[time-nuts] Austron 2100 Loran-C Frequency and Timing Receiver

Scott McGrath scmcgrath at gmail.com
Fri Oct 17 20:41:26 UTC 2008


I have a 2100 I'll see if my EPROM programmer still works and try and
download the EPROMS to a .HEX file and If I can do that i'll send them
along to Didier and Brooke so they can be hosted for posterity.

- Scott

P.S.

Does anyone have the part number for the 24V cannon connector on the 2100



On Fri, Oct 17, 2008 at 2:14 PM, Brooke Clarke <brooke at pacific.net> wrote:
> Hi Skip:
>
> I used the HP signature analyzer and found a bad data bus buffer chip is short
> order.  I'm  sure it would also identify a bad EPROM chip.
>
> Have Fun,
>
> Brooke Clarke
> http://www.prc68.com/P/Prod.html  Products I make and sell
> http://www.prc68.com/Alpha.shtml  All my web pages listed based on html name
> http://www.PRC68.com
> http://www.precisionclock.com
> http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Web Cam
>
> Skip Withrow wrote:
>> Hello Time-Nuts,
>>
>> Well, my Austron 2100 seems to have bit the dust.  The indication of trouble
>> is that the 1pps light quit blinking.  After some debug it appears that all
>> the hardware is working (I have the manual with schematics) and that it is
>> not getting a software pulse that diddles a flip-flop.
>>
>> There are some software diagnostic routines in the box.  The RAM test runs
>> fine, but it appears that I get an error on the EPROM test.  The test
>> generates an E-20 error.  The book states that if the EPROM test fails it
>> will give an E-21, but nowhere do I find any hint as to what an E-20 error
>> is.
>>
>> I suspect that perhaps I have a corrupted EPROM.  Most of the code appears
>> to be working properly (front panel display and buttons work, it will even
>> lock to Loran).  There are three 2732A EPROMS, but no indication as to the
>> checksum on the devices so can't verify if one is bad.
>>
>> Is there a time-nut out there with an Austron 2100?  I would like to get a
>> copy of the EPROMS or the code in them to check my unit.  Even the checksums
>> would help (given that the firmware revision is the same).  The boards are
>> very easily accessed from the front panel and the unit doesn't even have to
>> be taken out of the rack.  I have the capability to read and program the
>> devices.
>>
>> Thanks in advance for any help with this oldie, but (was) goodie.
>>
>> Skip Withrow
>>
>>
>>
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>
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