Astronomy Site: Meade Advanced Products Users Group Archive: Re: [M]: LX200 IR port output voltage

 
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Subject: Re: [M]: LX200 IR port output voltage
From: Geoff Todd
Reply To: mapug@shore.net
Date: Mon Sep 21 02:21:07 1998

While you're here, how about checking out the Astronomy Book List ?

>Anyone know off hand what the max voltage out of the Illuminated Reticle
>port on the LX200 control panel is?

Not sure how typical this is but I measured the voltages on my scope to check compatibility with a non Meade reticle.

Results are :

Open circuit = 5.02V (5V nominal ?)

Equivalent source resistance = 498 Ohm (500 Ohm nominal ?)

Voltage reduces approx 0.5V for each luminance reduction step


Hope this helps

Geoff Todd




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