User Manual

Appendices
Version 4 A-54 4/2/04
LIST 1 – EXTEND-A-PAGE TRANSMITTER REAR PANEL CONNECTOR
DESCRIPTION
L.1 Extend-A-Page Transmitter Unit System Interface Connector
(DB9 to P5 Connector on Motherboard)
Db9 Pin # Description
1 – Analog Key (Active Low)
2 – Audio +
3 – Audio -
4 – Digital Key (Active Low)
5 – Digital Data (TTL or RS232)
6 – D-Reset (Active High)
7 – Hotkey (Active Low)
8 – +12VDC Output
9 – Ground
NOTES:
1. Both Digital and Analog Key inputs accepts TTL level ‘Low’ or Form C relay
closure to ground.
2. Digital Data accepts both TTL and RS232 data level.
3. EAP transmitter requires 250-millisecond gap from the application of Key
(Analog or Digital) to the transmission of data. This warm up period ensures
the transmitter is stable on frequency and on full power.
L.1.2 Antenna
- N Connector to 50 Ω load.
L.1.3 Manual Key Switch
- Keys transmitter on (Up) / Off (Down)