Motorola MC9190-G, Руководство интегратора

Страница: 146 / 190

A - 18 MC9190-G Integrator Guide
Mobile Computer Pin-Outs
Figure A-8
Pin Locations
Data Matrix 10 mil 01234567890123450000
MRD=80% 12 in.
30.5 cm 24 in.
61.0 cm
Data Matrix 55 mil 123456789
MRD=80% 13 in.
33.0 cm 130 in.
330.2 cm
Data Matrix 100 mil 123456789
MRD=80% 20 in.
50.8 cm 210 in.
533.4 cm
Table A-8
SE4600 Decode Distances (Continued)
Symbology
Bar Code Content/
Contrast
Typical Working Range
@ 25 Ft-cd Minimum
Near Far
Notes:
1. At 23
o
C.
2. 6.5 inches achievable with near LED (on the right when facing the front of the engine) on and far LED off.
3. Test bar codes with 2 internal LEDs flashing with 1.2A peak current, at ambient light of minimum 25 foot-candle
in the plane of the bar code.
4. Mount reflective bar codes on white or black background with minimum 4" border. Luminance in the line-of-sight
direction should be 50-120 cd/mm
2
. Ensure there is no extraneous illumination or shadow on the bar code and that
it is centered within the aiming pattern.
5. Reading criteria: 3 successful decodes out of 4 consecutive frames after setting autoexposure.
6. Provide a baffle if needed to prevent stray light from getting into the sensor fields of view.
7. Distances are measured from the front face of the scan engine chassis.
8. Near range may be closer with shorter bar codes.
9. Dependent on length of bar codes.
Table A-9
Pin-Outs
PIN Number Signal Name Function
1 USB_GND USB
2 USB_D_PLUS USB
3 TXD RS232C
4 RXD RS232C
5 DCD RS232C
6 RTS RS232C
7 DSR RS232C
1
8
17 9