Electrical Specifications; System Requirements; Electrical System Block Diagram - Code Reader CR8000 Integration Manual

4 - Electrical Specifications

4.1 – System Requirements
Power Supply: The CR8000 is powered from the host via the V
pins. V must be within the range specified in Section 4.15 when measured
in
at the decoding board. V must be maintained with varying loads, such as
in
when the illumination is turned ON and OFF.
Host Ribbon Cable (FFC) (CR8011 and CR8012): The impedance of
the cable for the USB data lines should be 90 ohm differential. For 3.3V
operation, a Ribbon Cable of no more than 6.0" in length can be used with a
0.28 mm (0.011") trace width and 0.3 mm trace thickness.
Scan Engine to Decode Board Flex Cable (FPC): When leveraging a
non-bracketed design, care should be taken to alleviate bend stress on the
Flex Cable, which could lead to damage of that cable. The minimum bend
radius for this cable is 2.0 mm. Drawings can be provided upon request to
aid in design. Flex Cable length should not exceed 6.0".
4.2 – Electrical System Block Diagram
The CR8000 Decoded Scan Engine is a complete barcode scanning
system that can be easily integrated into any device.
The block diagram below shows the main components of the system
(CR8011/8012).
RIBBON CABLE (RS232/USB)
RS232 Polarit/NU
V
IN
GND
RXD/USB D-
TXD/NU
CTS/USB D+
RTS/NU
PwrDwn
nBeeper
nGoodRead
nWakeUp
nTrigger
NU = Not Used on USB Model
C005383_10 CR80XX Integration Guide
and Gnd Power Sequencing: There is no special power sequence needed for the
in
CR8000 as long as the max and min voltage and current specifications are
met. However, if the voltage on a pin is greater than V
when powering on, then current will flow from the pin to V
the pull up resistors.
Thermal Requirements: The operating temperature range for the CR8000 is
-20ºC to 55 ºC (-4ºF to 131ºF) ambient air.
FLEX CABLE
Illum. Control
DECODE
Image Control
PCBA
Image Data
Power
I2C Bus
OPTICAL
ENGINE
, such as
in
through
in
12