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Technical content
Features
o High Reliability - Repeatability better than 0.1 dB over frequency range and life. Weinschel patented detent mechanism, tested to 1,000,000 operations at +75°C, operates dependably even down to -40°C. o Product Uniformity - High volume fabrication tech- niques, including injection molding, stamping, broaching and thick film printing ensure a cost effective and uniform product. o Low Frequency Sensitivity - Typically 0.1 to 0.2 dB up to 2.5 GHz. o Shock Resistant - 100% spring contact system with- stands mechanical and thermal shock and eliminates the need for epoxy or solder. o Wide Selection - Wide choice of attenuation ranges and increments in standard stock models. Single and dual drum configurations available. o Knob Included - Knobs for both single and dual drum models are included with every attenuator. Characters are screened on the face of the knob insert which is coated with a clear layer of epoxy for protection. Special Configurations Some modifications to the basic configuration of the 3000 Series can be made during manufacturing. Examples of these special configurations are shafts having special lengths and ends; clockwise shaft rotation; modified mount- ing arrangements; and provisions for add-on items such as concentric potentiometer and ganged switches. Specifications NOMINAL IMPEDANCE: 50 Ω FREQUENCY RANGE: dc to 6.0 GHz INCREMENTAL ATTENUATION RANGE/STEPS: Model 3053: 0-10 dB in 1 dB steps Model 3054: 0-70 dB in 1 dB steps POWER COEFFICIENT: < 0.006 dB/dB/watt TEMPERATURE COEFFICIENT: 0.0004 dB/dB/ °C TEMPERATURE RANGE: Operating: -40°C to +65°C Non-Operating: -54°C to +85°C Model Accuracy 3053 + 0.3 dB 3054 + 0.3 dB or 2% (dc to 3 GHz) + 0.3 dB or 3.5% (3 to 6 GHz) ATTENUATION ACCURACY: POWER RATING: 1 watts average @ 25°C ambient temperature, derated linearly to 0 watts @ 65°C. 100 watts peak (5 μsec pulse width; 0.5 % duty cycle). CONNECTOR: SMA female connector per MIL-STD-348 interface dimensions - mate nondestructively with MIL-C-39012 connector. SHAFT ROTATION: counter clockwise for increasing attenuation STEP ANGLE: 32.7° DRUM CONFIGURATIONS: Single Drum: 3003, 3006, 3007, 3053 Dual Drum: 3010, 3014, 3054 MAXIMUM SWR & ZERO INSERTION LOSS: Model Frequency (GHz) SWR Loss (dB) 3053 dc - 3.0 1.30 < 0.3 3054 dc - 3.0 1.30 < 0.8
5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-91 16
web: www.weinschel.apitech.com s email: weinschel-sales@apitech.com 142 Revision Date: 08/03/2016 Variable Attenuators SWITCHING LIFE: 1,000,000 steps REPEATABILITY:+0.1 dB over frequency range and rated life ROTATION STOPS: Supplied on 10 dB step drums (not supplied on 1 dB drums). INCREMENTAL PHASE SHIFT: ~0.25° per dB x f(GHz) CONSTRUCTION: Shafting and external hardware and connector shells: CRES Type 303, per ASTM-A582 passivated per QQ-P-35. Housing: AL ALLOY Gold Flash. Knob is included with each unit. TEST DATA: Test data is available at additional cost. WEIGHT: Single drum: Net 125 g (4.4 oz) Dual drum: Net 201 g (9.9 oz) 1.10 MAX (27.94) PHYSICAL DIMENSIONS: DUAL DRUM SINGLE DRUM