American Dynamics AD1202 Operations Instructions download pdf (Page 11)

1691 CONNECTIONS

Code Output Connections - All Models

The 1691 Code Distribution Unit provides 64 code line outputs

from a single code line input.

Each of the 64 code line outputs is through individual external

connectors each with three output terminals for camera control

commands (camera pan/tilt/lens/preset/aux) to AD Manchester

Control Code units, such as camera site receivers.

Each of the three output terminals are designated B for black,

W for white, and S for shield.

B Connect a black code wire from the B terminal on the

1691 to the B terminal of a suitable Manchester Code

receiver (see Figure 3, Page 3, or Figure 4, Page 4).

W Connect the white code wire from the W terminal on

the 1691 to the W terminal of a suitable Manchester

Code receiver.

S Connect one end of the shield cable between the 1691

and the receiver to the S terminal. Connect the

opposite end of the shield cable to the S terminal of

the receiver.

NOTE: AD Receivers feature built-in termination on their

logic boards. Verify the termination requirements of

non AD units before completing the connections.

NOTE: Use 18 Awg, shielded, 2-wire cable, Belden 8760 or

equivalent for code line connections. The maximum

cable length is 5000 feet. For plenum wiring, use

Belden 88760.

NOTE: Tables One and Two (pages 6 and 7, respectively),

provide space to record basic connection information

between the 1691 Code Distribution Unit and up to 64

code receivers.

Daisy Chain Connection

Each code line can accommodate a maximum of three code-

controlled units in a “Daisy Chain” configuration of less than

500 feet.

NOTE: Terminate only the last unit on the code line in 120

ohms.

If additional equipment is required on a code line, or of longer

distances are involved, Code Distribution Units must be used.

Each code line can accommodate a maximum of three code

receivers in a “daisy chain” configuration of less than 5000

feet, as illustrated in Figure 5, below). The last unit in the

daisy chain must be terminated with a 120Ω 1/4 Watt resistor.

Figure 5 -- 1691 Daisy Chain Configuration

1691 Code Distributor

Code Receiver #1

Code Receiver #2

Code Receiver #3*

* = 120Ω Termination

SWB

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American Dynamics AD1202 Operations Instructions Page 11

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