DuoBase System


The dLW139.153-75D6 Flexure Table system combines our ET-139 permanent magnet field shaker and dPA-153 amplifier together with our 6 inch square Flexure suspension Table. This combination provides a large mounting surface with increased load carrying capacity for larger or heavier than normal test specimens not requiring the force of a larger shaker system. The unique flexure suspension table guidance eliminates the requirement for the oil found in slip table systems. This oil-less design allows operation at other than the horizontal orientation, and adds increased suspension guidance reducing the effects of heavy and off-center loads on the shakers armature suspension system.. The Table flexures are fully rated for 1 inch p-p operation, and the shaker can be uncoupled from the table for operation in its normal vertical orientation with specimens mounted directly to the shakers armature.

The air cooled dPA-153 dLAB shaker amplifier delivers full system performance while minimizing power and amplifier cooling requirements. The amplifier's multi-function digital display provides amplifier operational status as well as system peripheral and complete vibration system operational diagnositcs. Built in shaker-specific current limiting and full internal, system and external electrical interlock connections and logic help protect the system and test specimen from accidental abuse.

General Specifications
Sine force 75 lbs force pk
Random force 50 lbf rms random
Shock force 150 lbf pk shock
Frequency Range: 2.0 to 6,500 Hz
Maximum Acceleration:
        Horizontal, w/ Slip Table

        Vertical, no Slip Table

20 g pk, bare table
5.5 g pk, 10 lb. load
3.2 g pk, 20 lb. load

75 g pk, bare table
38 g pk, 1 lb. load
13 g pk, 5 lb. load
Maximum Displacement: 1.0 inch pk-pk, bare table
Cooling: Amplifier: forced air
Shaker: cooling vacuum
Power Requirements: 1,750 VA @ 120, 200-240V, single phase 50/60 Hz
System Components
ET-139 Electrodynamic Shaker
dPA-153-9 dLAB Digital Power Amplifier
DB-139 - DuoBase
CB-152 Cooling Blower
Interconnect Cables and Hoses



System Options
VL-144/VL-145 Vibration Controller
SC-121 Sine Servo Controller
SG-135 Manual Sine Controller
Rack Cabinet
Accelerometer Package
SI-139 Base Isolation Mounts