Atec EMCO-2090 User Manual

Features:

Control for 2 Primary and 4 Auxiliary Devices

SEEK & SCAN Functions

Automatic Target Overrun Correction

Element Saving Limit Setting

Fiber Optic Control Lines

IEEE-488.2 I/O Port

Speed Control

Test Site Hardware

Positioning Controller

Model 2090

Model 2090 Positioning Controller

ETS-EMCO’s Model 2090 P ositioning Controller allows you to synchronize

simultaneou s movement of two primary ETS-EMCO devices (towers or turntables), and on/off operation of up to four auxili ary devices (LISNs, EUTs, et c.). Indep endent op eration of primary devices can be performed manually, by either of the two front panel controls, or remote ly, by a separat e GP IB ad dress for each device. Fibe r optic control line s eliminate RF interference that can be conducted through traditional wire cables.

The Model 2090 is designed to maximize the features of ETS-EMCO antenna towers and turntables. See page 4 for information about retrofits to earlier ETSEMCO models and non-ETS products.

Functions

The front panel de sign o f the Model 2090 features a user-friendly int erface which simplifies device control and clearly communicates primary device movement to the operator. Two separate sets of controls (Device One and Device Tw o), eac h wi th i de n ti cal di sp l a y s a n d fun cti o n s , are included. Other front panel feature s include four auxiliary control switches and the Model 2090 pow er swit c h.

A number of useful primary device commands can be performed by the operator. The SEEK function enables the user to reposition a device to a new target location and the SCAN com mand initiates cyclic movem ent of a device. The CONFIG and LIMIT functions enable the user to p r o gram operational parameters and upper/lower or clockwise/counte rclockwise limits for each device. The POSITION and STEP functions work together to control to wer cross boom and/or turn ta ble posi ti oning. Expanded details of these functions are offer ed be low.

SEEK & SCSEEK & SC

SEEK & SC

SEEK & SCSEEK & SC

ANAN

SEEK allows a target location to be entere d to redirect the device from its current location. Target locations can be automatically incremented/decremented by a given value. The SEEK command is available o nly through the GPIB. All other functions can be performed from both the GPIB and the front panel. The SCAN key initiate s cyclic movement of a device between pre-progr ammed lim its. A cycle is defined as movement from the lower/ count erclockwise limit to the upper/ clockwise limit and back to the lower/ count erclockwise limit. The total number

of cycles is programmable from 1 to 999 or an entry of “000” causes the device to scan c o nt in uo u sl y.

ONFIG & LIMITONFIG & LIMIT

ONFIG & LIMIT

ONFIG & LIMITONFIG & LIMIT

The CONFIG (Configuration o f P arameters) and LIMIT keys work together for system set up. The CONFIG function enables the operator to select six operational parame ters for both primary devices.

The LIMIT keys allow the op erator to set upper and lower, or clockwise and counterclockwise limits. Th e user simply sets the limit by pressing the INCRM or DECRM keys until the desired limit is shown on the display and then selects the ENTER key. To verify or set the current position of a device under control, t he user can press the CURRENT POSITION key.

POSITION & STEPPOSITION & STEP

POSITION & STEP

POSITION & STEPPOSITION & STEP

The POSITION and STEP functions work together to manually position the tower cross boom and/or turntable. Four POSITION keys and two STEP keys are available to ach ieve this con tro l.

USA:

Tel +1.512.835.4684 Fax +1.512.835.4729

Information presented is subject to change as product enhancements are made. Contact ETS Sales Department for current specifications.Information presented is subject to change as product enhancements are made. Contact ETS Sales Department for current specifications.

Information presented is subject to change as product enhancements are made. Contact ETS Sales Department for current specifications.

FINLAND:

Tel +358.2.8383.300 Fax +358.2.8651.233

ONLINE:

info@ emctest.com http://www.emctest.com

Test Site Hardw are

POSITION KPOSITION K

POSITION K

POSITION KPOSITION K

UP / CW

UP moves the tower cross boom upward. CW moves the turntable clockwise.

DOWN / CCW

DOWN moves the tower cross boom downward. CCW moves the turnt able counterclockwise.

STOP

STOP ceases movement of device.

POLARIZATION / FLOTATION/SPEED

HOR / UP/ FAST VERT / DN / SLOW

On a tower, pressing this button will toggle the tower cross boom between HORIZONTAL and VERTICAL polarization. On an air flotation turntable, pressing this button will toggle the UP (inflation) and DOWN (deflation) of the turntable top. On a two-speed turntable, pressing this button will toggle the speed of the turntable between FAST and SLOW. On a variable speed turntable, pressing this button will cycle the SPEED between four presets. The indicator lights will illuminate in a binary fashion to indicate the current preset speed selectio n i.e. first pres et OFF-OFF, second preset ON-OFF, third preset OFF-ON, fourth preset ON-ON.

STEP KSTEP K

STEP K

STEP KSTEP K

INC

INC moves the device up or clockwise.

DEC

DEC moves the device down or counterclockwise.

Positioning Controller

Front Panel Illustration – Model 2090 Positioning Controller

The controller will move the device in the desired direction as long as the key is pressed. The device will stop when the key is released.

OCOC

AL/REMOAL/REMO

AL/REMO

OCOC

AL/REMOAL/REMO

The Model 2090 can be operated manually from the front panel or remot ely via the GPIB port. When the Model 2090 is addressed via the GPIB port, the RMT indicator light will illumi nate and the ADDR indicator will flash to show b us activity. Pressing the LOCAL function key allows you to exit the remote mode. When the optional Hand Contr o l Unit (see Options, page 3) is used, all position changes will be recorded and displayed by the Model 2090 Controller.

UXILIARUXILIAR

UXILIAR

UXILIARUXILIAR

Four front panel keys are available t o control auxiliary devices. While in manual mode, you can activat e an auxiliary device by pressing the AUX CONTROL key that corresponds to the auxiliary device port. In remote mode, au x il i a ry d evi ces ca n b e a ct iva ted by us i n g the appro priate GPIB co mmand. The control lines are on/off output only. In order to use these four auxiliary lines, an in t er f ac e box that w il l perf o rm a cus t o m function and accept a fiber optic

Y CY C

Y C

Y CY C

TE OPERTE OPER

TE OPER

TE OPERTE OPER

ONTRONTR

ONTR

ONTRONTR

OLOL

TIONTION

TION

TIONTION

Model 2090

input, is needed. Contact ETS-EMCO Sales for details.

Features

Automatic Target Overrun Correction

The Model 2090 constantly monitors inertia-induced target overrun. If overrun on turntables or towers occurs, it is identified and tracked. Utilizing a special algorithm, the Model 2090 continually ad j usts s u bsequent positionings to minimize overrun, allowing for proper device positioning during tests.

Element Saving Limit Setting

To preven t damage to antenna elements which may accide ntally rotate into the ground plane or ceiling during polarization, the Model 2090 allows you to program two upper and two lower limit settings. These settings allow you to safely maximize antenna scan height in either horizontal or vertical polarization – especially useful with BiCo niLogs biconicals, log periodics, and other antennas with protruding elements.

Fiber Optic Input/Output Lines

The 2090 features fiber optic control lines to eliminate conducted noise. Each primary device cable contains two fiber