5 - 6
E F - 1 M I N T E R F A C E
BLOCK DIAGRAM
Figure 10: EF-1M Block Diagram
EF-1M
4-Wire
Input
Hybrid Null
4-Wire
Output
Gain
Adj.
Gain
Adj.
Microprocessor
C-C Call
Send &
Receive
Intercom
Line
TW Power
Splitter
Power
20 kHz
Call
200 Hz
Null
20 kHz Call
Receive
RS-422
Send
RS-422
Receive
Nulling
Earphone
Power
Data
Phone
Det.
Baud Rate
Select
Send
Receive
C-C / TW
Mode
C-C / TW
Mode
Normal /
Matrix Direct
Mode
Содержание PL-PRO EF-1M
Страница 1: ...I N S T R U C T I O N M A N U A L EF 1M INTERFACE...
Страница 6: ...i v E F 1 M I N T E R F A C E...
Страница 41: ...E F 1 M I N T E R F A C E 5 7 COMPONENT LAYOUT Figure 11 EF 1M PCB Component Layout Drawing...
Страница 54: ...NOTES...
Страница 55: ...NOTES...