Motorola MTM5400 Manuel d'installation télécharger pdf (Page 63)

INSTALLATION MTM5400 Mobile Terminal Installation Manual 63

25-Pin subD Connector

Data Expansion Head Enhanced:

Table 10 10-Pin TELCO Connector

Pin Function Description

1 Audio + Balanced Audio + (Bidirectional)

2 Not Connected

3 BUS+ This is used for communication between the radio and an Enhanced Control Head.

4 Audio- Balanced Audio - (Bidirectional)

5 Not Connected

6 Ground Ground

7 Radio On/Off Control This is the Enhanced Control Head service request input. A level of 5 volts

indicates that the Enhanced Control Head needs to communicate with the radio. In

addition it switches on the radio's voltage regulators. The idle state is a level below

0.6V.

8 SCI_TX This if for communication between the radio and the Enhanced Control Head.

9 FLT_A+ This voltage is at battery voltage level and is available as long as the radio is

connected to the supply voltage. The maximum current is 300mA. A fuse in the

radio prevents further circuit damage in case of shorting this pin to ground.

10 Analog Ground Analog Ground

Table 11 25-Pin subD Connector

Pin Function Description

1 GND Ground

2 RS232_SCI_TX Transceive data (RS232 line with RS232 level)

3 RS232_SCI_RX Receive data (RS232 line with RS232 level)

4 RS232_RTS Request to Send (RS232 line with RS232 level)

5 RS232_CTS Clear to Send (RS232 line with RS232 level)

6 FLT_A+ Filtered unswitched U

+ / 200mA

7 Signal_GND Ground for RS232

9 NC Not Connected

10 NC Not Connected

11 NC Not Connected

12 SW_B+ Switched U

+/100mA

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 79 80

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Motorola MTM5400 Manuel d'installation Page 63