vision microsystems VM 1000 User manual

lvuzvtEi t trN MttrFtoSYslTEMs ;tNtr.
ADVANCED ELECTRONIC INSTRUMENTATION
PURCHASER I USER AGREEMENT
The purchaser and/or user,'by accepting this equiprnent, agrees to
hold VISION MICROSYSTEMS INCORPORATED, its ownersi
assigns, heirs and employees, free and harmless from all loss,
liability or damage resulting from claims brought by ally, reason of,
alleged failure or defect of any parts supplied by ,.
VISION MICROSYSTEMS INCORPORATED.
VISION MICROSYSTEMS INCORPORATED hAs made every efforl
todocumentthisproductaGcUratelyemctirnptaety.Howeve;,.
VISION MICROSYSTEMS INCORPORATED assurnes no{iability for
errors or for damages that result from the use of this manual or Ih "q
equipment it accompanies.
VISION MICROSYSTEMS INCORPORATED reserves the rl$ht to
make changes to this manual and the product at any time without
notice.
iffiTii TO RECEIVE WARRANTEE COVERAGE I*****t
FILL OUT AND RETURN THE WARRANTEE AGREEMENT.
VISION MICROSYSTEMS INCORPORATED
4071 Hannegan Suite T
BELLINGHAM, WASHINGTON 98226
PHONE (360\ 714-8203 FAX [phone]
VISION MICROSYSTEMS INCORPORATED
(c) l ees
All rights reserved
VM IO{IO OWNERS MAN[IAL'
(t4 - -t*"t\ U*\
5010002 REV F

TABLE OF CONTENTS
\__i.0 Dpu, swTcH, DtspLAy CABLE |NSTALLATION..............7
1.0.1 DPU MOUNTTNG .....................r.7
1.0.2 DpU WtRtNG..... ........................7'
1.0.3 INDICATOR MOUNTING & WIRING
1.0.4 DTSPLAY CABLE FABR|CAT|ON............ .......................8
1.0.5 MODE SWTTCH |NST.......... .....9.
1.1 TACHOMETER SYSTEM INSTALLATION .........10
1.1.1 TACH XDUCER |NST.......... ...10
\-. 1.1.2 TACHOMETER TRANSDUCER WtRtNG .....................10
1.2 MANIFOLD PRESSURE SYSTEM INSTALLATION ........... 11
1.2.1 MANTFOLD PRES. TRANSDUCER |NST.... .................11
1.2.2 MANIFOLD PRES. TRANSDUCER WIRING ................11
1.3 otL SYSTEM TNSTALLATTON ............12
1.3.1 OIL TEMPERATURE TRANSDUCER INST.......... .......12
1.3.2 olL PRESSURE TRANSDUGER |NST..... ....................12:
1.3.3 otl SYSTEM WtRtNG. ............12
5rlil)002 REv FVMTI}IIO OWNERS MANUAL

TABLE OF CONTENTS
.1.4 FUEL COMPUTER SYSTEM INSTALLATION ....13
"* 1..4.1 FUEL FLow TRANsDUcER rNsr. .........:.. 1g ,--
' ' 1.4.1 FUEL PRES. TRANSDUCER INST. (P/N 3010016, 171...................14
''-'r'.3.3 FUELcoMpurERxDucERWtRtNG ............,...;.........14
,.
1:s cvtrNDER ANALvZER tNsrALLATtoN ............15
il
"'1.5.1 CYLINDER HEAD TEMP PROBE INST. .....15
-1.5.2 EXHAUST GAS TEMP PROBE |NST.......... ..................15
r l.'
- 1.5.3 CYLINDER HEAD PROBE WIRING ............16
.*:*.s.n EXHAUST GAS PROBE WIRING ...............17
rF, .' j
lHe' elecrRtcAl sysrEM tNsrALLATloN ............................ 1 8 -
*t.e.t ELEcTRTcAL sysrEM tNsr.......... ........... 18
!.
'"*.r.6.2 VoLTAGE sENsE wrRE tNsr.......... .........18
^.':
t'i.6.3 AMp TRANsDUcER INST.......... ................ i8
.f:t,0.4 ELECTRICAL SYSTEM WIRING ..............,.18
iSrf..AlR TEMP SYSTEM INSTALLATION....'.. ...........19
,.7.7.1AlRTEMPlNDlcAToRlNsT.(P/N40100t0)
d'*1.7.2 O.A.T. TRANSDUCER INST. (P/N 30100201...................................19
'st.7.g c.A.T. TRANsDUcER rNsr. (p/N 30100201............... ..19 --
Stlt{Xt02 REv F
!.: VM II}I}II OWNERS MANUAL

