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api technologies corp. 3408T Series Installation & Operating Instructions Manual

Smartstep programmable attenuators
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IM-425
INSTALLATION & OPERATING
INSTRUCTIONS
Model 3406T & 3408T Series
SmartStep Programmable Attenuators
This documentation may not be reproduced in any form, for any
purpose unless authorized in writing by API / Weinschel, Inc.
© API / Weinschel, Inc.
Frederick, Maryland
2006
REV. 08/16

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Summary of Contents for api technologies corp. 3408T Series

  • Page 1 IM-425 INSTALLATION & OPERATING INSTRUCTIONS Model 3406T & 3408T Series SmartStep Programmable Attenuators This documentation may not be reproduced in any form, for any purpose unless authorized in writing by API / Weinschel, Inc. © API / Weinschel, Inc. Frederick, Maryland 2006 REV.
  • Page 2 IM-435 GENERAL This manual provides general installation instruc- tions and wiring data to be used as anaid in installing a API / Weinschel 3406T or 3408T Series SmartStep Programmable Attenuator into any system or application. Also included are spec- ifications and other technical data to help in the installation andoperation of your 3400T Series Smartstep Programmable Attenuator.

  • Page 3: Cell Configuration

    3400T Series SmartStep Programmable Attenuators These SmartStep attenuators feature an BUILT-IN SMARTSTEP DRIVER CIRCUITRY: internal microcontroller-based driver that provides a TTL-level digital interface for control of the attenuator relays. This card simplifies operation and interfacing requirements, while at the same time providing for greatly enhanced flexibility over past designs. User-selectable modes of operation include both parallel and serial Smartstep bus.

  • Page 4: Installation

    IM-425 INSTALLATION MOUNTING: Each Programmable Step Attenuator is supplied with two mount- ingholes (4-40 UNC-2B x 0.24 MIN DP) located on the bottom side of the attenuator. RF CABLE INSTALLATION: Care should be taken to prevent strain on the inter- connecting cables, since damage here may not always be apparent.
  • Page 5 3400T Series SmartStep™ Programmable Attenuators PARALLEL MODE OPERATION: In the parallel mode of operation, the Smartstep attenuator accepts TTL-level parallel data on the D0-D7 input data lines. Each data line controls a separate attenuation cell, where a logic 1 input (TTL high) engages the attenuation cell, and a logic 0 input (TTL low) bypasses the cell, providing a through path.

  • Page 6: Specifications

    IM-425 SPECIFICATIONS 50 Ω NOMINAL IMPEDANCE: dc to 6.0 GHz FREQUENCY RANGE: DRIVER INTERFACE: +12.0 to +15.0V Input Supply Voltage: TTL/CMOS compatible Control Signals: parallel/ I C serial Interface Modes: DC Characteristics (at 25 °C): Digital Interface: DRIVER INTERFACE: Parameter Specification V IL Low-level input V:...
  • Page 7 3400T Series SmartStep™ Programmable Attenuators CELL CONFIGURATIONS: Model Attenuation Cell Number Cells Range/Steps Increments (dB) (dB) 3406T-55 55/1 1, 2, 4, 8, 16, 24 3408T-55.75 55.75/0.25 0.25, 0.5, 1, 2, 4, 8, 16, 24 3408T-103 103/1 1, 2, 4, 8, 16, 24, 48* *48 dB cell comprised of two 24 dB cells INCREMENTAL ATTENUATION ACCURACY: Frequency...

  • Page 8: Physical Dimensions

    IM-425 PHYSICAL DIMENSIONS: “A” “B” 49.9 (1.93) “C” “D” Model No. No. Cells 3408T-X 136.1 (5.36) 123.4 (4.86) 7 EQ SPCS @ 15.20 (.60) = 106.7 (4.20) 128.5 (5.06) 3406T-X 105.7 (3.66) 93.0 (3.66) 5 EQ SPCS @ 15.20 (.60) =76.0 (3.00) 98.0 (3.86) NOTE: All dimensions are given in mm (inches) and are nominal, unless otherwise specified.
  • Page 9 3400T Series SmartStep™ Programmable Attenuators ACCESSORIES Model 8210 Smartstep Interface: The Model 8210 Smartstep Interface provides a flexi- ble, low cost solution for the operation of programmable step attenuators and other electromechanical devices under computer control. Designed to interface to Weinschel's new line of Smartstep Programmable Attenuators, the 8210 represents a new concept in device control applications for bench test and subsystem designs.
  • Page 10 IM-425 API / Weinschel Warranty PRODUCTS: API / Weinschel warrants each product it manufactures to be free from defects in material and workmanship under normal use and service any- where in the world. API / Weinschel's only obligation under this Warranty is to repair or replace, at its plant, any product or part thereof that is returned with transportation charges prepaid to API / Weinschel by the original purchaser within ONE YEAR from the date of shipment.
  • Page 11 3400T Series SmartStep™ Programmable Attenuators Notes:...
  • Page 12 IM-425 5305 Spectrum Drive, Frederick, Maryland 21703-7362 TEL: (301) 846-9222, 800-638-2048, FAX: (301) 846-9116 Web: www.weinschel.apitech.com, e-mail: weinschel-sales@apitech.com © 2006, API / Weinschel, Inc.

This manual is also suitable for:

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