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INSTALLATION & OPERATING

INSTRUCTIONS

Model 3406T & 3408T Series

SmartStep Programmable Attenuators

IM-425

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.

08/1

6

IM-425 Model 3406T & 3408T-B.qxp 7/22/2006 2:37 PM Page 1

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Summary of Contents for 3406T Series

Page 1: ...rtStep Programmable Attenuators IM 425 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 IM 425 Model 3406T 3408T B qxp 7 22 2006 2 37 PM Page 1 ...

Page 2: ... Step Attenuators is designed for use inautomatic test equipment and OEM systems operating in the dc to 6 GHz frequency range Each cell contains a standard TO 5 type double pole double throw relay that provides a minimum loss or attenuated path for the RF signal which is controlled by a built in digital interface shown in Figure 1 2 IM 435 Figure 1 SmartStep Driver Circuitry Non Volatile Configura...

Page 3: ...tains non volatile configuration memory that is used to hold a wide vari ety of attenuator and driver dependant parameters including serial number attenuator cell dB values relay configurations and switching requirements which are all accessable via the Smartstep interface This frees the system designer from such low level details allow ing faster integration In either operational mode the microco...

Page 4: ... s RF connectors DEVICE INTERFACE BUS DIB CONNECTOR WIRING Figure 2 shows the connectors contact pin numbering scheme and the signal designator for signal present at each contact pin 4 IM 425 PIN 1 PIN 2 PIN 14 PIN 13 Name Pin Description VIN 1 dc Supply Voltage 12 to 15 V 1 VIN 2 dc Supply Voltage 12 to 15 V 1 GND 3 4 dc Return D0 SDA 7 Data Bit 0 isb I2C SDA D1 SCL 8 Data Bit 1 I2C SCL D2 5 Data...

Page 5: ...nicates over a two wire serial bus to the Weinschel Model 8210 Smartstep Interface The bus uses a clock SCL and data SDA line to send and receive programming and configuration information The messages sent over the bus use the software protocol as defined in the ACCESS bus V2 2 specification Base Protocol with Weinschel specific extensions to support the control of step attenuators StepAttn Protoc...

Page 6: ... ambient temperature derated linearly to 0 25 watt 71 C 50 watts peak 5 μsec pulse width 1 duty cycle POWER COEFFICIENT 0 005 dB dB watt RATED SWITCH LIFE 5 million cycles operations per cell 0 dBm CYCLING RATE 5 Hz maximum per relay TEMPERATURE 30 to 70 C CONNECTORS SMA female connectors per MIL STD 348 interface dimensions mate nondestructively with MIL C 39012 connectors INTERFACE CONNECTOR 14 ...

Page 7: ...8 16 24 48 48 dB cell comprised of two 24 dB cells CELL CONFIGURATIONS INCREMENTAL ATTENUATION ACCURACY Frequency Accuracy Range GHz dc 3 0 3 dB or 2 whichever is greater 3 6 0 4 dB or 3 whichever is greater MAXIMUM INSERTION LOSS dB Frequency 3206 55 3408 55 75 Range GHz 3408 103 dc 3 2 60 3 40 3 6 3 80 5 00 MAXIMUM SWR Frequency Range GHz SWR dc 3 1 30 3 6 1 45 IM 425 Model 3406T 3408T B qxp 7 2...

Page 8: ...n mm inches and are nominal unless otherwise specified Model No No Cells A B C D 3408T X 8 136 1 5 36 123 4 4 86 7 EQ SPCS 15 20 60 106 7 4 20 128 5 5 06 3406T X 6 105 7 3 66 93 0 3 66 5 EQ SPCS 15 20 60 76 0 3 00 98 0 3 86 IM 425 Model 3406T 3408T B qxp 7 22 2006 2 38 PM Page 8 ...

Page 9: ... Setup shown below CONTACTING API Weinschel In the event you re having difficulty or believe that the components are defective please contact API Weinschel immediately An apparent malfunction may be corrected over the phone by contacting the Customer Service Department at API Weinschel DO NOT send the product back to the factory without prior authorization RMA number When it is necessary to return...

Page 10: ...hat have been subject to improper or inadequate maintenance unauthorized modifications misuse or operation outside the environmental spec ifications for the product SOFTWARE PRODUCTS API Weinschel software products are supplied without representation or Warranty of any kind API Weinschel therefore assumes no responsibility and will not accept liability consequential or otherwise arising from the u...

Page 11: ...11 3400T Series SmartStep Programmable Attenuators Notes IM 425 Model 3406T 3408T B qxp 7 22 2006 2 39 PM Page 11 ...

Page 12: ...ive 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 IM 425 Model 3406T 3408T B qxp 7 22 2006 2 39 PM Page 12 ...

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