TABLE OF CONTENTS : ,: i.
1.8 CHRONOMETER SYSTEM TNSTALLATTON :.::.,20
\--, 1.8.1 CHRONOMETER |ND|CATOR |NST.......... .............,:._ 20
1.8.2 CHRONOMETER MODE SWTTCH |NST.......... ........." 20
1.9 EClOO INSTALLATION ,_i
1.9.1 ECl00 |ND|CATOR NSTALLAT|ON......... ..........:.,,21
1.9.2 ECl00 TO DpU CONNECT|ON............. .......................21
:
1.9.3 EC100 WtRtNG .........,.............21
.i; a:.
1.10 FUEL LEVEL SYSTEM lNSTALLATlON.......rrr-r.r-rrirri .*"i22
1.10.1 FUEL LEVEL SYSTEM INDICATOR INST..........
\, LEVEL SYSTEM |ND|CATOR tNST.........................,.:lE:..8,ff
1.10.2 FUEL LEVEL MOUNTING KIT !NST.... .....................:.22
.l
1.10.3 FUEL PROBE |NST......... .................::.=s..,2;4
1.10.410 BOARD WtRtNG..... ...,.::,r.rZS
2.1 tNtTtAL SYSTEM SET-UP.:.............. ..............;,;;,27
2.2 TACHOMETER OPERAT!ON.......... ....2$
;.\ t,.
2.3 MANTFOLD PRESSURE OPERAT|ON....... .........29
l.;
.*-2.4 OIL SYSTEM OPERATION ....."....,....,.30
5010002 REV FVMTOOO OWNERS MANUAL

't'A Bt,E Otr coN'l'liN'l's
2.5 FUEL COMPUTER SYSTEM OPERATION ,........32
2.5.1 INITIAL SET UP OF THE FUEL COMPUTER ...............3:\_/
..2.5.2 ADDTNG FUEL TO THE FUEL COMPUTER .................34
2.5.3 FUEL COMPUTER NORMAL OPERATION MODES...................... 35
2.6 CYLINDER ANALYZER SYSTEM OPERATION ..,..............36
2.6.1 LEANING YOUR ENGINE:.... ......................37
2.7 ELECTRICAL MONITORING SYSTEM OPERATION.........38
ZS AIR TEMPERATURE SYSTEM OPERATION......................39
{i
4P CHRONOMETER OPERArION.......... .................4c
"2.9.1 CHRONOMETER SET UP ........41
':2.9.2 CHRONOMETER NORMAL OPERATION:.............. .....43
, 2.9.3 STOP WATCH OPERAT1ON................ .......44
2.10 ECl00 oPERATION ...............,.......... ................45
:::'
2.11 FUEL LEVEL SYSTEM OPERATION.......... ......46
; ""t
2.11.1 FUEL LEVEL SYSTEM CAL|BRATION............ .......... 46
2.12 'AUTOTRACK'TM SVSTEM OPERATION ......48
2.13 FLIGHT DATA RECORDER SYSTEM OPERATION ........50
5t) ilt002 REv FVM II)I}II OWNERS MANUAI,

\_/
TABLE OF CONTENTS ,.i
3.1 INDICATOR CARE AND MAINTENANCE...... .....51
5010002 REV F VMIOOO OWNERS MANUAL
ii.

