ETS-Lindgren 2171B Boresight Antenna Tower - Manual (Page 20)

20 | Electrical Installation
Connecting the Positioning Controller
EMC ENTER RF M ODULAR P LATFORM
The ETS-Lindgren EMCenter ™ Modular RF Platform (with EMControl™
Positioner Controller Plug-In Card) may be used to control the
Model 2171B/2170B Antenna Positioning Tower. For information on connecting
and using the EMCenter, see the EMCenter Modular RF Platform User Manual.
M ODEL 2090 M ULTI -D EVICE C ONTROLLER
Any combination of primary devices (towers, turntables, reverberation paddles,
MAPS, and so on) can be connected to the two device interface ports located on
the rear panel of the Model 2090 Series Multi-Device Controller. For easy setup
of an EMC facility, it is recommended that the Model 2171B/2170B Antenna
Positioning Tower be connected to the Device 1 port. The default settings are for
a tower connected to the Device 1 port and a turntable connected to the
Device 2 port.
Primary device connection is accomplished with a dual fiber optic cable included
with the device. This cable terminates into two ST connectors that are identical at
both ends. The cable is symmetrical, so either end can be connected to the
Model 2090. A fiber optic cable connected to the IN port of a device should be
connected to the primary OUT port of the motor base at the other end. Similarly,
a fiber optic cable connected to the OUT port of the device should be connected
to the primary IN port of the motor base at the other end. Older motor base
designs have only one fiber optic connector pair, but the newer motor base
interface provides a secondary interface reserved for future expansion.
Fiber optic cabling for each device should not hang
unsupported from the rear panel of the Model 2090. The fibers
and connectors are easily broken if twisted or bent. Keep the
fiber optic cables as straight as possible from the connector to
the protective sheath.