[time-nuts] Re: Fei FE-5680A RS-232 interface.

[DM]

There's a document on Didier's manual site at http://www.ko4bb.com/getsimple/index.php?id=manuals&dir=02_GPS_Timing/FEI/FE-5680A that describes the serial interface on the FE-5680A.  It describes it as Option 2, and accoeding to the intro in the document, only units having Option 2 had a useable serial interface.  So, check the labels on the unit, and if it doesn't have Option 2, serial control is unavailable.

Cheers,
DaveM

----- Original Message -----
From: "Time-Nuts" <time-nuts at lists.febo.com>
To: "Time-Nuts" <time-nuts at lists.febo.com>
Cc: "Dave B" <g8kbvdave at googlemail.com>
Sent: Thursday, July 27, 2023 4:49:40 AM
Subject: [time-nuts] Re: Fei FE-5680A RS-232 interface.

Hi.

I Just did a simple Google for "FE-5680A" and found this:-
https://www.hamwan.org/files/FE/FE-5680A%20Technical%20Manual.pdf

Sheet 8:  mentions RS-232 on J1 8 & 9   NOTE!  Though a 9 pin connector,
if it is a "D" shape thing, it is NOT the usual serial port pin-out,
you'll need to make a custom cable to use it.

Anyway...

Try measuring the idling RS232 TX-D output (pin-9) voltage level. If -ve
more than 5V, it's likely a "Real" RS232 port compatible signal level

The Loop Lock output on Pin-3, "Might" be able to be monitored by one of
the Serial Port Handshake lines, on whatever serial port device you use
with your computer, even if it only swings from 0V to some +V level.

Most software can be set to poll or otherwise read the state of the
serial port handshake/status lines, with a bit of effort.

(Take care with the DC input power requirements, dependent on if "Option
25" is fitted, or not.)

Hope that document is relevant to the box you have.

Regards.

Dave G8KBV.

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