14
03 TRANSMISSION CIRCUIT
Linear Amplifier Control
Linear amplifier control can be used for switching between transmission and reception of devices such as the linear
amplifier and transverter.
REMOTE Connector
The REMOTE connector is a 7-pin DIN type connector, the same as our conventional transceivers.
The
LKY
(Linear amplifier Keying) terminal (pin 7) is equipped with a logic to output 12 V on transmission and a logic for
short-circuiting to ground on transmission according to the linear amplifier menu setting which will be described later.
The “REMOTE Connector Pin Assignment” illustration shows the signaling paths allocated to the REMOTE connector
pins.
2
4
1
6
7
3
5
ALC
GND
(RX)
(TX)
COM BRK
LKY
MKE
10
Ω
10
Ω
ON during Active High/transmission: 12 V
ON during Active Low/transmission: “L”
REMOTE
Connector
(View from Rear Panel)
GND:
Connect to metal shield.
Fig. 16
REMOTE Connector Pin Assignment
Table 4 Terminal Descriptions for the REMOTE Connector
Terminal
No.
Terminal
Name
Function
Input/
Output
1
SPO
Speaker out
O
2
COM
Common terminal of the built-in relay for linear amplifier control
I/O
3
SS
PTT input
• Sends signal by grounding the SS terminal.
I
4
MKE
Make terminal of the built-in relay for linear amplifier control
• The make terminal can be connected to the common terminal during transmission
by configuring “ Internal Relay Control ” of the linear amplifier menu.
Rated control capacity of relay contact: 2 A/ 30 V DC (resistance load)
Maximum allowable voltage of relay contact: 220 V DC, 250 V AC
I/O
5
BRK
Break terminal of the built-in relay for linear amplifier control
• The break terminal can be connected with the common terminal when the latter is
not connected to a make terminal.
Rated control capacity of relay contact: 2 A/ 30 V DC (resistance load)
Maximum allowable voltage of relay contact: 220 V DC, 250 V AC
I/O
6
ALC
ALC input from the linear amplifier
• This is a negative input. The ALC circuit starts to operate from an input of
approximately -4 V (which can be changed from the Linear Amplifier menu).
I
Содержание TS-890S
Страница 1: ......
Страница 96: ...TS 890S In depth Manual May 17 2019 CA 337W E96 Copyright 2019 All Rights Reserved ...