Cisco Systems OL-20932-02 Manual De Usuario

Door input devices can be supervised or unsupervised

Unsupervised input devices have two states: active or inactive.

Supervised input devices have four states: active, inactive, short, and open.

Unsupervised inputs have limited functionality. If a wire is cut or shorted between the input module and 
a normally open device. The server cannot determine the change and the device would remains in 
inactive state even when the switch is closed.

To make the input device supervised, use two 1K resistors in the circuit (

). 

In the inactive state, the circuit measures 2000 ohms.

In the active state, the circuit measures 1000 ohms.

In the short state the circuit measures 0 ohms

In the open state the circuit measures infinite ohms. 

Once the input device is supervised, CPAM can determine if a wire is cut or shorted. 

You must also configure the device as supervised in CPAM. See the 

 for more information.

Reader

6 per 
reader

22

Wiegand

A reader device includes the following:

2 Wiegand data wires

1 LED

1 beeper

2 power (12VDC) wires (500 feet maximum 
length)

Electric strike or 
magnetic lock

2

18

Output

Opens the locking device. Include a reverse bias 
diode or other surge suppressor to protect against 
reverse current. See the 

 for more information.

Alarm bypass

2

22

Output

Optionally used to turn off the alarm contact at the 
door while the strike is energized. 

Bell or call

2

22

Input

Optional call button that creates an event to notify a 
CPAM user that a person is trying to get in the door.