Target manipulation systems, Rcs p ro d uc ts – ORBIT FR String Reel Target Manipulation Systems User Manual

Page 3

RCS P

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Safety
The Spool is grooved to ensure proper winding of
the string. The string is also protected by a close
fit cover and string guide to ensure proper
winding and unwinding of the string at "No Load"
condition.

Properties Of The String Reel Mechanism

• Absolute Readout
• The string is wound on one layer only for the

total 150 ft of travel. A dual-speed synchro is
the readout system, thus the typical resolution
is 0.005 inches.

• Compatibility: The system is operated with

standard power and control equipment as in all
ORBIT/FR antenna measurement instruments.

• Low friction: All parts in contact with the string

are Teflon-coated to reduce wear to a
minimum.

• The unit is based on ORBIT/FR polarization

positioner with addition of spool mechanism.
Thus, most features of the polarization
positioner can also be implemented in the string
reel unit.

• Totally enclosed design of the drive gear train

and data take-off.

• Precision heavy-duty bearings.
• Variety of options: Rotary Joints, Slip-Rings, etc.
• All models are equipped with a tachometer for

speed regulation and control.

All models are equipped with synchros operable at
both 50 Hz and 60 Hz.

Target Manipulation Systems