Codan-radio MT-4E Analog and P25 Digital - User Guide Instrukcja Użytkownika Pobierz pdf (Strona 50)

USER GUIDE | MT-4E ANALOG & P25 DIGITAL RADIO SYSTEMS

Chapter 6: Radio System ComponentsPage 42

Antenna Relay Activation

The motherboard on the subrack contains a set of jumpers that are used to activate the optional antenna

relays in the System Regulator module from the Transmitter PTT IN and PTT OUT signal lines. Figure

6-3 shows the location of these jumpers.

JU36 TXA PTT OUT activates Relay A JU37 TXA PTT IN activates Relay A

JU39 TXA PTT OUT activates Relay B JU40 TXA PTT IN activates Relay B

JU42 TXB PTT OUT activates Relay A JU43 TXB PTT IN activates Relay A

JU45 TXB PTT OUT activates Relay B JU46 TXB PTT IN activates Relay B

Simplex Operation

The motherboard on the subrack contains a set of jumpers that are enabled when the radio system is

operated in simplex mode (simplex base station or simplex links). The jumper connects the Transmitter

PTT OUT signal line to the RX MUTE. This jumper will cause the receiver to mute when the transmitter

is keyed.

JU38 TXA PTT OUT mutes RXA JU41 TXA PTT OUT mutes RXB

JU44 TXB PTT OUT mutes RXA JU47 TXB PTT OUT mutes RXB

Figure 6-3: Subrack / Motherboard Rear View

A SIDE

BANK AND CHANNEL

SELECT JUMPERS

B SIDE

BANK AND CHANNEL

SELECT JUMPERS

POWER INPUT

+10 to +17 Vdc

+13.8 Vdc NOMINAL

15 AMP FAST

BLOW FUSE

(5604-5GAGC150)

+13.8 Vdc LINE

TRANSIENT SUPPRESSOR

(2007-1N637800) &

REVERSE VOLTAGE DIODE

(2001-MR751000)

+9.5 Vdc LINE

TRANSIENT SUPPRESSOR

(2007-1N637500) &

REVERSE VOLTAGE DIODE

(2001-MR751000)

+9.5 Vdc REGULATED

POWER INPUT /

OUTPUT

(NOT TYPICALLY USED)

CHANNEL SELECT

PULL-UP OR EXTERNAL

CONTROL JUMPERS

ANTENNA RELAY

& RX MUTE

ACTIVATION

JUMPERS

TELEX AND

AUXILIARY

CONNECTORS

CHANNEL SELECT

PULL-UP OR

EXTERNAL

CONTROL

JUMPERS

CI-RC-4M-G2

CONNECTOR

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 56 57 58

Komentarze do niniejszej Instrukcji

Brak uwag

Codan-radio MT-4E Analog and P25 Digital - User Guide Instrukcja Użytkownika Strona 50

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Radiostacje Codan-radio MT-4E Analog and P25 Digital - User Guide