Getting Started
1 - 3
Block Diagram
The MiniScan block diagram illustrates the functional relationship of the MiniScan components. Following is a
detailed description of each component in the block diagram.
Figure 1-2
MiniScan Block Diagram
Miniscan Block Diagram Descriptions
Decoded Scan Engine
- The scan engine emits a beam of laser light that reflects off the bar code. Black bars
absorb light, white spaces reflect light. The scan engine collects the reflected light and processes the signal
through several analog filters. The filtered signal is digitized into a Digitized Barcode Pattern (DBP). The decoder
micro-controller analyzes timing information to decode and transmit the data contained in the bar code.
Interface Board
- The interface board adapts the scan engine's interface into usable signals and data for the
intended host. It also contains a beeper and red/green LED for audio/visual feedback, and provides for an external
trigger and external beeper.
The interface board converts the scan engine's data to Synapse, USB, or TTL level RS-232. A separate host
adapter cable (p/n 25-62186-xx) converts the TTL level RS-232 output to standard RS-232 levels. All interface
types are auto-detected based on the host cable attached.
DB9
- The DB9 connector provides a sealed outlet for the various interface signals used between a MiniScan
scanner and the host. It also maintains pin compatibility with the previous generation LS1220 MiniScan host
cables.
DB9
flex
flex
Decoded
Scan
Engine
Interface Board
Red/
Green
LED
Interface Circuit
TTL-RS232, Synapse, USB
Interface
External Beeper
Beeper
External Trigger
Содержание Symbol MiniScan MS1207FZY
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