Linear Satellite Radio User Manual

DESCRIPTION
The D-4B is a handheld four-channel transmitter,
designed to perform four separate functions. this
attractive, lightweight transmitter, operating in
conjunction with four single-channel receivers, or
one multi-channel receiver, can perform a wide
variety of remote switching tasks.
CODE SWITCH LOCATION
The digital coding switch is attached to the circuit
board inside the transmitter. It is located beneath
the small access door on the back of the case
(see Figure 1). To reach the coding switch and
the 9-volt battery, gently pry open the access
door and lift it off.
CAUTION:
Transmitters and receivers should be
r ecoded by the installer prior to
installation.
Figure 1. Removing the Battery/Coding Access
Door
In order to avoid the possibility of duplicating
codes in adjacent systems, factory set codes
should not be used. In addition, among the valid
codes available, four other should not be used
because they, also, are too often duplicated.
These include: (1) all keys set to ON; (2) all keys
set to OFF; (3) keys set in alternating ON/OFF
positions; and (4) keys set in alternating OFF/ON
positions.
CODE SETTING FOR FOUR
SINGLE-CHANNEL RECEIVERS
Following is the procedure for coding four
single-channel receivers to a D-4B transmitter.
Use a paper clip or other pointed object (except
a pencil or pen) to set the keys on the digital
coding switches to the code you select -
remember the previous caution about coding. Do
not use a pen or pencil; the ink or graphite may
contaminate the switch keys. Note that the D-4B
and each receiver has an eight-position
dipswitch (see Figure 2). The ON/OFF code
selected on keys 3-8 in the transmitter must
match exactly with the ON/OFF code selected
on keys 3-8 in each receiver. Set keys to ON
or OFF positions from left to right (from numbers
3-8). In the example shown in Figure 2, keys 4,
6 and 7 are set to ON; keys 1, 2, 3, 5, and 8 are
set to OFF. Keys 1 and 2 in the transmitter are
not connected, they can be set in any
position.
Set each receiver's switch keys 1 and 2 as
follows:
Receiver #1: Switch 1 OFF, switch 2 OFF (see
Figure 3)
Receiver #2: Switch 1 ON, switch 2 OFF (see
Figure 4)
Receiver #3: Switch 1 OFF, switch 2 ON (see
Figure 5)
Receiver #4: Switch 1 ON, switch 2 ON (see
Figure 6)
Figure 2. Example
Digital Coding
Switch
Each button on the D-4B will now activate a
separate receiver.
NOTE:
Mount receivers at least 10 feet apart
from each other.
CODE SETTING FOR
FOUR-CHANNEL RECEIVERS
To code a D-4B transmitter with a four-channel
receiver, procede as follows:
Set keys 3 through 8 in the transmitter to
correspond exactly to keys 3 through 8 in the
receiver. Matching these keys completes the
coding procedure required to activate the four
channels. Their functions are programmed to
access channels 1 through four corresponding
with buttons 1 through 4 on the D-4B transmitter.
1 2 3 4 5 6 7 8
O
N
O
F
F
Figure 3. Receiver #1 Coding
CODE SETTING FOR
EIGHT-CHANNEL RECEIVERS
To code a D-4B transmitter with an eight-channel
receiver, procede as follows:
Set keys 4 through 8 in the transmitter to
correspond exactly to keys 4 through 8 in the
receiver.
For the transmitter to activate channels 1 through
4 of the eight-channel receiver, set key 3 in the
transmitter to OFF.
For the transmitter to activate channels 5 through
8 of the eight-channel receiver, set key 3 in the
transmitter to ON.
1 2 3 4 5 6 7 8
O
N
O
F
F
Figure 4. Receiver #2 Coding
1 2 3 4 5 6 7 8
O
N
O
F
F
Figure 5. Receiver #3 Coding
1 2 3 4 5 6 7 8
O
N
O
F
F
Figure 6. Receiver #4 Coding