Access keyboards ATB 420/421 Multi-Function Keyboard Product Specification and Service Guide
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Rev 6
Access Keyboards 2001 & 2002 - All rights reserved Page 8 of 37
2.2
RS232 Host Interface
The ATB420/421 uses RS232 hardware handshake and flow control lines.
In order to transmit, via the Host Port the ATB420/421 sets RTS and DSR high and also must
detect CTS and DSR high. If these conditions are not met no data will be sent to the host and the
Bi-colour LED will be Orange.
Data Output
:
Standard ASCII RS232
Standard com settings
Option A: 9600 Baud, 8 Bit, No Parity, One Stop
Option S: 9600 Baud, 7 Bit, Even Parity, One Stop (default)
Other settings can be employed for customer specific COM
requirements
2.3
Keyboard PS/2 data Interface
The ATB 420/421 can be configured to output data as a keyboard wedge interface. Access can
pre-configure the unit with firmware, which will allow any of the devices i.e. OCR, MSR or BCR
functions to output the data as keyboard strokes.
Special data parsing firmware can be pre-loaded to suit customer requirements where data needs
to be presented as specific customised fields.
Data Output:
Standard 104/105 key AT scan codes Sets 1, 2 and 3
2.4
Integrated Magnetic Swipe Reader (MSR)
Data Source
:
ATB1 and ATB2 documents, bank and credit
cards, frequent flyer cards, employee travel
and identity cards
Data Standards
:
IATA 1722c, 722e, ISO 7811/2-5
Data Output
:
Standard ASCII
Magnetic tracks
:
4 magnetic tracks
Swipe Velocity
:
10 - 60 cm/sec
Read response time
:
0.3 seconds
Read direction
:
bi-directional
Construction
:
Integrated into keyboard housing
MTBF
:
100,000 operating hours
Read head life
:
500,000 passes
Diagnostics
:
Internal self test upon power up
Red and Green LED for data read and audible
sounder.
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