[time-nuts] Austron 2100 Loran-C Frequency and Timing Receiver
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.
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/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
>> 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
>> Thanks in advance for any help with this oldie, but (was) goodie.
>> Skip Withrow
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