SECTION I INSTALLATION 7
1.0 DPU, SWITCH, DISPLAY CABLE INSTALLATION
1.0.1 DPU MOUNTING
The unit should not be mounted in the engine compartment, but
v installation and removal. NOTE: lf you have a'Fuel Level System'
you may want to calibrate it before mounting the DPU. (See section
on FUEL LEVEL SYSTEM OPERATION.)
1.0.2 DPU WIRING
All power, ground and transducer wires (except fuel level transducers
connect) to the DPU terminal blocks. See each respective
installation section for conneclions.
= DO NOT: connect J4-16 to the same aircraft circuit breaker as
J4-1 5.
- DO NOT: allow wire insulation or foreign objects into the
position being connected to.
- DO NOT: over tighten the set screw onto the wire. lnstead,
the wire needs to be securely held, but not crushed to the
point of separation. Test the wire for security after tightening.
The use of a 'Jewelers Screwdrive/ will provide enough
\--l torque for the job.
3 DO NOT: allow bare wires touch the metal case or adjacent
leads.
= DO NOT: bend the wires where they exit the terminal block
position, instead, form a radius away from the terminal block
position.
::) DO NOT: allow static electricity to contact any terminal.
Always discharge yourself to ground first !
DPU 'J4'TO POWER CONNECTIONS (Use 16 AWG wire)
All other DPU connections are described in each system installation
section.
50t0002 REv FVMI(}OO OWNERS MANUAL
DPU
TERM. WIRE COLOR CONNECT TO DESCRIPTION
J4-14 BLK GND BUS ACFT GROUND BUS
J4-15 RED 5 AMP BRKR ACFT POWER DIST SYSTEM
J4-16 WHT LITE CNTRL ACFT PANEL DIMMER SYSTEM
CASE BLK GND BUS ACFT GROUND BUS

SECTION I INSTAI,[,A'T'ION
1.0.3 INDICATOR MOUNTING & WIRING
The indicator is mounted to the panel from the back side. Four
mounting screws are provided for this purpose. Do not use longer
screws or damage to the instrument will result. The supplied screws
will accommodate panel thicknesses from 0.062 to 0.050 inches. lf a
panel thickness of other than this is required, then determine the
difference in thickness and procure new screw length accordingly.
Test your new screw lengths by finger tightening them into the panel
and indicator. The screws should tighten against the panel only and
should not 'bottom out' in the indicator. Be careful not to cross thread
the screws or the indicator bezel will be permanently damaged. The
indicator cut-out and mounting space requirement's information is
provided in 'SECTION 5 ILLUSTRATIONS'.
To wire indicators to DPU simply plug any display cable connector
into the back of the indicator observing the keying tab to notch.
1.0.4 DISPLAY CABLE FABRICATION
(P/N 401000s)
STEP 1: Carefully move the connectors into the positions required on
the flat. ribbon cable for your panel layout. They may face
either up or down. Look for the small embossed arrowhead on
the cable connectors that points to an edge of the cable.
MAKE SURE ALL CONNECTOR ARROWHEADS POINT TO
THE SAME EDGE OF THE CABLE AS THE INSTALLED DPU
CABLE CONNECTOR I
STEP 2: The connector is secured to the ribbon cable by closing it in
clean smooth jaws of a vise until ine sides 'snap over' into
position. Make sure the cable connector is SQUARE TO THE
CABLE before any closing takes place. Once installed,
connectors and cable cannot be re-used !
STEP 3: Once all connectors are installed, trim any excess cable
away by using a new SHARP pair of scissors. lnspect the cut
to insure that adjacent wires are not touching each other.
INSURE that once installed, the trimmed ends of the cable do not
touch anything.
50lr)002 REv FVM IIIIIII OWNERS MANUAL

