ORBIT FR AL-38000 User Manual

LIGHT DUTYAL-38000 SERIES

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Model Towers – Light Duty

AL-38000 Series

➊ APPLICATIONS

• General Purpose Positioning

Subsystems

• Far-Field & Near-Field Antenna

Measurements

• Indoor Use

➋ PRODUCT HIGHTLIGHTS

• Linear Bearings

• Scale (Offset Indication)

• Mechanical Stops

• Manual AUT Adjustment over Lower

AZ Center of Rotation

• Compatible with Standard Antenna

Positioners (Support Wiring Required)

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AL-38100

Our AL-38000 model towers are suited for
light duty applications with an operating
load of up to 150 lbs (68 kg). This series
is available with a choice of either a manual
or motorized linear offset slide.
The manual slide can be hand-push
or handwheel. The mast, which can be either
vertical or inclined, is available in fi berglass
or aluminum construction.

AL-38100

supplied accessories

technical notes

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CD-ROM Documentation Set:

 User Manual (Installation, Setup, Operation & Maintenance)

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Cables:

 Cable Carrier
 Interconnect Cable for Connection to Lower Positioner

optional accessories

 Absorber Plates
 Alignment Fixture Between Roll Positioner & Mast
 Counterweights (may apply if elevation axis is defi ned)

 1 Model tower height is defi ned as the distance from

the base of the linear offset slide to the center of the
roll axis. The height of the model tower assembly will
impact pickup mode in lower positioners containing an
elevation axis. Defi ne elevation measurement angles and
verify lower positioner specifi cations when confi guring
this product.

 2 The lower positioner may require electrical wiring and/

or an RF path to support the model tower. Options are
available for the lower positioner, including EX002, SR,
and RJ. Lower positioner is purchased separately.

 3 All accuracy data is based on no-load conditions.

Contact ORBIT/FR for accuracy under load conditions.

 4 Roll axis is equipped with adjustable limit switches

capable of approx 20° up to 900° total travel.
When rotary joint options are specifi ed, limit switches
remain but are electrically disabled. Roll axis is
factory-set at 400° (± 200°).

 5 Rotary joint options may alter the original physical

profi le of the roll axis stage. Consult ORBIT/FR.

 6 Verify model tower’s maximum swing radius

(G - clearance to absorber) when specifying
this product for use inside an anechoic chamber.

 7 Dimensions may vary depending on fi nal confi guration.
 8 Standard offset slide travel is 24 inches. Other lengths

are available in one foot increments, up to 8 feet.

 9 An optional alignment fi xture can be installed between

the roll axis positioner and mast.

ORDERING INFORMATION

• Build your confi guration using the ordering example below.

AL-38100 HW 24 96 F C 360

Model Tower Series

38100 - Manual

38200 - Motorized

* To order with integrated gearhead, leave the end of the part number blank and add GH1 as a separate line item.
For GH1 specs, refer to specifi cation table on page 118.

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Linear Offset

Slide Travel (in)

Mast Construction

(Fiberglass or

Discrete Positioner

Aluminum)

HP - Hand-push

HW - Handwheel

M - Motorized

Total Roll-to-Base

Height (in)

Mast

C - Inclined

V - Vertical

> Model Towers

Model*

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