Turntable TT 2.0 SI – Introduction
Turntables for semi anechoic chambers are designed to be suitable for a ground plane floor, such as used for 3m, 5m or 10m fully compliant SACs. The disk is integrated flush in the floor and electrically contacted to the ground plane potential. The typical maximum payload is 1.0t and the minimum required floor height is 150mm.
The TT 2.0 SI turntable is specifically designed for installation either at intermediate levels in electromagnetic absorption chambers or in open areas. The base plate is available in stainless steel. If a ground plane exists, and the carrying plate is made of steel, then the adapter contact ring with a quadratic rim can be supplied. A 0.2m diameter opening in the centre of the turntable provides the capability to insert a power supply for testing. Removable braces can be installed if necessary. The GPIB (IEEE 488) bus, when operated with the SCU/MCU Controller, provides an additional control option for all functions.
Turntable TT 2.0 SI – Technical data
| Features | Figures |
| Diameter | 2.0m |
| Permissible load | 1,000kg |
| Height | 142mm |
| Material carrier plate | stainless steel |
| Rotating speed | adjustable between 0.5 to 2.0rpm |
| Positioning accuracy | ±1° |
| Rotating angle | +400°/–200° |
| Remote control | via IEEE interface |
| Control cable | fibre optic line |
| Turntable drive | belt drive, non metallic |
| Motor | brushless DC motor 150W |
| Drive unit body | shielded and suppressed below EN 55022 Class B |
| Current consumption | max. 2A |
| Voltage | 208 V – 230V, 50/60 Hz, single phase |
| Temperatur range for operation | –10°C … +35°C |
| Concentricity tolearnce | ±3mm |
| Elevation tolerance less than | 5mm |