05-4819A01, Rev. 08
LCT 450 Installation/Operation Guide
25
Note 1:
Channel select decoding as follows: High = no connection; Low = Gnd. See
table below for radio channel selections.
Note 2:
Provide low impedance path to ground to key transmitter.
11
Audio Isolated Ground
12
No connection (NC)
13
No connection (NC)
14
Channel Select 2
(See Note 1)
15
No connection (NC)
16
RS-485/422 Isolated Ground
17
TX Audio input to radio
18
Channel Select Isolated Ground
19
Channel Select 0
(Note 1)
20
No connection (NC)
21
PTT Isolated Ground
22
No connection (NC)
23
Channel Select 1
(Note 1)
24
TXD+ (RS-485/422 digital).
Input to radio.
25
TXD-
(RS-485/422 digital)
Input to radio.
Table 5. Channel Selection Table
Channel 3
Channel 2
Channel 1
Channel 0
Selected
High (future use)
High
High
High
1
High (future use)
High
High
Low
2
High (future use)
High
Low
High
3
High (future use)
High
Low
Low
4
High (future use)
Low
High
High
5
High (future use)
Low
High
Low
6
High (future use)
Low
Low
High
7
High (future use)
Low
Low
Low
8
Table 4. P1 Control Interface Pin Descriptions
Содержание MDS LCT 450
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