User Manual

www.id-innovations.com
4
ID-2/12/20 LA Series Datasheet X1
11.04.2013
3. Device Operational Characteristics
Parameter
ID-2LA, ID-12LA, ID-20LA
Frequency
125 kHz nominal
Card Format
EM 4001 or compatible
Read Range ID3
Up to 30 using suitable antenna using ID-Innovations clamshell card @5v
Read Range ID13
Up to 12cm using ISO card, up to 18cm using ID-Innovations clamshell card @5v
Read Range ID23
Up to 18cm using ISO card, up to 25cm using ID-Innovations clamshell card @5v
Encoding
Manchester 64-bit, modulus 64
Power Requirement
+2.8 VDC thru +5 VDC @ 35mA ID-12LA, 45mA ID-20LA
RF I/O Output Current
+/- 200mA PKPK
4. Data Formats
Output Data Structure - ASCII - 9600 Baud, No Parity, 1 stop bit.
Output = CMOS (Push Pull) 0-Vdd
STX (02h)
DATA (10 ASCII)
CHECK SUM (2 ASCII)
CR
LF
ETX (03h)
Example for Calculation of Checksum for ASCII
Suppose the output Data is 0C000621A58E
Here the actual data is 0C,00,00,06,21,A5 and the checksum is 6E
Using binary we Exclusive OR the bit columns
0C = 00001100
00 = 00000000
06 = 00000110
21 = 00100001
A5 = 10100101
CHECKSUM 10001110 (8E)
Output Data Structure - Wiegand26 – 1mS repeat, 50uS pulse. Open Drain
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
P
E
E
E
E
E
E
E
E
E
E
E
E
O
O
O
O
O
O
O
O
O
O
O
O
P
Even parity (E)
Odd parity (O)
P = Parity start bit and stop bit
Output Data Magnetic ABA Track2 – At Approx. 80cm/sec. Open Drain
10 Leading Zeros
SS
Data
ES
LCR
10 Ending Zeros
[SS is the Start Character of 11010, ES is the end character of 11111, and LRC is the Longitudinal Redundancy Check.]