Revision 8, May 2020
Page 3
200-123-0003
1.8
License Requirements
None
Section 2 Installation
2.1
General Information
The
PM1000
II
comes with all necessary hardware for
installation.
Installation of the
PM1000
II
, using the available wir-
ing and hardware supplied, does not require special
tools or knowledge other than described in FAA Advi-
sory Circular 43.13-2B. It is the installer's responsibil-
ity to determine the approval basis for this installation.
An FAA From 337, or other approval
may
be required.
See Appendix B for example of FAA Form 337.
2.2
Unpacking and inspection
The
PM1000
II
was carefully inspected mechanically
and thoroughly tested electronically before shipment.
It should be free of electrical or cosmetic defect. Upon
receipt, verify that the parts kit includes the following:
2.3
Equipment installation proce-
dures
1.Using the template, drill six holes in the instrument
panel in a location convenient to the pilot position.
2.Insert the
PM1000
II
from behind the instrument
panel, aligning the holes for the knobs, LED, and
switch.
3.Place the aluminum face-plate over the knob shafts
and secure, using the two # 4-40 round head
screws provided.
4.Install the knobs over the volume and squelch con-
trol shafts.
Note, an optional mounting plate for 2¼” round instru-
ment hole is available. See page 7.
2.4
Cable harness wiring
To complete the installation, a wire harness must be
made as shown in Appendix D.
PS Engineering can make a custom-tailored wiring
harness for the installer. All harnesses use Mil-spec
quality components with professional techniques, and
are fully tested before shipment.
Contact PS Engineer-
ing for more information
.
If the aircraft already has pilot and copilot headset
jacks installed, you may re-use them. Remove and
discard all wires from the copilot headset jacks. You
may use the existing pilot headset jacks as the Auxilia-
ry Aircraft Radio Headset Jacks, but they should be
moved to a new location to avoid confusion with the
pilot's headphone jacks. In the event the intercom has
to be removed for any reason, these jacks provide ac-
cess to the aircraft radio system.
To connect intercom into the aircraft audio system,
parallel the appropriate set of cables from the intercom
to the Auxiliary Aircraft Radio Headset Jacks. Finally,
install new headset jacks into the aircraft and connect
them directly to the appropriate pins of the
PM1000
II
.
See the wiring diagram for all details of the wire har-
ness interconnects.
2.4.1 Electrical Noise Issues
WARNING: You must use separate shielded cables
for the microphone and headphone jacks. Combining
these two wires WILL cause loud oscillations and de-
grade the intercom function. The oscillation is caused
by the cross-coupling between the large headphone
signal and the small microphone signal. The resulting
NOTE
: Auxiliary microphone and headset
jacks are
required
for a complete installa-
tion. These provide troubleshooting and a
back-up access to the aircraft radios.
Part Number
Description
Quantity
475-442-0002 #4-40 Machine screws, black
2
625-002-0004 Concentric inner knobs
2
625-002-0001
625-010-0002
Outer knob
Cap with pointer
2
425-025-0095 25 pin Sub-d connector shell
1
425-020-5089 Male Pins– Crimp
25
625-025-0001 Connector hood
1
575-002-0004
575-002-0002
Reversible aluminum face plate
Reversible face plate w/crew
11922
11920
11910
4-place mono jack kit ,(incl. phones and
mic jack, insulating washers and 1/8”
music jack)
1
202-123-0001 Pilot’s Guide
1
122-102-0001 Drill Template
1
PM1000II Hole spacing (Not to scale)