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D027173_07 CR821X Dual Board Decoded Scan Engine Integration Guide
4.10 – Image Capture Timing Diagram
Image acquisition can be started from either the nTrigger line or via a
communications channel command. The time required to capture an
image can vary depending on the size of image selected, the confirmation
time configuration, and where the imager is in the capture cycle. The
time to decode an image can depend on the image quality, complexity
of the barcode, etc. The maximum time spent trying to decode an image
defaults to 320ms and can be controlled by a configuration command.
T
TMIN
T
TCT
TRIGGER ACCEPTED
IMAGE CAPTURE COMPLETE
T
IC
Image Capture and Decode Timing
nTrigger
Code flex cables have the following characteristics:
1:
Fabricated to the following specifications:
• IPC-6013 (Generic Performance Specification
for Printed Boards)
• IPC-SM-839 (Pre and Post Solder Mask Application
Cleaning Guidelines)
• IPC-SM-840 (Qualification and Performance of
Permanent Polymer Coating for Printed Boards)
• IPC-2615 (Printed Board Dimensions and Tolerances)
• IPC-A-600 (Acceptability of Printed Boards)
2:
Stiffener area material is FR-4 natural material with finished
thickness 0.5 mm +/- 0.13 mm
3:
Flex area material is polyimide with finished thickness
0.15 mm +/- 0.05 mm
4:
Both sides silkscreened in Haven 421 WF-1 or equivalent
5:
RoHS and UL 94V0 compliant
6:
Vias plated shut
7:
Connectors are Molex Part Number 51338-0374 and 55909-0374
8:
Cable length should not exceed 152.4 mm [6.0”]
One Flex Cable is available with the following SKU:
4.11 – Flex Cable Diagram (Imager Board to Decoder Board on All Models)
SKU
Type
D5
Standard Flex
Notes:
1. Tic is dependent on image size.
2. Trigger must be asserted for Trigger Confirmation Time.
3. Trigger Confirmation Time defaults to zero and is adjustable.
Parameter
Symbol
Min
Typ
Max
Unit
Note
Time from Trigger Accepted to
Image Capture Complete
T
ic
5
32
100
msec
1
Minimum Trigger duration
T
Tmin
10
20
N/A
2
Trigger Confirmation Time
T
TcT
0
0
see note
msec
3
UNITS = MM [INCHES]
PIN 1
(TO DECODE
BOARD)
PIN 1
(TO SCAN ENGNE)
MOLEX 51338-0374
MOLEX 55909-0374
10.00
[.394]
22.39
[.881]
Standard Flex
