Model 3200T, 3201T, 3205T, 3206T, 3209T SmartStepTM Programmable Attenuators dc to 2.0/3.0 GHz 1 Watt Greatly Simplifies OEM & System Design! CELL CONFIGURATIONS: Model Number Features o Widest Selection of Attenuation Ranges and Steps Sizes o Built-In TTL\CMOS Interface\ SmartStep Driver Circuitry o High Quality Construction and Connectors o Special Configurations Available Upon Request - Custom Cell/Step Size Configurations - 3.0 GHz and Higher Frequencies Description Weinschel Corporation SmartStepTM line of intelligent programmable step attenuators with a built-in digital interface are designed to simplify the control and integration of these devices into subsystem and bench applications. This series of Programmable Step Attenuators is designed for use in automatic test equipment and OEM systems operating in the dc to 2 GHz frequency range. These models are available in many standard attenuation ranges and cell configurations. 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. Microstrip circuitry and special compensation techniques produce flat attenuation versus frequency characteristics. The microstrip construction, using thick-film circuit elements, ensures product uniformity. To minimize RF leakage, the 3200T Series Attenuators are provided with gold-plated contact areas and feedthrough filters at each control terminal. Specifications NOMINAL IMPEDANCE: 50 FREQUENCY RANGE: dc to 2.0 GHz: 3200T-1, 3200T-2, 3201T-1, 3201T-2, 3205T-1, 3205T-2, 3205T-3, 3206T-1, 3209T-1 dc to 3.0 GHz: 3200T-1E, 3200T-2E, 3201T-1E, 3205T-3E, 3206T-1E, 3209T-1E NO. Cells Attenuation Range/Steps (dB) Cell Increments (dB) 3200T-1 3200T-1E 8 127/1 1, 2, 4, 8, 16, 32, 64* 3200T-2 3200T-2E 8 63.75/0.25 3201T-1 3201T-1E 5 31/1 3201T-2 5 120/10 10, 20, 30, 60** 3205T-1 4 70/10 10, 20, 20, 20 3205T-2 4 55/5 5, 10, 20, 20 3205T-3 3205T-3E 4 1.5/0.1 0.1, 0.2, 0.4, 0.8 3206T-1 3206T-1E 6 63/1 1, 2, 4, 8, 16, 32 3209T-1 3209T-1E 10 64.5/0.1 0.25, 0.5, 1, 2, 4, 8, 16, 32 1, 2, 4, 8, 16 0.1, 0.2, 0.4, 0.8, 1, 2, 4, 8, 16, 32 *64 dB cell comprised of two 32 dB cells **60 dB cell comprised of two 30 dB cells MAXIMUM SWR: Freq Range (GHz) dc - 0.2 0.2 - 2 2-3 3200T-1 3200T-1E 3201T-X 3200T-2 3200T-2E 3205T-X 3206T-X 1.30 1.25 --- 1.20 1.20 1.40 1.25 1.25 --- 3201T-1E 3209T-1 3209T-1E 3205T-3E 3206T-1E 1.20 1.20 1.30 1.35 1.35 --- 1.35 1.35 1.45 INCREMENTAL ATTENUATION ACCURACY: Frequency Accuracy Range (GHz) dc - 0.5 0.5 - 1 1 -3 + 0.2 dB or 0.5% + 0.2 dB or 1.0% + 0.3 dB or 2.0% MONOTONICITY: dc to 3.0 GHz INCREMENTAL TEMPERATURE COEFFICIENT: 30 and 32 dB Cells: All other cells: 0.00005 dB/dB/C 0.00002 dB/dB/C 5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116 web: www.weinschel.com email: sales@weinschel.com 141 4/30/02 Specifications - Con't MAXIMUM INSERTION LOSS (dB): Frequency Range (GHz) 3200T-1 3200T-2 3200T-1E 3200T-2E 3201-1 3201-2 3205T-X 3201T-1E 3205T-3E 3206T-1 3206T-1E 3209T-1 3209T-1E 2.80 3.50 4.25 4.75 --- 2.00 2.70 3.00 3.50 4.30 1.80 2.40 3.00 3.75 --- 1.80 2.30 2.80 3.30 --- 1.25 1.75 2.25 2.50 3.40 2.00 2.70 3.30 4.00 --- 1.50 2.00 2.50 2.80 3.70 3.50 4.50 5.60 6.70 --- 3.00 3.50 4.00 4.50 5.50 dc - 0.5 0.5 - 1.0 1.0 - 1.5 1.5 - 2.0 2.0-3.0 POWER RATING: 1 watt average to 25C ambient temperature, derated linearly to 0.25 watt @ 71C. 50 watts peak (5 sec 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 DRIVER INTERFACE: Input