Motorola 7545MBWM Guía de usuario Pagina 299

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Internal Imager & Scanner Specifications D - 13
SE4500SR – Standard Range Imager
Parameter Specification
Power Requirements -
Input Voltage
3.3 V ± 0.3 V at 23° C
Operating Mode Supply Currents (conditions VCC=VCC_SENSOR=VCC_ILLUM = 3.3VDC)
(at 23° C):
Low Power
Idle
Image Acquisition
Illumination Enabled
Maximum Operating
Current
500 µA
18 mA
80 mA
200 mA
250 mA (aiming on during exposure, illumination enabled)
Maximum Sensor Power
Supply Noise* (at 23° C)
100 mVp-p (3.3 V, 10 Hz - 100 kHz) for decoding
30 mVp-p (3.3 V, 10 Hz - 100 kHz) for image capture
Optical Resolution SR focus: 5.0 mil (Code 39), 6.7 mil (PDF417)
*For better image quality in image capture applications, use an additional filter on
VCC_SENSOR. For additional
performance improvement, provide a separately regulated 3.3 V supply for the sensor.
Specular Dead Zone:
Illumination On
Illumination Off
Up to 20º depending on target distance and substrate glossiness
None
Skew Tolerance ± 60º
Pitch Angle ± 60º
Roll 360º
Ambient Light Immunity
(Sunlight)
9000 ft. candles (96,900 lux)
Imaging Sensor:
Image Resolution
Grey Scale
Field of View (FOV)
752 H x 480 V pixels (Wide VGA)
256 levels (8 bits per pixel)
SE4500-SR: 39.6º horizontal, 25.7º vertical
Focusing Distance from
Front of Engine (SR)
8 in. / 20.3 cm
Aiming Element:
Visible Laser Diode (VLD)
Central Dot Optical Power
Pattern Angle
655 ± 10 nm
0.6 mW (typical)
40º horizontal, 30º vertical
Illumination System:
LEDs
Pattern Angle
625 ± 5 nm (dominant wavelength)
60º x 40º at 80% center intensity
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