22 Section 5. Specifications
Performance
(Continued)
Maximum leakage 6 pA
Maximum leakage drift ± 0.2pA over 30 minutes
Base accuracy Follows ICRU 83 guidelines for the QA process
Beam on/off detection Active for diode detectors and reference input
Pulse counting Reports number of radiation pulses in each update
Environment Operating
• Ambient temperature: 15 °C to 35 °C (59 °F to 95 °F)
• Relative humidity: 10 to 90%, non-condensing
Storage
• Maximum temperature: -30 to 63 °C (-22 to 145 °F)
• Maximum relative humidity: 85%, non-condensing
Maximum storage time under these conditions is assumed
to be 15 days.
Shipping
• Maximum temperature: -30 to 63 °C (-22 to 145 °F)
• Maximum relative humidity: 95%, non-condensing
Maximum shipping time under these conditions is
assumed to be 7 days.
Physical Dimensions 29.2 cm (W), 56.0 cm (L) x 2.9 cm (H)
Weight 5.6 kg (12.4 lbs.)
Array housing material Polymethylmethacrylate (PMMA)
Thermistors 6 in diode array area
Template Light field alignment 5 x 5 cm, 10 x 10 cm, 20 x 20 cm, and measurement
perimeter
Detector alignment Alignment marks on template and diode grid aligned to
within 0.5 mm
Calibration marks Alignment marks for array calibration steps (top and
bottom)
Maximum measurement
area (excluding corners)
26 x 32 cm
Power Main supply 100 - 240 VAC, 50 to 60 Hz.
Device input 16.0 VDC to 18.9 VDC.
Typical operating current 500 mA
Typical operating power 9 W
Connectors/
indicators
Power and data 8 pin DIN, provides power to MapCHECK 3 and bi-direc-
tional serial data between computer and MapCHECK 3
LED One LED on electronics end panel. See Status LED on
page 19.
Electrical
Equipment
Safety Requirements IEC 61010-1
EMC Requirements EN 61326-1 for emissions and EN 61000 for immunity
Service Life 10 years at 1 kGy/year
Category Characteristic Specification
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