NM20216A-F
17
Technical data
1
• Location: inside main electronics cabinet, integrated to the VME
subrack
1.4.5.
Main iIsolation transformers
• Number of units: 3 (MEG, Stimulus, 3D digitizer)
• Primary: 100 / 115 / 120 / 200 / 230 / 240 V~ 50/60 Hz
• Secondary: 230 V~. For stimulus cabinet same as primary.
• Power rating: 2 kVA (MEG), 3.5 kVA (stimulus), 650 VA (3D
digitizer)
• Safety isolating, approved for medical electrical equipment
• Permanent installation
• Primary fuses: in main electricity distribution panel of the building
(customer’s responsibility). Recommendation 16 A slow (200/230/
240 V), 30 A slow (100/115/120 V)
1.5.
Filter Unit Cabinet and Electronics Cabinet
1.5.1.
Filter unit cabinet
• RF filter cutoff for all signals: 130 kHz, –20 dB/octave
• Maximum signal levels to any feedthrough input/output:
±
15 V
• Dimensions and weights: see chapter 2
1.5.2.
MEG Electronics cabinet
• Cabinet type: Schroff HF1
• Cabinet RF attenuation: –90 dB @ 30 MHz, –70 dB @ 300 MHz, –
50 dB @ 1 GHz
• RF mains filter: 12 A 250 V~ dual filter (L,N)
• Mains distribution unit with manual circuit breakers for subsystems
• Power failure release switch with thermal overcurrent protection
(10 A)
• Filtered power outlets inside cabinet, max. current: 10 A in total
• Mains power: via a dedicated isolation transformer (see 1.4.5) and
harmonic filter, permanent installation
• Cooling: forced convection, air flow from base plate (dust filtered) to
top cover (equipped with temperature-controlled fans)
• Dimensions and weights: see chapter 2
