[time-nuts] Z3805A Stock RS-232?

[Mark Spencer]

Hi, I have two Z3805A's that I believe came from the same source as yours.  They both have RS-232 outputs.   
 
Best 
Regards
Mark Spencer
 
 

Message: 6
Date: Mon, 22 Apr 2013 15:26:14 -0700
From: Brooke Clarke <brooke at pacific.net>
To: time-nuts at febo.com
Subject: [time-nuts] Z3805A Stock RS-232?
Message-ID: <5175B906.5080505 at pacific.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi:

I opened up my Z3805A and after looking at the bottom of the main board think it's already jumpered for RS-232.
See the bottom photo at: http://www.prc68.com/I/Z3805A.html#DB-25 near the DB-25 connector.
There's only 3 zero Ohm jumpers and none of them are where the Z3801 jumpers were.

Also is there a way to tell which GPS daughter board I have?
See the top side motherboard photo (click for larger, click again if (+) cursor:
http://www.prc68.com/I/Z3805A.html#DB-25
The metal can is marked:
326/2486
2643686MAD
and the PCB is marked:
TM-AB

The motherboard has many things that raise questions, like installed parts whose function is not clear, like:
6 LEDs near U1
J2 2x5 0.1" vertical header pins, JTAG?
J13 4-pin horizontal connector
S1 with 8 switches

Many component pads without components.

-- 
Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html