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SETTING THE SWITCHES
Before making changes to any of the DIP switches (Figure 1),
power MUST be disconnected from the receiver (unplug the
terminal block from J2 on the circuit board). Otherwise, your
changes will not take effect. Also, when setting the receiver's DIP
switches, refer only to the numbers silk screened on the circuit
board (not the numbers on the DIP switch itself).
1. Disconnect power to the receiver.
2. Turn screws counterclockwise 1/4 turn and remove front
cover.
3. Before or while touching the circuit board, discharge any
static electricity:
(1) Use a grounding strap OR
(2) Touch a cold, grounded, metallic pipe.
4. The output code format switch settings are factory-set for the
30-bit format (Figure 2). To change the settings to 26-bit,
refer to Figure 3.
30-bit Switch Settings (Default):
S1, 3 = OFF or 0
S1, 2 = OFF or 0
S1, 1 = ON or 1
S1, 0 = ON or 1
26-bit Switch Settings:
S1, 3 = OFF or 0
S1, 2 = OFF or 0
S1, 1 = ON or 1
S1, 0 = OFF or 0
5. Set the transmitter button response(s).
• There are three DIP switches used to set the transmitter
button response(s) (Figures 4 or 5).
• To disallow receiver response to transmitter buttons, move
the DIP switch(es) to the LEFT. All button switches are
factory set to ON.
Switch S1, 1 controls Button #1 and Button #4*
Switch S1, 2 controls Button #2
Switch S1, 3 controls Button #3
* If using a CPT4 transmitter, Button #4 reacts to Button #1
settings, but uses a unique identification number and facility
code.
S1
1
Buttons 1-3 are
3
2
factory-set to ON.
3-Button Remote
Transmitter
1535F11
Figure 5: 3-Button Transmitter Button Switches
Left = OFF or 0
Right = ON or 1
FORMAT
3
2
1
BUTTON
0
3
2
1
FFC
1
U2
1
1
15
14
13
12
11
10
9
8
Figure 1
1535F7
Figure 2: 30-bit DIP Switch Setting
1535F10
Figure 3: 26-bit DIP Switch Setting
CPT4
Transmitter
1535F8
Figure 4: CPT4 Transmitter Button Switches
2
C13
R1
U1
Y2
L1
L3
C9
J1
C17
L2
C23
C14
C20
C9
C18
C10
Y4
C11
E1
Y1
Y3
D11
C15
SIGNAL
C2
C12
D12
C16 R5 C19 R4 U6
DATA
C29
C27
D13
R2
C25
VALID
R3
14
L4
C2
D9
R7
POWER
U7
CLOCK
IN
R25
GRANTED
D1
U5
1
TP1
C28
TP4
R8
C30
C3
DATA
R12
C31
C5
IN
F A C I L I T Y
CO D E
J3
14
FORMAT
+5V
GND
U3
15
3
Q2
TP2
14
2
R20
C32
13
1
R19
TP3
12
0
Q1
U12
11
3
BUTTON
10
2
D7
D6
D5
D4
9
1
D2
FFC
C4
U9
C7
C8
U8
C6
U10
D8
14
RP2
1
RP3
1
R13
1
RP1
D3
U4
D3
R17 R16
R15
R14
D16
SENTEX SYSTEMS
MADE
I N USA
FACILITY CODE
FORMAT
7
3
6
2
5
1
0
4
3
3
2
2
1
1
0
S1
FORMAT
3
2
1
0
3
BUTTON
2
1
FFC
S1
FORMAT
3
2
1
0
3
BUTTON
2
1
FFC
S1
FORMAT
3
2
1
0
3
2
1
Buttons 1-3 are
factory-set to ON.
BUTTON
FFC
BUTTON
FFC
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