Product manual

Electrical Connections

Table 1: DIP Switch Positions for Address Settings

Dip Switch Positions Binary

Address

1 2 3 4

1 ON OFF OFF OFF

2 OFF ON OFF OFF

3 ON ON OFF OFF

4 OFF OFF ON OFF

5 ON OFF ON OFF

6 OFF ON ON OFF

7 ON ON ON OFF

8 OFF OFF OFF ON

9 ON OFF OFF ON

10 OFF ON OFF ON

11 ON ON OFF ON

12 OFF OFF ON ON

13 ON OFF ON ON

14 OFF ON ON ON

15 ON ON ON ON

Electrical Connections

All external electrical connections to the Model 26 are made on its rear panel. See Figure

6. For information on connecting the Model 26 communications interface to a variety of

conventional radios, see

Appendix C: Communication Interface Examples on page 105.

Consult the factory for special interface application notes.

Keyboard Expansion LOOP IN/OUT Connectors

Caution!

The Keyboard Expansion LOOP OUT and LOOP IN jacks on the rear of

a Model 26 must be connected, even if no expansion panels are

installed. Failure to install a jumper on the Model 26 will prevent it

from being able to read its own keyboard. — The Model 26 ships with

a half-twist jumper cable (709-7160) installed between the LOOP OUT

and LOOP IN connectors. If an expansion panel is installed, two 709-

7098 cables are supplied with it to replace the 709-7160 cable.