[time-nuts] Fluke1 Monitor

[Richard W. Solomon]

I cut the lead on pin 4 of the RS-232 connector and hooked it to +12 vdc.
That way I eliminate using another supply. Seems to work alright.

Just need to make sure that pin 4 of the Computer's Serial Port doesn't
have a compatibility problem. (Just means I can't hook up a computer to
the T-Bolt if there is).

73, Dick, W1KSZ


-----Original Message-----
>From: Mike Naruta AA8K <aa8k at comcast.net>
>Sent: Feb 16, 2010 4:44 PM
>To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
>Subject: Re: [time-nuts] ko4bb monitor
>
>
>Thunderbolt PRECISION GPS 10mhz Standard's LED Monitor
>
>I received two from fluke.l 16 days after I sent my PayPal payment.
>
>It was well-packaged and he fit both in one box to save me 
>shipping costs.
>
>They came with a DB-9P already soldered on the cable and a 
>typical DC power jack.  He even included shells for the DB-9P. 
>They both powered up fine and started talking with my 
>Thunderbolts right away.  Current drain is about 75 ma at 
>start-up and then falls to 50 ma (13.6 volts).
>
>It's not Lady Heather, but I can monitor my TBolts at a glance 
>without tying up PCs.
>
>
>Mike - AA8K
>
>
>Arthur Dent wrote:
>> The display I got from fluke.l (ordered 12-4-09) ran on +5V but the one I got from Amazon had a 3-terminal regulator and would run from 7-20V and was designed for +12V. I just noticed Bob's Ebay listing has been changed to add this note:
>> 
>> "because of some reasons,i change one IC on the PCB, 
>> so the buyer whom bought the display unit after 2009.12.25 Please use the 9V for 
>> the Power supply. 12v also OK."
>> 
>
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