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CONNECTING THE CABLES FOR CARD EDGE CONNECTOR (MBA-3)
,
D Power cable wiring
Use two pairs of #18 AWG wire for the power and power
connections.
Rear view
_
A
F
R S
Power ground
1
6
14
15
+
Circuit
13.8 V DC
breaker
or 27.5 V DC
(10 A)
• Circuit breaker
To prevent physical damage, a 10 A circuit breaker MUST be
installed in the DC power line in the aircraft. Install the circuit
breaker in the aircraft breaker panel or instrument panel to
ensure easy access during flight.
• Power Ground
Connect the transceiver power ground to the aircraft ground.
D Yoke-mounted memory and frequency exchange
switches
For the yoke-mounted memory and frequency exchange
switches, use a two-position spring loaded rocker switch or
two separate momentary push switches.
Rear view
A
L
S
1
12
15
Frequency
exchange
switch
Memory switch
OR
A
L
S
12
15
1
Frequency
exchange
switch
Memory switch
D Transmit/receive interlock connections
When two transceivers are installed, connect pin N to the
other transceiver
PTT line, and connect pin 9 to the other
's
transceiver
's
interlock line to prevent both transceivers from
simultaneously transmitting.
However, when two transceivers are installed through a dual
audio panel, the connections are not necessary.
MARKING A MOUNTING HOLE
⁄0
D Notes for making the mounting hole
The transceiver can be mounted securely in the supplied
mounting bracket.
Remember to allow adequate space for installation of cables
and connectors.
When installing two or more transceivers in a stack, the mount-
ing bracket should be 1.3 mm
0.05"
apart.
(
)
D Mounting bracket dimensions
260 mm (10.2 ")
D Front panel dimensions
DUAL
EC
VOL
118.00 128.10
PUSH
OFF
TEST
160 mm (6.3")
Allow space for the front panel as shown above.
D Template
Cut out dimensions for the mounting bracket as follows.
D Audio line connection
Use #24 AWG wire for the connections.
• Two headsets with intercom
PTT switch
Intercom switch
External speaker
A
C D
E
H
J
K
S
1
3
4
5
7 8 9 10
15
Headphone jack 1
(to 500 Ω Headphones)
Headphone jack 2
Auxiliary audio 1
Auxiliary audio 3
Audio control panel
Auxiliary audio 2
• One headset
PTT switch
External speaker
A
C D
E
H
J
S
1
4
5
7 8 9
15
Headphone jack
Auxiliary audio 1
Auxiliary audio 3
Audio control panel
Auxiliary audio 2
D GPS receiver connection
Connect the GPS receiver's input terminal to the pin 1, and
output terminal to pin 2.
Rear view
A
S
1
2
15
GPS receiver's output
GPS
receiver
GPS receiver's input
The mounting bracket has 0.6 mm
(
0.024"
)
dimples in the
top, bottom, and both sides for proper spacing.
Mark and cut the mounting holes.
To support the mounting bracket, the rear mounting bosses
should be attached to the airframe.
33 mm (1.3")
160 mm (6.3")
COMM
RCL
MEM
160 mm (6
")
5
⁄
16
MOUNTING BRACKET ASSEMBLY
.
Microphone
jack 1
Microphone
jack 2
!0 Self-crimping nut
o Antenna cable clip
!2 Nut
t K-Lock Nut
Microphone
jack
!3 Crimp nut
e Connector pins
w D-sub 25 pin connector
MOUNTING TO THE BRACKET
⁄1
D Transceiver installation
Remove the front panel from the transceiver's main unit.
q
- Use a
3
⁄
" allen wrench.
32
- Carefully disconnect the cable from the front panel.
(Fig. 1)
Insert a
3
" allen wrench into the hole of the main unit
w
⁄
32
and unscrew the inside lock screw until the metal catch
touches the chassis hole. (Fig. 2)
Main unit front view
Main unit front view
Rotate the lock screw clockwise four revolutions (Fig. 3),
e
and then rotate counterclockwise a quarter revolution.
(Fig. 4)
Insert the main unit (transceiver) into the mounting brack-
r
et. (Fig. 5)
Screw the lock screw to fix the main unit (transceiver) to
t
the bracket. (Fig. 6)
Fig. 1
CAUTION: Treat the cable with
care when disconnecting it.
Fig. 5
OPERATION CHECK
⁄2
Check the following points after transceiver installation.
- Polarity of the power supply.
- NO interference caused to other equipment.
- NO noise or interference from other equipment.
1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan
Printed on recycled paper with soy ink.
q Mounting
bracket
L-type BNC
y BNC-LP
connector
(User supplied, if required)
u Washer
y BNC-LP
i C-shaped ring
!4 Screws
!1 Screw
r Screws Bind UNC
y
Connect the cable. (Fig. 7)
u
Attach the front panel and tighten the allen screws .
(Fig. 7)
CAUTION: Make sure that the cable between the trans-
ceiver and front panel is securely connected. The trans-
ceiver may not function properly when loose or when a
wrong connection is made.
Improper cable connection can cause damage and result
in severe non-warranty repair.
D Transceiver removal
The transceiver can be easily removed from the mounting
bracket, if required.
Remove the front panel from the transceiver's main unit.
q
" allen wrench.
- Use a
3
⁄
32
- Carefully disconnect the cable from the front panel.
Insert a
3
⁄
" allen wrench into the hole of the main unit and
w
32
unscrew the inside lock screw.
Slowly pull the transceiver out from the mounting bracket.
e
r
Connect the cable to the front panel.
t
Attach the front panel and tighten the allen screws.
Fig. 2
Fig. 3
• Metal catch position
Screw four revolutions
Metal catch
Fig. 6
- VSWR is less than 2.5:1.
- Communication capability on both the highest and lowest
communication frequencies, if possible.
Coaxial
connector
q Mounting
bracket
Fig. 4
Surface
Unscrew a quarter
revolution
Cable
CAUTION: Treat the cable
with care when connecting it.
A-7210D-2EX-a
Printed in Japan
© 2015 Icom Inc.
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