[evlatests] BD T304 power meters and attenuators

Rob Long rlong at nrao.edu
Thu Jun 10 13:36:32 EDT 2010


B/D attenuator settings being fixed works well if you use the same LO 
freqs. If different parts of the band are used (different LO tunings) 
the LUT tends to cause problems with incorrect level settings. Just my 
observation.

Rob

Bryan Butler wrote:
> well, i agree it would be messy, but is it worth the pain to do so?  i 
> keep hearing rumblings that BD is better behaved because of the lookup 
> table vs. ALC - is that false rumor, or something to be heeded?
> 
> 	-bryan
> 
> 
> Ken Sowinski wrote, On 6/10/10 10:53:
>> On Thu, 10 Jun 2010, Bryan Butler wrote:
>>
>>> did we decide to simply do away with the lookup tables entirely, or 
>>> just not make it the default and still make it possible to turn them on?
>> If lookup tables are not the defualt they will not be maintained
>> and turning them on will, over time, turn into disaster.
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