1
Copyright by SKIDATA AG 2004
KeyDetector DUO
KD DUO
KeyDetector DUO is the standard interface module
for SKIDATA’s keymotion technology. As such it
constitutes a connecting link interfacing keycard and
Swatch Access data carriers with higher systems
and applications.
Proximity 122 kHz and 13 MHz transmission
technology.
Reads keymotion Data Carriers; allows coding
them using automatic memory management.
Contains a security-IC for encrypting data for
keymotion data carriers.
Control and communication via serial inter-
face RS232 (RS485 optional) with defined
protocol.
Signalling by red/green/orange LED and
beeper.
Mounting Information
The data transmission between the KeyDetector and
data carriers is sensitive against electrical and electro-
magnetical fields. Those fields are produced by
electrical devices of any kind such as monitors, TV-
sets, ... Thus the KeyDetector must not be placed near
electrical devices. Also metal surfaces placed near the
KeyDetector have a strong impact on the data
transmissions. For sure and reliable operation it is
neccessary that there are no metal objects within 10
cm around the KeyDetector in any direction. If metal
objects are placed between the KeyDetector and a
data carrier data transmission will be impossible at all
in most cases.
Electrical Characteristics
RS232-Versions
RS485-Versions
Supply Voltage (V
in
)
7 V to 12 V
7 V to 12 V
Supply Current (I
in
)
TAG write-mode
max. 500 mA
excl. external antenna
Supply Current (I
in
)
Idle mode
typ. 60 mA max. 100 mA
(no LEDs switched on)
Reading distance
Typical
Swatch Access
40 mm
Swatch Beat
40 mm
KeyCard 100
mm
GemFree 80
mm
Weights
Weight
KeyDetector in housing
150 g (excl. power supply
and cable)
module version
50 g
Absolute Maximum Ratings
RS232-Versions RS485-Versions
Supply Voltage (V
in
)
+15.00 V
+15.00 V
Input Voltage (RxD)
±
30.00 V
Input Voltage (A,B)
+5.00 V
Input Voltage IO1 – IO3
+32.00 V
+32.00 V
Output Current IO1/IO2
1.0 A
Storage Temperature
-30 °C to +70 °C
Operating Temperature
-20 °C to +60 °C
