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RF shielded doors



The shielding characteristics of Comtest RF shielded doors are achieved using a double knife edge, matching quadruple beryllium copper finger contact strip. The RF shielded doors are equipped with a unique parallel closing mechanism and patented locking and latching system. All Comtest shielded doors are available in manual, semi- and full automatic operation. The standard range of swing and sliding doors consists of many different models and can be designed with a 50mm low threshold. In EMC applications both ferrites and absorbers can be affixed to the door leaf.


Benefits of an unique design

For the swing doors a double pivoting hinge, parallel closing system is used in order to ensure long life time of the double row finger stocks mounted in the doorframe. For service and maintenance the door mechanics can be reached by removing the front cover of the door. Since this is not an essential part of the shielding it facilitates all maintenance work without affecting the shielding performance of the facility.


Manual, semi- and full automatic operation

All the RF shielded doors can be delivered in manual, semi- and full automatic operation. Comtest semi- and full automatic RF shielded doors are 100% electrical operated. The benefit of electrical doors is that they are more reliable than pneumatic systems. In case of mains power breakdown, automatic doors can be operated from the internal rechargeable battery system or using a manual handle.


RF shielded door options

The following options are available for all RF shielded door models.
•   Manual, semi- and full electrical operation
•   Door status switch (inter lock) to connect test room entrance doors with RF amplifier systems
•   Security access system using keycard validation systems. The shielded door can be operated upon validation
    of the card or any other security checking system connected to the door electronics.
•   Non-conductive (internal) door handle for anechoic chamber applications
•   For high security applications the doors can be equipped with anti-burglary mounting materials
•   Door frame interface for integration with modular pan-type, sandwich or welded shielded enclosures
•   Removable access platform (slope)
•   Full automatic up/down platform for flat (threshold less) entrance.

      
 

Benefits of the RF shielded doors

Comtest doors are the most sophisticated RF shielded doors available in the market today. The benefits of the product range are:
•    Minimum threshold of 50mm
•    User-friendly operation
•    Low force manual opening system
•    Little maintenance required
•    High performance shielding effectiveness up to 40 GHz
•    Easy maintenance access from the outside of the shielded enclosure
 

RF shielded swing doors model 1766

These RF shielded swing doors have a unique friction free parallel closing system.  This double pivoting hinge 4-point latching system ensures long life time of the double row finger stocks mounted in the door frame. While operating the door no finger stocks are stressed. For service purposes the door mechanics can be reached by removing the outside cover of the door. Since this is not an essential part of the shielding it facilitates all maintenance work without affecting the shielding performance of the facility.
 

RF shielded swing door standard range

The shielded swing door standard dimensions are:
•    1766-0921: 900*2100mm
•    1766-1221: 1200*2100mm
•    1766-1521: 1500*2100mm

In addition to our standardized models all doors are available in customized dimensions to satisfy our customers’ individual requirements.

         
 

RF shielded sliding doors model 1752

These RF shielded sliding doors have a unique friction free parallel closing system.  This 4-point latching system ensures long life time of the double row finger stocks mounted in the doorframe. While operating the door no finger stocks are stressed. For service purposes the door mechanics can be reached by removing the outside cover of the door. Since this is not an essential part of the shielding it facilitates all maintenance work without affecting the shielding performance of the facility.
 

Safety of the RF shielded sliding doors model 1752

All full automatic doors are equipped with a safety system to prevent obstructed motion. A special key switch enables to lock the door in the open position without closing automatically.
 

RF shielded sliding door model 1752 standard range

The RF shielded sliding door odel 1752 standard dimensions are:
•    1752-0921: 900*2100mm
•    1752-1221: 1200*2100mm
•    1752-1521: 1500*2100mm

In addition to our standardized models all sliding doors are available in customized dimensions to satisfy our customers’ individual requirements.


 

Large RF shielded sliding doors model 1755

These large RF shielded sliding doors have a unique friction free parallel closing system.  This multiple (>6) point latching system ensures long life time of the double row finger stocks mounted in the door frame. While operating the door no finger stocks are stressed. For service purposes the door mechanics can be reached by removing the outside cover of the door. Since this is not an essential part of the shielding it facilitates all maintenance work without affecting the shielding performance of the facility.
 

Safety of the large RF shielded sliding doors model 1755

All full automatic doors are equipped with a safety system to prevent obstructed motion. The operation of this door is done from a separate cabinet.  Push buttons are used to operate the RF shielded sliding door.  As long as the buttons are pushed the door will move in the given direction. Once the button is released the door will stop its movement immediately.
 

Large RF shielded sliding door model 1755 standard range

The large RF shielded sliding door model 1755 standard dimensions are:
•    1754-2424: 2400*2400mm
•    1755-3030: 3000*3000mm
•    1755-4040: 4000*4000mm


In addition to our standardized models all large sliding doors are available in customized dimensions to satisfy our customers’ individual requirements.
 

X-Y movement

For large EUT entrance the Comtest sliding door 1755-series can be used as a full automated entrance. Model 1755 doors or shielded gates are designed for mounting absorbers and / or ferrites onto the door leaf.  While operating the large RF shielded sliding door will have a typical “X-Y’ movement. The X-movement travel distance is influenced by the length of the absorbers attached to the door leaf.  The Y-movement travel distance is influenced by the width of the door leaf.

For those large sliding doors who don’t have absorbers or ferrites on the door leaf model 1756 is best suited. This special door model has little X-movement travel and can be installed in small corridors. A typical application for the sliding door model 1756 is a reverberation chamber or an EMP / High Voltage test room.
 

RF shielded sliding door model 1755 features

RF shielded sliding doors model 1755/1756 have the following features:
•    Semi and Fully automatic (100% electrical) versions with PLC control
•    Friction free parallel closing system for extended lifetime
•    Six-, eight- or ten-point latching system
•    Electrical operation ensures smooth and stable operation
•    Minimal threshold of 50mm


Threshold less entrance

To achieve a flush entrance Comtest RF shielded sliding doors can be installed with a up/down platform or a manual removable slope. The up/down platform is operated from the door control cabinet.