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DHY-03 User Handbook
DHY-03EC I/O Connector
Note: All pins used on existing DHY-02EC units have been kept at the same location on
the DHY-03EC, so this unit can be fitted directly to an existing installation provided that
no unused pins have been used for other purposes.
Row A
Pin 2
:
Telephone Line 1 (Tip)
Pin 4
:
Telephone Line 1 (Ring)
Pin 5
:
Earth Recall
Pin 6
:
Ringer
Pin 7
:
Handset Ring
Pin 8
:
Handset Earth Recall
Pin 9
:
Handset Ring
Pin 10
:
Handset Tip
Pins 11+12 :
Removed
Pin 16
:
Line Input (phase)
Pin 17
:
Line Input (non-phase)
Pin 18
:
On (screen)
Pin 19
:
Remote DTMF Output (voltage set by switch 5)
Pin 20
:
Line Output (phase)
Pin 21
:
Line Output (non-phase)
Pin 22
:
0V (screen)
Pin 24
:
+15V
Pin 25
:
+5V
Pin 26
:
-15V
Pin 27
:
0V
Pins 28+29 :
Earth
Pin 30
:
Remote Line Connect Switch (connect to or activate)
Pin 31
:
Remote Line Connect/Ring Indicator (voltage set by switch 4)
Pin 32
:
0V
Row B
Pin 18
:
0V
Pin 22
:
0V
Pin 24
:
+15V
Pin 25
:
+5V
Pin 26
:
-15V
Pin 27
:
0V
Pin 28
:
Serial Port TxD (data out) - Pin 2 on 9 Way D Type
Pin 29
:
Serial Port CTS (handshare in) - Pin 7 on 9 Way D Type
Pin 30
:
Serial Port RxD (data in) - Pin 3 on 9 Way D Type
Pin 31
:
Serial Port RTS (handshare out) - Pin 8 on 9 Way D Type
Pin 32
:
0V (serial ground) - Pin 5 on 9 Way D Type
TECHNICAL SPECIFICATION
B
A
32
1
TECHNIC
AL SPECIFIC
A
TION
4