
EX5000 Installation Manual
P/N 600-00073 Rev 24
- 21 -
4.4 Electrical and Sensor Interfaces
28-volt DC electrical power must be supplied to the MFD. In aircraft with a 28-volt system, the MFD is
usually connected to a non-essential avionics bus. Non-28-volt systems can use a reg28 VDC
converter. The MFD does not have an on/off switch and will start as soon as power is applied. The
MFD may be wired to the aircraft dimming bus to control front panel LED brightness via the cockpit
panel brightness control. The MFD uses a single 78 pin High Density, D-sub connector for all power
and electrical interfaces (See Figure 1, “Multi-Function Display Landscape and Portrait Rear Views,”
on page 4).
4.4.1 Wiring Notes
●
Power
—P1- input: 5 A @ 28 vdc.
■
Use 20 AWG for lengths greater than 3ft.
■
Use 22 AWG for P2 high-density sockets. Circuit breaker: 7.5 amp recommended.
■
For 14 vdc A/C, use 14 to 28 vdc converter (KGS Electronics RB-125, Ameri-King AK550-6 or
similar with TSO-C71, output 5 A min. @ 28 vdc.)
●
Dimming
—P1-input—Use 22 AWG, connect to a/c instrument dimming bus. Supports any range
0-28 vdc. Connection to dimming-bus ground reference required.
●
ARINC 429
—P1-wire—Use 22 AWG twisted shielded pair, MS22759/18-22-2 or equivalent.
Connect shield to P1 connector metallic backshell grounding screw with solder or crimp ring
terminal.
●
ARINC 453
—P1-wire—Use 22 AWG twisted double shielded pair (Quadrax), (Bendix/King p/n
024-00064-0000) or equivalent.
■
Connect outer shield to P1 connector metallic backshell grounding screw with solder or crimp
terminal ring.
■
Connect inner and outer shield to sensor connector metallic backshell grounding screw with
solder or crimp terminal ring.
●
RS-232
—P1-wire—Use 22 AWG shielded triple, MS22759/18-22-3 or equivalent.
■
Connect a dedicated RS-232 signal ground from the sensor to the MFD.
■
Connect shield to P1 connector metallic backshell grounding screw with solder or crimp ring
terminal.
●
ORBCOMM Two-Way (Narrowcast) Datalink Antenna
—J2-coax cable—Use M17/128-RG400,
(Thermax/CDT p/n RGS-400) high temperature, 50 ohm, stranded core with 0.038 o.d., or
equivalent
■
Terminate antenna end with BNC series plug connector.
■
See mechanical installation notes.
●
Shield Terminations
—Make shield termination as close as feasible to the protected signal wire
terminations.
Table 13: Electrical and Sensor Interface Wiring
Designation
Vendor
Part #
Description
P1
Positronic
DD78F10G00
78-Pin High Density Female D-Sub Connector
J2
Delta Electronics
4205-018-N995
50 Ohm Right Angle Plug BNC Connector
Summary of Contents for 700-00004 Series
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