[time-nuts] upgrading agilent 53132 counter

[AL1]

Hi David,

i take the time to verify that my eproms in the counter where really 
Am29F010B-45jc.
OK, i would be happy to have the "good image files you generated from good 
parts".
The HP-reference of mine are :
U8   53132-80023  3944
U9       "     -80024     "
U10     "     -80025     "
U11     "     -80026     "

The memories (U8) have the refrence  :
         AM 29F 010B
         -45jc
         0010 DBA
         1998 AMD
So, how can i receive your files?
During the tests i've found an other fail : FR end, but the two entrances 
are functionnal, i didn't test as time interval counter.
For the OCXO option, i thought i need a more powerfull PSU than the basic 
one...
Thanks in advance
Best regards
Alain
F4GBC (Ref 55987)


----- Original Message ----- 
From: "David " <t_list_1_only at braw.co.uk>
To: <time-nuts at febo.com>
Sent: Friday, October 02, 2009 9:02 PM
Subject: Re: [time-nuts] upgrading agilent 53132 counter


>
>
> Hi Alain
>
> I can't help with the differences in the PSUs, there is little you can 
> tell
> by looking at the unit. I wonder if it might be easier to run the OCXO 
> from
> a new additional supply housed in the unit, there appears to be space for
> this (?) and feed the 10MHz into the external REF I/P?  There are options.
>
>> effectively, at power on, i have a message : rom failed, but
>> it seems to have no importance, since after actioning the
>> run touch, it works well (why ???). Do you really need an
>> image of the eprom ?
>
> Regarding the eproms, your fault description matches what I've seen in 3 
> or
> 4 units, all at first glance functional. The worry is that the fault 
> clearly
> was not there a few years ago and you have got to assume the worst, why
> should it stop degrading? The blank parts are Am29F010B flash and were 
> cheap
> and available when I looked. Let me know if you want the image files I
> generated of good parts emailed, the set of images etc in various formats 
> is
> about 1.7M (4 parts in 3 different file formats).
>
> David