
At the board on the J5 pin 3 I´ve -5.6v, on the MCX for the antenna i´ve the +5v for the antenna, from what I can see on all the test points i´ve 3.27v, teh MACT and Reset buttons don´t do nothing.
Can any of you guys give any hint, or should I trash the board