Tamper Protection - Bosch APC-AMC2-4W Installation Manual

46 en | Installing
To detect the four states there are only special values allowed
for potential drop depending on the used resistors. The follow-
ing table shows the values for the possible resistor combina-
tions.
R 1k 1k2
P
R
S
1k 0,21 0,23 0,26 0,32
1k2 0,20 0,23 0,26 0,32 0,35
1k5 0,20 0,23 0,25 0,32 0,35 0,39 0,41
1k8 0,19 0,21 0,24 0,31 0,34 0,38 0,41 0,44 0,47 0,50
2k2 0,20 0,23 0,30 0,33 0,37 0,40 0,43 0,47 0,50 0,53
2k7 0,18 0,21 0,27 0,31 0,35 0,38 0,41 0,45 0,49 0,51
3k3
3k9
4k7
5k6
6k8
8k2
Table 5.3 Maximum values of potential drop for the combination of resistors
NOTE!
i
It is recommended to choose the serial resistor (R
than 5K6 to get clearly values.
5.13

Tamper Protection

To protect the AMC2 4W against unauthorized access and pre-
vent the AMC2 4W from tampering with sensitive data, the
AMC2 4W offers an additional interface to connect external
tamper contacts. This interface is a potential-free 2-pin plugga-
ble screw connector marked with T. If not using the tamper
contact, short-circuit the contacts with a wire connection.
F.01U.024.965 | V.4 | 2006.09
1k5 2k2 2k7
0,19 0,24 0,28 0,32 0,35 0,39 0,42 0,46 0,50
0,23 0,26 0,29 0,32 0,36 0,40 0,43 0,47
0,20 0,23 0,26 0,29 0,32 0,35 0,39 0,42
0,20 0,23 0,25 0,29 0,32 0,35 0,39
Installation manual
3k3 3k9 4k7
0,19 0,22 0,24 0,27 0,31 0,33
0,18 0,21 0,23 0,26 0,29
AMC2 4W
5k6 6k8 8k2
) not higher
S
Bosch Security Systems