Table of Contents
Advertisement
requires a pair of conductors. Since the RC2000 motor drive outputs are not actually carrying motor drive
current light gauge conductors (16-20 AWG) can be used, shielded cables are not required.
In most cases the cable used to connect the RC2000 to the interface box will also include the conductors
required to interface the RC2000 to the azimuth and elevation position sensors. Each sensor requires 3
conductors in a shielded cable with a drain wire. The conductors in the sensor cable don't carry much
current, 22 to 18 gauge conductors work fine. In some cases it will be necessary to splice sensor cables in
the interface box. Figure 7 is an example of a sensor cable splice.
When making sensor connections please note the following ...
•
Always use shielded cables.
•
The shield drain wire should only be connected at the RC2000.
•
If the cable is spliced, be sure to splice the drain wire.
•
Don't allow the shield or drain wire to come in contact with ground anywhere. If the cable insulation
is cut at a splice put a piece of heat shrink over the frayed shield to keep it from coming in contact with
ground.
•
Don't connect the drain wire or shield at the sensor.
Failure to follow these guidelines can result in unreliable operation of the pulse counters and antenna
controller positioning errors
RC2000 Antenna Controller Interface Box
14
Advertisement
Table of Contents
