Linear Satellite Radio manual Description, Code Switch Location

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 recoded 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
	8	Digital Coding
7
6		Switch
5

4 3

			2
O	1
	N
		O
			F
				F

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

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 3. Receiver #1 Coding Figure 6. Receiver #4 Coding