Variable Attenuators Models 115A thru 119A Manual Step Attenuators dc to 18.0 GHz 2 Watt Choice of Type N or SMA Connectors Specifications NOMINAL IMPEDANCE: 50 FREQUENCY RANGE (add Model No. Prefix to Designate Range): All Models: dc to 4.0 GHz (AC) dc to 18.0 GHz (AF) STANDARD INCREMENTAL ATTENUATION RANGE: Model 115A: 0 to 9 dB in 1 dB steps Model 116A: 0 to 60 dB in 10 dB steps Model 117A: 0 to 69 dB in 1 dB steps Model 118A: 0 to 90 dB in 10 dB steps Model 119A: 0 to 99 dB in 1 dB steps Features o Safety Mechanical Stop - A mechanical stop between maximum and 0 attenuation positions on all models prevents damage to the mechanical drive as well as preventing large power changes that could cause damage to sensitive equipment. o Choice of Attenuation Ranges - Five standard attenuation ranges are available: 0-9 dB, 0-69 dB, and 0-99 dB in 1 dB steps, and 0-60 dB and 0-90 dB in 10 dB steps. o Broadband - All models are available in a choice of 2 frequency ranges: dc-4 and dc-18 GHz. o Right-Angle Drive - The center conductor of the connector is perpendicular to the control shaft, offering greater flexibility of applications: panel mounting or bench setup. All models are bidirectional. o Custom Configurations Available Upon Request. o Low Deviation from Nominal Value - These Mini Step Attenuators have flat frequency response over specified bands and excellent attenuation accuracy. Deviation from nominal value is low at all settings. o Excellent Repeatability and Long Life Switch Repeatability is better than 0.05 dB to 18.0 GHz for over 1,000,000 switchings of the drum. Description The Aeroflex / Weinschel Models 115A through 119A are a series of broadband, step attenuators in a right-angle drive configuration, where the center conductor of the connector is perpendicular to the control shaft. They feature excellent performance characteristics suitable for use in high reliability 50 ohm systems and applications requiring extra-small components for the precision control of power in discrete steps. They can be used either as input or output attenuators in signal sources, receivers, field strength meters, spectrum analyzers, etc. 78 MAXIMUM SWR (Models 117A & 119A): Frequency Range (GHz) 117A & 119A 115A, 116A & 118A 1.35 1.50 1.70 1.25 1.60 1.60 dc - 4 4 - 12.4 12.4 - 18.0 POWER RATING: 2 watts average to 25C ambient temperature, derated linearly to 1 watt @ 54C. 200 watts peak (5 sec pulse width; 0.5% duty cycle) POWER COEFFICIENT: < 0.005/dB/dB/watt TEMPERATURE COEFFICIENT: < 0.0004/dB/dB/C TEMPERATURE RANGE: Operating: 0C to +54C Nonoperating: -54C to +54C INCREMENTAL PHASE SHIFT: ~0.5 per dB x f(GHz) REPEATABILITY: Better than 0.05 dB across frequency band for switch life. SWITCH LIFE: Over 1,000,000 steps INDEXING: 36 MAXIMUM INSERTION LOSS (dB): Model Number CONN Type Frequency Range (GHz) dc-4 dc-18 115A N SMA 0.3 0.3 0.7 1.0 116A N SMA 0.3 0.4 0.7 1.0 117A N SMA 0.5 0.6 1.2 1.5 118A N SMA 0.4 0.5 0.8 1.0 119A N SMA 0.5 0.6 1.2 1.5 5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116 web: www.aeroflex.com/weinschel s email: weinschel-sales@aeroflex.com Revision Date: 4/29/11 Variable Attenuators Specifications (Con't): TEST DATA: Insertion Loss data is supplied as follows. Other test data can be supplied at additional cost. dc to 4 GHz: At 50 MHz and 4 GHz dc to 18 GHz: At 50 MHz, 4, 8, 12 and 18 GHz RELATIVE HUMIDITY: 95% ALTITUDE: to 10,000 ft. SHOCK (non-operating): 8 g's, 100 ms, 1/2 sine DRUM CONFIGURATIONS: Single Drum: 115A, 116A, 118A Dual Drum: 117A, 119A VIBRATION (non-operating): 5 to 8 cps, 0.20 inch double amplitude 8 to 15 cps, 0.10 inch double amplitude 15 to 55 cps, 0.36 inch double amplitude Supported rigidly front and back SHAFT ROTATION: Clockwise for increasing attenuation CONSTRUCTION: Materials: Housing: aluminum alloy, clear irridite, MIL-C-5541. Dust Cover: Painted aluminum alloy Drum: Aluminum alloy Shaft: Passivated stainless steel Connector: Stainless steel and beryllium copper contacts. CONNECTOR: SMA and Type N connectors per MIL-STD348 interface dimensions - mate nondestructively with MIL-C-39012 connector. Connector sex is optional as follows: Type/Description Connector Options 1 SMA, Female 2 SMA, Male 3 Type N, Female 4 Type N, Male WEIGHT: 115A 340 g (12 oz) 116A 340 g (12 oz) 117A 760 g (27 oz) 118A 450 g (16 oz) 119A 880 g (31 oz) INCREMENTAL INSERTION LOSS (+dB): Model Number dB Range Frequency Range (GHz) dc-4 dc-18 115A 1-9 0.3 0.5 117A 1-9 10-19 20-29 30-39 40-49 50-59 60-69 0.3 0.7 0.9 1.0 1.1 1.2 1.3 0.5 1.0 1.2 1.4 1.5 1.7 1.9 119A 1-9 10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89 90-99 0.3 0.7 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 0.5 1.0 1.2 1.4 1.5 1.7 1.9 2.1 2.3 2.5 116A 10 20 30 40 50 60 0.3 0.3 0.4 0.5 0.7 0.8 1.0 1.0 1.0 1.2 1.5 1.8 118A 10 20 30 40 50 60 70 80 90 0.3 0.3 0.4 0.5 0.7 0.8 0.9 1.0 1.2 1.0 1.0 1.0 1.2 1.5 1.8 2.1 2.3 2.5 MODEL NUMBER DESCRIPTION: Example: AC116A - XX - XX Frequency Range (GHz) Basic Model Number Maximum Attenuation Value (dB) Connector Options* 1st digit is J1 side (left) 2nd digit is J2 side (right) 79 5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116 web: www.aeroflex.com/weinschel s email: weinschel-sales@aeroflex.com Revision Date: 4/29/11 Variable Attenuators PHYSICAL DIMENSIONS: Model No. 119A 118A 117A 116A 115A DIM A 58.7 (2.31) 29.0 (1.14) 54.0 (2.11) 23.9 (0.94) 23.9 (0.94) NOTE: 80 DIM B 111.3 (4.38) 57.7 (2.27) 101.1 (3.98) 47.5 (1.87) 47.5 (1.87) CONN Type Type N, Male Type N, Female SMA, Male SMA, Female DIM C 20.6 (0.81) 18.3 (0.72) 9.4 (0.37) 7.9 (0.31) All dimensions are given in mm (inches) and are maximum, unless otherwise specified. 5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116 web: www.aeroflex.com/weinschel s email: weinschel-sales@aeroflex.com Revision Date: 4/29/11