Cessna 172SPHUSR05 Pilot Operating Handbook page 470

SECTION 9 - S U PPLEMENTS
SUPPLEME NT 22 - FAA APPROVED
The mating plug is a plastic 9-pin circular connector with a q uick
disconnect push button release (Hypertronics D02PBMRTH-0025 or
equivalent) (See Figure 2). Adapter cable assemblies are available
that feature the ARINC 628 plug with a standard automotive
cigarette lighter socket (Radio Shack, Cat. No. 270-1 580 or similar) .
Most laptop computer manufacturers and a number of accessory
manufacturers (Absolute Battery, Mobility E lectronics, USI, Extended
Microdevices, etc.) can provide suitable power cables for these
devices. A light-colored mating plug is preferred for visibility.
Plug Contact Assignments
2
3
4
822 -4
R ELEASE
BUTTON
Figu re 2. Mating Plug
used
Not
Not used
used
Not
Not used
Not used
Enable
Output
Enable
Output RTN
(+)
Output Power
H
Output Power RTN
Figure Mating Plug Wiring
3 .
C ESSNA
MODEL 1 72S
Voltage Adapter