Digital Signal Processing Reference
In-Depth Information
Table 11.2
Typical technical data
Supply voltage:
Typically 12V
Antenna:
External
Antenna connection:
BNC box, terminal screw or soldered connection
Communication interface:
RS232, RS485
Communication protocol:
X-ON/X-OFF, 3964, ASCII
0-50
◦
C
Environmental temperature:
Table 11.3
Typical technical data
Supply voltage:
Typically 24V
Antenna:
External
Antenna terminal:
BNC socket or terminal screw
Communication interface:
RS485, RS422
Communication protocol:
3964, InterBus-S, Profibus, etc.
−
25-+80
◦
C
Ambient temperature:
Protection types, tests:
IP 54, IP 67, VDE
Table 11.4
Typical technical data
Supply voltage:
Typically 6 V or 9 V from batteries or accumulators
Antenna:
Internal, or as “sensor”
Antenna terminal:
—
Communication interface:
Optional RS232
0-50
◦
C
Ambient temperature:
Protection types, tests:
IP 54
Input/output elements
LCD display, keypad
Figure 11.24
Reader for portable use in payment transactions or for service purposes. (Photo of
LEGIC
reader reproduced by permission of Kaba Security Locking Systems AG, CH-Wetzikon)
11.5.2
Readers for industrial use
Industrial readers are available for use in assembly and manufacturing plant. These
usually have a standardised field bus interface for simple integration into existing sys-
tems. In addition, these readers fulfil various protection types and explosion protected
readers (EX) are also available.
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