Motorola TETRA MTM800 Installationshandbuch PDF herunterladen (Seite 61)

INSTALLATION MTM700/MTM800 Mobile Terminal / Installation Manual 61

10 IGNITION Connecting this pin to the ignition line of the vehicle that will automatically turn on the

radio if ignition of the vehicle is turned on. High active.

11 RX_AUDIO This is the received RX signal. Output impedance approximate 600 Ohms; unsymmet-

rical;

output level = 775mV

RMS

12 AUDIO_PA_ENABLE This is a digital input. High level or pin open enables the audio PA; Low level disables

the audio PA.

13 SWB + This voltage is available when the radio is switched on.

The max. current is 1.0A w/o GPS board and 0.8A with GPS board mounted.

14 HOOK This is a high active digital input.

Low = on hook; High = off hook

15 SCI_DTR Data Terminal Ready, used for clock input for high speed flashing. Reserved for Ser-

vice Aids.

16 SPEAKER + Positive output of radio's audio PA (see Pin 1).

17 * SCI_CTS Radio OUTPUT: Clear To Send (reserved for service aids)

18 * SCI_RTS Radio INPUT: Request To Send (reserved for service aids)

19 * SCI_RXD Radio OUTPUT: Receive Data (reserved for service aids)

20 * SCI_TXD Radio INPUT: Transmit Data (reserved for service aids)

NOTE *

The 4-wire 3 Volts SCI interface on the accessory connector (pins 17 -20) can only

be used for flashing of radio firmware and programming software features. It can

NOT be used for communication during normal radio operation.

Table 10

7-Pin RS232 connector (only available on MTM700)

Pin Function Description

1 GND Ground

2 NC Guide Pin

3 CTS Clear to Send

4 RTS Request to send

5 SCI-TX Transmit Data

6 SCI-RX Receive Data

7 GND Ground

Table 9 20-Pin Accessory Connector

Pin Function Description

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 81 82

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Motorola TETRA MTM800 Installationshandbuch Seite 61