User Manual

Exalt Communications, Inc.

Exalt i-Series Installation and Management Guide

5000001 111

2007-06-25

Sync Connections

There are two sync connectors: Sync In and Sync Out. The Sync In connector is normally

connected to a (custom) GPS antenna system, or to the Sync Out connector of a

collocated radio.

Figure 45 Sync In connector

Figure 46 Sync Out connector

For internal sync, pins 2 and 6 are the only required connections. Connect these pins

using a straight cable. A straight cable can be used for all pin connections.

For GPS connections, the interconnection cable between radios must cross over pins 3

and 5, with all other pins wired straight through.

All configurations do not require connections on pins 4, 7, and 8.

Pin Function

1 +5V Power Out (to GPS antenna)

2 Ground

3 Tx Data (to GPS antenna)

4 Enable (to GPS antenna)

5 Rx Data (from GPS antenna)

6 1 pps Timing Signal (from GPS antenna)

7 Unused

8 Unused

Pin Function

1 +5V Power In (from connected radio)

2 Ground

3 Tx Data (to connected radio)

4 Unused

5 Rx Data (from connected radio)

6 1 pps Timing Signal (to connected radio)

7 Unused

8 Unused