Testing the RM-DCM-2
35
FIGURE 20. Self-Test LCD Display
5. To test the supervised inputs, attach a 1K
resistor to each input (Input 1
and Input 2) as shown in Figure 21.
Prior to installing the resistors, the input state should be open (0). After
installing the resistors, the input state should be secure (I1=1 and I2=1).
FIGURE 21. Attaching Resistors to the Supervised Inputs
6. To test each reader line, short to ground, one at a time, each of the three
reader data lines (D0, D1, and DAT) on the Reader port.
After shorting a data line, the display should show a “1” in the appropriate
reader line position to indicate that the data line is low (for example, W=010
when you short the D1 line).
After removing the short from the data line, the display should revert to 0
for that reader line.
Indicates the state of supervised
inputs Input 1 and Input 2:
0 = Open
1 = Secure
2 = Alarm
3 = Short
T = Trouble (Line Fault)
Indicates the state of the
reader port connections (D1
line, D0 line, and DAT line, in
that order):
0 = Closed
1 = Open
Indicates the current
position of switches 1, 2,
and 3 on DIP switch S5:
0 = On (Closed)
1 = Off (Open)
Indicates the state of the
Tamper enable switch:
0 = Closed
1 = Open
Indicates the state of
the keypad input
lines, where the
number after “K” is
the keypad input.
The last change is
displayed.
0 = Closed
1 = Open
