Weinschel C O R P O R A T I O N SmartStep Subsystem Design Example....CELLULAR/PCS FADING SIMULATION FRONT PA NEL REAR PA NEL Multi-Channel Attenuator System BASE STATION AT1 8 6 MOBILE STATION 8 7 S A1 POWER COMBINER A4 POWER COMBINER AT3 AT5 6 4 5 AT6 3 2 3 AT4 5 4 1 AT2 A2 POWER 7 COMBINER AT7 6 OUT 2 5 S S Weinschel Corporation design and manufacturers multipath attenuation subsystems for fading simulation/emulation of cellular, 3G, GSM, PCS systems, laboratory testing of CATV, cable modem, and wireless components and systems. These subsystems integrate Weinschel SmartStep technology and other standard microwave and RF components to provide quick, simple, low cost design solutions. The subsystem illustrated features: ! 800-1900 MHz frequency range ! 16 Input Channels to 8 Output Channels ! RS-232 Serial Interface ! Wide Dynamic Range: 127/1 dB steps ! Weinschel 3200T SmartStep Programmable Attenuators Our new SmartStep technology streamlines system designs and device integration by providing a flexible bus interface and components that are easy to configure and control. 4 OUT 8 AT9 3 8 2 A1 POWER 7 COMBINER 1 6 S 4 AT11 10 11 AT12 AT13 12 13 AT14 3 2 9 AT10 5 AT15 AT16 14 15 16 1 TO AT1-AT16 Device Interface Bu (DIB) A5 POWER SUPPLY ASSY S1 POWER ON/OFF SWITCH/ INDICATOR +12 ± 1.7 V @ 3.4 A POWER ON/OFF Options: 50 & 75 Ω Systems; IEEE-488, RS-232, RS-422, RS-485 “SmartStep” Interface; Attenuation Range Up To 128.2 dB in 0.1 to 10 dB Steps; Wide Variety of Path Configurations (2x2, 4x16, 8x16, 8x32, et al); LCD Display and Front Panel/Local Control. 9/23/99 7 AT8 1 5305 Spectrum Drive, Frederick, MD 21703-7362 ! TEL: 301-846-9222, 800-638-2048 ! Fax: 301-846-9116 web: www.weinschel.com ! email: [email protected] A6 RS-232 INTERFACE PCB ASSY AC INPUT PWR IEEE-488 BUS XF1