The input to the AZ and EL A/D's are clamped to +5V by diodes as well so this makes sense.
From: wa4sca@gmail.com To: PeteW2JV@verizon.net; AMSAT-BB@amsat.org Date: Wed, 17 Feb 2016 06:26:40 -0600 Subject: Re: [amsat-bb] Fw: Fwd: LVB tracker
Peter,
It isn't shown on the schematic, but elsewhere in the rotator docs (page 5, External Control) it specifies 0-4.5V DC for the position sensing outputs. Depending on the existing interface, a simple voltage divider would probably do. I don't have an LVB tracker, so I can't comment on that end.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of W2JV <Sent: Tuesday, February 16, 2016 7:30 PM <To: AMSAT-BB@amsat.org <Subject: [amsat-bb] Fw: Fwd: LVB tracker < < <The Great South Bay, Amateur Radio Club, of which I?m a member wants to put together a satellite <station. <They have an existing home made AZ EL power unit which works. They are looking into interfacing an <LVB tracker with it. <and need to know what voltage level input is required for the feedback loop. The unit currently puts <out 0-6.25vdc corresponding to 0-360 AZ and 0-180 EL. Looking at the G5500 schematic they go <through an opamp arrangement but do not provide any voltage levels. < <If anyone can the club with some info I'd sure appreciate it. < <Thanks, < <W2JV Peter <_______________________________________________ <Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available <to all interested persons worldwide without requiring membership. Opinions expressed <are solely those of the author, and do not reflect the official views of AMSAT-NA. <Not an AMSAT-NA member? Join now to support the amateur satellite program! <Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb