Linear D-2C Code Setting And Installation Instructions

LINEAR'S MULTI-CHANNEL RECEIVERS
Linear manufactures several multi-channel receivers for
use in security systems and remote switching functions
requiring more than one wireless zone or output. Using one
multi-channel receiver instead of several single-channel
receivers enables the installer to cut installation costs and
improve system performance by eliminating RF
interference problems present in multiple-receiver
installations.
THREE DIFFERENT TYPES OF OUTPUTS
Linear's two- and four-channel receivers are available in
three different types of output configurations: two
solid-state and one relay. Certain alarm control panels and
communicators require a positive voltage to trigger. Other
controls, especially those with end-of-line (EOL) resistors,
can be triggered with a short-to-common output. All
controls and communicators can be triggered with a dry
contact relay output (normally open or normally closed).
"C" TYPE VOLTAGE OUTPUT
D-4C and D-4C/K
The output wires on the "C" type voltage output receivers
supply a positive trigger voltage to the connected device
when the receiver detects a properly coded digital RF
signal from a Linear transmitter. Each output channel wire
will switch from an open state to +9 volts DC when
activated. The voltage outputs are current limited to 10 mA
maximum at 9 VDC, 40 mA maximum into a short. See
Figure 1 for a hook-up example.
"D" TYPE SHORT-TO-COMMON OUTPUT
D-4D and D-4D/K
The outputs of a "D" type short-to-common receiver are
similar to a normally open switch that has one side
connected to common or circuit ground. When any receiver
channel is activated, the corresponding output wire will
switch from an open state to 0 volts (common or circuit
ground). The short-to-common outputs are current limited
to a maximum of 40 mA. This is enough current to trigger
most control panels with EOL resistors or drive a small
relay. If driving a relay, be sure to connect a clamping diode
across the relay coil. See Figure 2 for a hook-up example.
NOTE: On all "C" and "D" type receivers, the common (-)
of the receiver must be connected to the common (-) of the
control panel or communicator (see Figures 1 & 2).
"R" TYPE RELAY OUTPUT
D-2R, D-2R/K, D-4R AND D-4R/K
The outputs of the "R" type receivers are isolated dry relay
contacts. Dry contacts indicate that the switching contacts
are isolated from the receiver power supply. The receivers
provide normally open and normally closed contacts for
each channel. The current rating of the relay outputs is 1
amp at 32 volts maximum. Do not exceed this rating. See
Figure 3. for a hook-up example.
RECEIVER CODE SETTING
CAUTION: Transmitters and receivers should be re-coded
by the installer prior to installation. Do not leave units set
to the factory code.
Linear's two- and four-channel receivers contain an
eight-key digital coding switch recessed in the back cover
of each unit.
The switch keys are numbered 1-8 (see Figure 4). Keys
ANTENNA
#1 and #2 are not used when coding the receiver. These
RED
keys are not connected, and their position doesn't matter.
+ 12 VDC AUX OUTPUT
"C" TYPE
COMMON NEGATIVE
To set a code, select a random pattern for keys 3-8. Set
RECEIVER BLACK
TYPICAL CONTROL PANEL
the code keys with a pointed object other than a pencil or
CH 2 CH 1
ZONE 1 INPUT pen. In the example shown in Figure 4, keys 4, 6 and 7 are
+9 WHEN TRIGGERED
COMMON LOOP RETURN
set to ON , keys 1, 2, 3, 5 and 8 are set to OFF .
ZONE 2 INPUT
The receiver code keys 3-8 must match exactly with code
VOLTAGE OUTPUT HOOK-UP ZONES PROGRAMMED
FOR VOLTAGE TRIGGER
keys 3-8 in all Linear transmitters used with that receiver.
Figure 1. Typical "C" Type Wiring
ANTENNA
RED
+ 12 VDC AUX OUTPUT
"D" TYPE
COMMON NEGATIVE
RECEIVER BLACK
TYPICAL CONTROL PANEL
CH 2 CH 1
ZONE 1 INPUT
COMMON WHEN
COMMON LOOP RETURN
TRIGGERED
ZONE 2 INPUT
SHORT-TO-COMMON HOOK-UP ZONES PROGRAMMED
FOR E.O.L. RESISTORS
Figure 2. Typical "D" Type Wiring
TRANSMITTER CODE SETTING
TWO- AND FOUR-CHANNEL TRANSMITTERS
ANTENNA
To code a D-4 four-channel portable transmitter to any two-
RED or four-channel receiver, simply match keys 3 through 8 in
+ 12 VDC AUX OUTPUT
"R" TYPE
COMMON NEGATIVE the transmitter to keys 3 through 8 in the receiver.
RECEIVER
BLACK
TYPICAL CONTROL PANEL To code D-22B, D-22C, or D-22D two-channel portable
CH 2 CH 1
N/O transmitters to a two-channel receiver, match keys 3
ZONE 1 INPUT
COM
COMMON LOOP RETURN
through 8 in the transmitter to keys 3 through 8 in the
COM
ZONE 2 INPUT
receiver and turn transmitter key #2 to the OFF position.
N/C
ZONES PROGRAMMED
FOR E.O.L. RESISTORS
RELAY OUTPUT HOOK-UP
IMPORTANT: When using the above two-channel
transmitters with any two-channel receiver, key #2 in the
Figure 3. Typical "R" Type Wiring
transmitter must be
To code D-22B, D-22C, or D-22D two-channel portable
transmitters to a four-channel receiver, match keys 3 through
8 in the transmitter to keys 3 through 8 in the receiver. If key
#2 in the transmitter is OFF, the transmitter will activate
receiver channels one and two. If key #2 in the transmitter is
ON, the transmitter will activate channels three and four.
SINGLE-CHANNEL TRANSMITTERS
To code any Linear single-channel transmitter to a two- or
four-channel receiver, set keys 3 through 8 in the transmitter
to match keys 3 through 8 in the receiver. Keys one and two
in the transmitter determine which receiver channel will
activate. Refer to Figures 5, 6, 7 and 8 for the settings of keys
one and two in the transmitter for selecting channels 1, 2, 3
and 4 respectively.
Figure 4.
NOTE: On multi-channel receivers, only one receiver
Example
channel can be activated at a time!
Coding Switch
1 2 3 4
O
N
O
F
F
1 2 3 4
O
N
O
F
F
1 2 3 4
O
N
O
F
F
1 2 3 4
O
N
O
F
OFF. F
Figure 5.
5 6 7 8
Transmitter Setting
for Channel One
Figure 6.
5 6 7 8
Transmitter Setting
for Channel Two
5 6 7 8 Figure 7.
Transmitter Setting
for Channel Three
Figure 8.
5 6 7 8
Transmitter Setting
for Channel Four