-------------------------
 Satellite:
  Antennas
ComSched
 Control Systems
Retrofit Systems
Tracking          
-------------------------
 ComSched
  Software:
Automation
Remote Control
Scheduling           
-------------------------
 Pan/Tilt:
  Control Systems
ENG/TowerCam
Heads
-------------------------
 Camera
  Control:
  Camera/Lens
   Pan/Tilt
      Systems
Multiple Sites 
-------------------------
 Other
   Products:
  Comtech
   Antennas
Fiber Options
Quickset Pan/Tilt
Quickset Tripods

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General:
  Contacting CTI
Customer Service
General Info
 About CTI

 

Optical Position Encoders

  

ComSched
  Remote Control & Scheduling Software . . . . . .
     Version 2.10
Runs on 95, 98, 
   ME, NT, & 2000
Control antennas,
   analog & digital
   receivers.
Custom versions
   control any
   peripherals
   required to
   automate your
   downlinks.
See the
ComSched
 page or contact
CTI for details.
---------------------

Satellite
  Antenna &
    Controller
      Packages
  CTI furnishes
everything
required for a
turnkey antenna
installation:
Antennas
Control Systems
Automation
   Software
Inclined Orbit
  Tracking
Receivers
LNBs
Cables
Installation
  Services

See the
Satellite Product
page or contact
CTI for details.
 

 The CTI-850 Satellite Antenna Controller consists of the following components: a Control Unit, an Antenna Interface Unit (AIU), and a number of position sensors which monitor the motion of the antenna.  Up to three position sensors can be connected to one AIU.  These items are connected as follows:

 

 

The AIU can be configured to accommodate a variety of position sensors:
·        Optical encoders
·        Potentiometers
·        Hall Effect sensors
·        Reed switches
·        Pulse-width-modulated feedhorns.

The standard AIU is configured to accommodate optical encoders.  CTI offers several types of optical encoders designed to accommodate antennas manufactured by a variety of vendors.

CTI specifies the resolution of many encoders by a factor called CPR, or counts per revolution.  This factor specifies the number of counts generated by the encoder during one complete 360-degree revolution of its shaft.[*]  In general, the larger the CPR value, the more accurate.

Each encoder is supplied with the following accessories:
  • 1/4" diameter shaft.
  • 1/4" bellows-type flexible coupling.
  • Mounting screws.
  • 30-foot cable (other lengths are available on special order).
  • Male 9-pin connector for direct connection to the AIU.

[*]  Some encoder manufacturers specify encoder resolution by cycles per revolution rather than counts per revolution.  One cycle  equals four counts; thus, a 5,000-cycle encoder has a CPR value of 20,000.