• GTEM 750 – 800 – 800F
  • GTEM 750 – 800 – 800F
  • GTEM 750 – 800 – 800F
  • GTEM 750 – 800 – 800F
  • GTEM 750 – 800 – 800F
  • GTEM 750 – 800 – 800F
  • GTEM 750 – 800 – 800F

GTEM 750 – 800 – 800F

The GTEMCELL GTEM-750/800 is a TEM waveguide with the upper-frequency limit extended to the GHz range. It is under consideration as an alternative measurement facility for both radiated emission and immunity measurements. It is included in the standard IEC 61000-4-20 “Emission and Immunity Testing in Transverse Electromagnetic (TEM) Waveguides”.

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TEST STANDARDS:

GTEM 750

GTEM 800

GTEM 800F

GTEM Power vs. Field

Manipulator brochure

SPECIFICATIONS

GTEMCELL GTEM 750 Family
 The GTEM cell is, in principle, a tapered coaxial line (offset septum plate), which is terminated by a hybrid combination of discrete resistors and RF absorber to achieve a 50 Ohm broadband match. It is applied for the measure of Radiated emissions and radio frequency field-immunity test. The GTEMCELL GTEM 750 family consist of  the:GTEM-750  made with  65cm  pyramidal carbon-foam absorbers (RAM).GTEM-800  made with  51cm EMC Truncated pyramidal absorbers (RAM).GTEM-800F  made with  Ferrite tiles on the bottom and 45cm Hybrid pyramidal carbon-foam absorbers (RAM).
 

GTEM 800 –  Main Technical Specifications / Max EUT Size
Frequency range 0,01 MHz – 20GHz*
Septum Height [mm]: 800
Max EUT Size (LxWxH)cm 62x62x50
Defined test Vol. within 6dB 26,5×26,5×26,5
Typical VSWR 1:1,2
Typical VSWR at critical frequency <1:1,5
Max Input power, W continuous/*pulsed 1KW/*2,5Kw
Input connector 7/16 or N female
Nominal impedance 50
Window in the door Diam.250 mm.
   
Mechanical Dimensions
Outer LxWxH [cm]: 400x220x150
Door WxH [cm]: 60×60 (clear passage)
Weight Kg. Approx. 500
Wheeeled undercarriage 70cm high
 

Electrical Specifications
Mains connectors Fix/CEE
Main Switch 16A magneto-thermal
Input Socket plug 16Aac (Single phase + ground) IEC
Output Socket EUT tape 16Aac (Single phase + ground) Schuko
Additional EUT sockets Optional
Ground connection M6 bolt
AC filter wires (Single PH+Ground) 16Amp. 2 wires
Channel for fiber optic leads 3 couples
RF feed-thru connector N.1 N-type double female
RF feed-thru SMA type connectors N.2 SMA type double female
Secondary EMI filter AC/DC N.1 10A 250V.
   

Electrical Equipment / Options
AC filter 30A/2 wire (2PH+Ground)  
AC filter 16A/4 wires (3PH+N+Ground)  
Electrical safety interlock  
Indoor lighting 20W LED  
9-poles signal filter (DB9)  
25-poles signal filter (DB25)  
Channel for fiber optic leads (3 couple)  
Additional RF feed-thru N-type connector  
Additional RF feed-thru SMA type connector  
RJ11 (RJ9) feed-thru connector  
Technical panel pre-drilled for options  
Video camera system  
   

Mechanical Equipment / Options
Gas / Water feedthrough plates  
Honeycomb panel  
Fans N.1 12x12cm  
Empty Technical panelGTEM-750 DatasheetGTEM-800 DatasheetGTEM-800F Datasheet  GTEM´s Main differences from competitors:
  • Trolley with wheels and brakes, one person alone can move the cell!
  • Unique inox steel construction for heavy tropical ambient (optional)
  • Door with 3 rows of gaskets (optionally up to 5 rows), no maintenance is necessary. (no CuBe finger strips! that after some months breaks...)
  • Use of hi-power ceramic BeO resistors up to 4-6GHz 100-200W ea. and 2,5KW peak power resistance.
  • Over dimensioned Heatsink, No fans required also with Hi-power!
  • High transparency glass with high shielding performance
  • Spherical surface absorber to avoid phase delay of reflected signals
  • Unique flange transition from rectangular to coax line with a quick change of input connector: N, SMA, or 7/16 DIN
  • Strong and at the same time light structure reinforced with U bars.
  • The safe connection between the metal sheets with multi-grip special rivets and Ni-Cu-Ag gaskets 
  • Three (3) year warranty from the date of manufacturing
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