Intermec ED40, Руководство по интеграции, Страница: 107 / 155

Appendix B — EA20X Imager
ED40 Decode Board Integration Guide 95
Imager Ribbon Cable Connecting to ED40
The ribbon cable that connects the ED40 decode board to the imager
(unmounted) is a 21-pin ribbon cable connecting to a connector with tin contacts
manufactured by Molex (P/N 54393-2182).
Intermec recommends using a shielded flex cable to contain emission from high
speed clock signals in this cable.
Imager Ribbon Cable Connecting to ED40: Because of the way the shield is grounded, the
orientation of this cable is not symmetrical. The shield is tied to PIN1 which makes the cable
orientation important. the text “DB1”is printed on the end of the cable that goes to the
decode board. The other end goes to the imager.
0.660 cm ±0.005
(0.260 in ±0.002)
2X
4X 0.762 cm (0.300 in)
4X 0.635 cm (0.250 in)
2X 0.127 cm (0.050 in)
4X R 0.020 cm ±0.010
(0.008 in ±0.004)
5.080 cm
(2.000 in)
0.635 cm
(0.250 in)
0.635 cm
(0.250 in)
Overall thickness
0.020 cm ±0.003
(0.008 in ±0.001)
Vendor Part Marking
Orientation
Note: If you are designing your own flex cable connecting the imager to the
decode board, Intermec recommends that the cable be as short as possible.
Maximum length is 10.16 cm (4.00 in).