[AILtech] Re: [Test-Equipment] LF Ailtech 7514 and noise sorce

[jeremy-ca]

My experience with the early AIL's ended around 1980. I wasnt impressed as a 
home brew 5722 had similar accuracy up to 2M and was a lot easier to use. 
But I was still using 417A's back then. My HB W2AZL converter measured 2.4 
dB with the 5722 and 2.2 dB 25 years later with the 8970A. I rarely throw 
anything away!

Carl
KM1H





As long as the new ones can compete with HP/Agilent and give equal readings 
(unfortunately the HP is the standard) they will sell.


----- Original Message ----- 
From: "J Forster" <jfor at quik.com>
To: "Discussion of Electronic Test Equipment" 
<test-equipment at mailman.qth.net>
Sent: Tuesday, December 25, 2007 7:04 PM
Subject: Re: [AILtech] Re: [Test-Equipment] LF Ailtech 7514 and noise sorce


> jeremy-ca wrote:
>
> The HP 8970A & B will measure directly to 1600 MHz  and 2047 MHz for the B
>
>> model with Option 20. The B will also drive a plotter and I believe PC
>> control over the HP-IB is possible. The setup instruction set is also a 
>> bit
>> different for the B. They are microprocessor controlled and the AIL is 
>> all
>> manual.
>>
>> The 8970A has less demand in the market so prices are often low.
>
> Only the very early AILs are manual. The AIL 2075 is fully uP controlled, 
> has
> GPIB, and is VERY capable.  It goes well above 1 GHz with the internal 
> mixer and
> as high as you like with an external mixer and LO. The AIL noise sources 
> are
> quite robust. I've never seen a bad one.
>
> BTW, many of the AIL 75xx's are System Noise Monitors, rather than 
> flexible test
> instruments, made to be built into systems
>
> -John
>
>
>> HP noise sources are fragile and expensive, use of a pad ahead of the DUT
>> prevents damage. NoiseCom has a source that is less sensitive to damage 
>> and
>> a bit cheaper.
>>
>> >
>> > I am just trying to figure what I would need to test some rec amps for 
>> > 50
>> > MHz to 10 GHz>
>>
>> The HP or something similar. The 8970 is the standard for all the noise
>> measurements tests at the conventions, hamfests, etc.
>> It can be a real PITA to setup, the enclosed pull charts leave a lot to 
>> be
>> desired so be sure to get the manual.
>>
>> Carl
>> KM1H
>
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