Supply Voltage: Control Signals: Interface Modes: DC Characteristics (at 25 C): Parameter VIL Low-level input V: +12.0 to +15. V TTL/CMOS compatible parallel/ I2C serial Specification -0.5V min, 0.8V max VIH High-level input V: IPU VIN IIN Pullup current 50 mA min, 400 mA max Supply Voltage: +12.0 to +15.0V Supply current: (digital section) Supply current: 25 ICELL 2.0V min, 5.25V max 15 mA (per cell) continuous TEMPERATURE RANGE (Operating): -20C to +70C CALIBRATION: Test data is available at additional cost. CONNECTORS: SMA female connectors per MIL-STD-348 interface dimensions - mate nondestructively with MIL-C-39012 connectors. INTERFACE CONNECTOR: 14 pin .025 square post header on .1 center. Mates with Amp connector 746285-2 or equivalent. CONSTRUCTION: Housing: Connectors: WEIGHT: 142 4/30/02 Aluminum Stainless steel body and beryllium copper contacts. 3200T-X 3201T-X 3205T-X 3206T-X 3209T-X 165 132 132 132 218 g g g g g (8.4 (7.3 (7.3 (7.3 (9.7 oz) oz) oz) oz) oz) ACCESSORIES SmartStep Interface: The Model 8210A SmartStep Interface provides a flexible, 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 8210A represents a new concept in device control applications for bench test and subsystem designs. The 8210A provides a high-level interface from various industry standard communications interfaces, including IEEE-488 and RS232/RS422/RS485, to the SmartStep's serial Driver Interface Bus. CONTROL CONFIGURATION: The SmartStep attenuators feature an 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 flexability over past designs. User-selectable modes of operation include both parallel and serial I2C bus. The parallel mode provides a simple, one-bit per relay on/off control with internal pullups for use primarily in single attenuator applications. This mode allows the attenuator to be controlled via a variety of methods, such as a TTL-level digital output port, or mechanical toggle switches. The I2C mode provides a two-wire serial bus structure and protocol for connecting a number of devices to a single host control interface, suitable for use in larger system and sub-system applications. The SmartStep contains non-volatile configuration memory that is used to hold a wide variety of attenuator and driver-dependant parameters, including serial number, attenuator cell dB values, relay configurations, and switching requirements, which are all accessable via the I2C interface. In either operational mode, the microcontroller enters an idle condition during periods of inactivity, turning off all on-board clocks, reducing EMI concerns, and lowering power consumption. On-board regulation for the digital circuitry allows the SmartStep to operate from a single input supply voltage. 5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116 web: www.weinschel.com email: sales@weinschel.com PHYSICAL DIMENSIONS: Model 3200T, 3201T, 3205T, & 3206T: "D" Model No. 3200T-X No. Cells 8 A 101.6 (4.0 B 34.8 (1.37) C 88.9 (3.50) D 95.2 (3.75) 3201T-X 5/4 76.2 (3.00) 22.1 (0.87) 63.5 (2.50) 69.8 (2.75) 3205T-X 4 72.4 (2.85) 22.1 (0.87) 46.2 (1.82) 52.6 (2.07) 3206T-X 6 81. 3+0.5 (3.20+0.02 24.0 (0.98) 68.6 (2.70) 75.18 (2.96) Model 3209T: NOTE: All dimensions are given in mm (inches) and are maximum, unless otherwise specified. 5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116 web: www.weinschel.com email: sales@weinschel.com 143 4/30/02