Remote Control:
The optional Remote Control MFJ-4416BRC can be used to monitor and
control the MFJ-4418 allowing the MFJ-4418 to be mounted in an out of the way place in the
vehicle. The connection is a normal CAT-5 cable that plugs into the MFJ-4416BRC and the
MFJ-4418 REMOTE CONTROL RJ-45 Jack.
Programmable Internal Control
: The programmable “Enable on input at low limit”
function
will set up the MFJ-4418 to boost only when needed with the programmable settings. With the
“Enable on input at low limit” check box checked the MFJ-4418 will boost whenever the voltage
has dropped below the “ENABLE LOW LIMIT” setting and will quit boosting when the “Enable
High Limit” is obtained. This setting is handy to reduce any noise from the switching circuit
when the MFJ-4418 is not needed to boost the voltage. See “Programming the MFJ-4418”
section. This mode does not require any connections to the radio and does not require the Boost
Enable switch to be pushed in. Any external connections or the Boost Enable switch will
override this function.
Figure 5 Ignition Connection and Remote Control Connection
EXTERNAL BOOST CONNECTOR
DE-9 Pin
Function
1
GROUND TO ENABLE pulled to +5V with internal 1.6K pull-up resistor.
2
GROUND TO ENABLE pulled to +5V with internal 1.6K pull-up resistor.
3
HIGH TO ENABLE any voltage between 4 and 15V
4
HIGH TO ENABLE any voltage between 4 and 15V
5
13V DC OUTPUT resettable fuse limited to 100mA (boosted)
6 to 9
GROUND
Figure 6 External Boost Wiring Chart
REMOTE CONTROL CONNECTOR
RJ-45 Pin
Function
1
INPUT VOLTAGE, resettable fuse limited to 100mA (unboosted)
3
ENABLE SIGNAL, ground to enable.
5
LOW VOLTAGE ALARM SIGNAL, ground indicates alarm condition.
7
OUTPUT VOLTAGE, resettable fuse limited to 100mA (boosted)
2, 4, 6, 8
GROUND
Figure 7 Remote Control Wiring Chart
Содержание MFJ-4418
Страница 1: ......
Страница 17: ...Schematics Figure 11 SMPS Section Schematic...
Страница 18: ...Figure 12 Control Section Schematic...
Страница 19: ...Figure 13 CPU Section...