Re: [Elecraft] XG2 Sig. Generator

[Harlan Sherriff via Elecraft]

Just a quick thought, are you using a 10:1 probe? If so, you would only be 
getting 5 uV to the scope.

Harlan 
K4HES

Sent from my iPhone

> On May 9, 2017, at 1:49 PM, Randy Moore  wrote:
> 
> I have a trusty Elecraft XG2 S9 Signal Generator that I've used for years. It 
> produces a nice S9 signal into my K3 at 7040.3 KHz.  I'm trying to use it for 
> trouble shooting a problem on a transceiver kit and there's something that I 
> don't understand.  When I try to measure the 50 uV (S9) signal with a Siglent 
> SDS 1102 CML scope, I get nothing (no signal). I've tried it with the XG2 
> antenna connector open, and with it connected to a good 50 ohm dummy load.  
> I'm measuring at the XG2 antenna connector (center conductor) with the scope 
> probe grounded on the large 50 uV/1 uV switch which is grounded to the XG2 
> circuit board ground.
> 
> I'm able to measure other signals of about the same amplitude and frequency.
> 
> Are my expectations wrong, or am I doing something wrong???
> 
> 73,
> Randy, KS4L
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Re: [Elecraft] XG2 Sig. Generator

[Don Wilhelm]

Randy,

That scope has a sensitivity of 2mV per division on the most sensitive 
setting.  That is 2000uV per division.  The 50uV output of the XG2 would 
show up as only 1/40th of a division on your 'scope - that may not be 
enough to discern easily.
If you are using a 10X probe then the XG2 output would be only 1/400th 
of a division - very difficult to see.


73,
Don W3FPR

On 5/9/2017 1:49 PM, Randy Moore wrote:
I have a trusty Elecraft XG2 S9 Signal Generator that I've used for 
years. It produces a nice S9 signal into my K3 at 7040.3 KHz.  I'm 
trying to use it for trouble shooting a problem on a transceiver kit and 
there's something that I don't understand.  When I try to measure the 50 
uV (S9) signal with a Siglent SDS 1102 CML scope, I get nothing (no 
signal). I've tried it with the XG2 antenna connector open, and with it 
connected to a good 50 ohm dummy load.

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