Codan Radio MT-3 - Manual (Page 41)

MT-3 ANALOG RADIO SYSTEMS | USER GUIDE
Chapter 5: Radio System Components Page 33
Auxiliary Connectors
The motherboard on the subrack has two auxiliary connectors available, a DB25 connector for direct
connection to a Telex DSP-223 or IP-223 and a 96 pin connector typically used to connect to the
A-PNL-AUX96-3.
DB25 Connector to DSP-223 or IP-223
Connector J10 is a female DB25 connector which can be used for basic base connections. When
connected to a Telex DSP-223 or IP-223, a standard straight-through male-to-male DB25 extender
cable can be used with some motherboard jumper changes. The IP-223 also requires that 2 pins on the
DB25 (PTT COM - pin2 and MON COM - pin 16) are wired to ground for proper operation.
WARNING: JU108 must be confi gured correctly for DSP-223 or IP-223 or damage can occur.
JU108 A for +13.8 Vdc / DSP-223 or JU108 B for Rx A COR / IP-223
A-PNL-AUX96-3 Auxiliary Connector
An optional component that can be added to the subrack is the A-PNL-AUX96-3 Auxiliary Connector.
The auxiliary connector mounts on the back wrap-around cover of the subrack and connects to the
auxiliary connector on the motherboard. The A-PNL-AUX96-3 brings all of the auxiliary connector
signal lines out to screw terminals for easy connection. These connections are ideal for interfacing
external equipment and allowing easy access for testing and tuning points. The A-PNL-AUX96-3
Auxiliary Connector and the back wrap-around cover are shown in Figure 5-4.
Figure 5-4: Auxiliary Panel Diagram
J1
Tx A CSel D2 J2 Tx A CSel D0 Tx A CSel D1 Tx A CSel D3 Rx A CSel D0 Rx A CSel D1 Rx A CSel D2 Rx A CSel D3 Tx B CSel D0 Tx B CSel D1 Tx B CSel D2 Tx B CSel D3 Rx B CSel D0 Rx B CSel D1 Rx B CSel D2 Rx B CSel D3
J3 GPIO 1 GPIO 2 GPIO 3 GPIO 4 GPIO 5 GPIO 6 GPIO 7 GPIO 8 GPIO 9 GPIO 10 GPIO 1 1 GPIO 12 GPIO 13 GPIO 14 GPIO 15 GPIO 16
Ground Ground Ground Ground 13.8 Vdc 13.8 Vdc 9.5 Vdc 9.5 Vdc Rx A Sql Over Rx A Mode Rx A Disc LP
O/P
Rx A Sql De-emp Rx B Sql Over Rx B Mode Rx B Disc LP
O/P
Rx B Sql De-emp J4
GPIO 17 Tx A VSWR Fwd
Tx A VSWR Rev Tx A Dir Mod Tx A Sec/Clr Tx A PTT Out Rx A Sig Stren Rx A Mute GPIO 18 Tx B VSWR Fwd Tx B Dir Mod Tx B Sec/Clr Tx B PTT Out Rx B Sig Stren J5 Tx B VSWR Rev Rx B Mute
Tx A Bank Sel Rx A Sec/Clr O/P GPIO 19 Rx A 9.5V Rx A 9.5V Mon Rx A COR Rly N/C Rx A Bank Sel Tx B Bank Sel Rx B Sec/Clr O/P GPIO 20 Rx B 9.5V Rx B 9.5V Mon GPIO 21 Rx B Bank Sel GPIO 22 GPIO 23 J6
Pin 1 Pin 16 Wire Sizes: 22 AWG Min, 16 AWG Max
GPIO 1 GPIO 2 GPIO 3 GPIO 4 GPIO 5 GPIO 6 GPIO 7 GPIO 8 GPIO 9 GPIO 10 GPIO 11
GPIO 12 GPIO 13 GPIO 14 GPIO 15 GPIO 16 GPIO 17
Tx A Bal I/P 1
Tx A PTT Rx A Bal O/P 1
Rx A Bal O/P 2
Rx A COR Rx A Disc O/P Tx B Bal I/P
1
Tx B Bal I/P
2
Tx B PTT Tx B Subt I/P
1
Rx B Bal O/P
1
Rx B Bal O/P
2
Rx B COR Rx B Disc O/P Tx A Subt I/P 1
Tx A Bal I/P 2
GPIO 18 GPIO 19
GPIO 23 GPIO 22 GPIO 21 GPIO 20
CONNECTOR
BOARD
SUBRACK REAR VIEW
PLUG IN SCREW
CONNECTORS
A-PNL-AUX96-3
HEADERS AND LABEL
TERMINAL
BLOCK BOARD