[Pafgbt] Photos of shelf

[刁俊铭 (Junming Diao)]

Hi, Bob,

I have a question for you:
Our receiver board has 60 dB gain, which leads to too much power (10 W) to
ADC (ROACH). Can you tell me whether there is some methods to fix this
problem.

Thanks,
Junming

On Mon, Jan 7, 2013 at 5:21 PM, 刁俊铭 (Junming Diao) <diaojunming at gmail.com>wrote:

> Thanks, Bob! This is very helpful!
> Junming
>
>
> On Mon, Jan 7, 2013 at 2:34 PM, Bob Simon <bsimon at nrao.edu> wrote:
>
>>  Hi,
>>      Attached is the original order I did for the rack purchase.  I told
>> you incorrectly; it was not Amco, but instead it was IMS engineered
>> products.  I don't know your exact application, but be aware that shielded
>> racks are very expensive compared to the non-shielded type.
>>      Our racks are positioned over a forced air plenum.  So, you may need
>> honeycomb RFI air filters for both intake and exhaust air.  Depending on
>> heat generated, you may need additional fans on the exhaust side to pull
>> air out of the rack.  We purchase RFI air filters form either MAJR or East
>> coast shielding
>> http://www.majr.com/
>> http://www.eastcoastshielding.com/
>>      You'll need to size the filters according your requirements.
>> Installation of these filters requires machine shop work to insure proper
>> fitting for RFI shielding.
>> Hope this helps,
>> Bob..
>>
>>
>>
>>
>> On 1/7/2013 3:35 PM, 刁俊铭 (Junming Diao) wrote:
>>
>> Thanks, Bob. Please tell me know the details of rack you buy from
>> http://www.amcoenclosures.com/. I think this one is a good choice for
>> us.
>> Junming
>>
>> On Mon, Jan 7, 2013 at 6:23 AM, Bob Simon <bsimon at nrao.edu> wrote:
>>
>>> variety to choose from
>>
>>
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listmgr.nrao.edu/pipermail/pafgbt/attachments/20130201/b0bc10d2/attachment.html>