[Lowfer] Problem w/ Freq Cntr

[Dave Brown]

Check the connection between the BNC connector and the cable shield. 
If its open you're effectively plugging a 'bit of wire' into the 
counter input.

Regards,
DaveB, NZ


----- Original Message ----- 
From: "Peter Barick" <pbarick at wpo.cso.niu.edu>
To: <lowfer at mailman.qth.net>
Sent: Thursday, February 21, 2008 4:55 AM
Subject: [Lowfer] Problem w/ Freq Cntr


All, esp. techs,

I'm stuck with a problem. I recently got a used Fluke counter from an 
known equipment provider.
Want to use it to help in building x-tal divider circuits, down to LF.

What it does: Lights up when turned on. The self test according to the 
manual is okay. But when the
BNC cable is plugged in the counter goes wild--only when cable 
connected. Does that when cable
leads are open or, say, connected to a low value resistor.

Oh, once or twice it locked-on to a simple FET osc. circuit of a known 
crystal.

Ideas??

Peter
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