SECTION I INSTALLATION
1.0.5 MODE SWITCH INST.
(P/N 3010023)
The mode selector switch assembly can be mounted anywhere within
reach of the indicator connector.
STEP 1: Once the switch hole has been located and drilled, remove
the paper backing and vinyl front covering from the switch
plate. The switch plate has an adhesive backing to aid in
placement of the plate. Press the plate into position.
STEP 2: Rotate the switch shaft as far counter-clockwise as it will
travel (as viewed facing the shaft). The switch comes with the
lock washer and nut loosely installed. When removing the nut,
DO NOT remove the silver ring underneath. lf you have
accidentally moved the silver ring, it should be placed back
onto the switch with the tab inserted into the hole between
switch position numbers '9' and '10'. This tab acts as a stop to
only allow 9 possible switch positions.
STEP 3: lnsert the switch assembly (switch, silver ring and lock
washer) through the back of the panel. Place the nut on the
switch and finger tighten. Place the knob over the shaft such
that one of the two set screws is perpendicular to the 'flat' on
the shaft. Tighten this set screw. Now rotate the entire switch
assembly until the slotted line on the knob is aligned with the
left lower white line on the switch plate.
STEP 4: lf necessary, carefully remove the knob without disturbing
the current switch assembly location. Now CAREFULLY
tighten the nut (too much force will break the switch) . lf
necessary, reinstall the knob as before and tighten both set
screws. Verify correct alignment with all switch plate positions.
Plug the switch assembly connector into the small connector
on the appropriate indicator.
5010002 REv FVMIOOO OWNERS MANUAL

IO SECTION I INSTAL,I,ATION
1.1 TACHOMETER SYSTEM INSTALLATION
1.1 .1 TACH XDUCER INST.
(P/N 3010004 BENDIX, 3010005 SLICK)
The transducer is screwed into the 'magnet vent port' nearest the
magneto mounting flange, where the magneto attaches to engine. Do
not mistake the 'rotor vent port' nearest the spark plug harness
assembly for it.
lf possible, install xducer to the non impulse coupled magneto. See
engine manual for correct location.
Once properly identified, remove the existing vent plug and screw the
sensor in its place, then tighten.
lf you are connecting to an Electronic lgnition, only connect the
manufacturers 'tach signal output' to J4 -12 and install blocking diode
(such as 1 N914) in series with cathode (bar) going to ignition side.
*** CAUTION*** Always discharge yourself to ground before wiring,
1.1 .2 TACHOMETER TRANSDUCER WIRING
DPU
TERM. CABLE
COLOR XDUCER
WIRE XDUCER
DESCR. XDUCER
PART NO.
J4-10 BLK BLK .RPM XDCR 301 0004 / 5
J4-11 RED RED 3t |t
J4-12 WHT WHT It
NOTE: Connect cable bare shield wire to cable BLK wire at DPU and
snip off shield wire excess at sensor end.
5t)il)t)02 REV F VMll)tlll OWNERS MANUAL

SECTION I INSTALLATION
1.2 MANIFOLD PRESSURE SYSTEM INSTALLATION
1.2.1 MANIFOLD PRES. TRANSDUCER INST.
(P/N 3010015)
The transducer is mounted in the cabin area. The mounting block is
tapped with 10-32 UNF-28 threads for mounting. The pressure port
snubber (hex brass part) is tapped 1/4 NPT for plumbing.You will
typically procure and install a reducer (114 NPT male to 1/8 NPT
female) into the snubber, then plumb 1/8 hose to the manifold
pressure pick off port of the engine. NOTE: The snubber is shipped
loose with the manifold sensor assembly and MUST be final installed
with an aircraft fuel resistant pipe thread sealant I adhesive.
The transducer pressure port is connected to the engine manifold
pressure port via a fabricated hose and fitting assembly. See engine
manual for this location.
= DO NOT: remove or drill snubber inner silver filter
- DO NOT: mount the transducer near extremely hot areas such
as heater ducts, etc.
= DO NOT: mount the transducer where fluids may contact it
during operation or maintenance.
+ DO NOT: mount the transducer in the engine compartment.
=) DO NOT: mount the transducer lower than the engine manifold
access port, or accumulated fuel in the hose will not run back
into the engine.
= DO NOT: solder onto terminal lugs of the transducer.
*"*CAUTION*** Always discharge yourself to ground before wiring.
1.2.2 MANIFOLD PRES. TRANSDUCER WIRING
DPU
TERM. CABLE COLOR XDUCER
WIRE XDUCER
DESCR. XDUCER PART NO.
J3-9 WHT WHT MAN PRES 301 001 5
J3-10 GRN GRN
J3-11 RED RED al aa
J3-12 BLK BLK 3t l3
NOTE: Connect cable bare shield wire to cable BLK wire at DPU and
snip off shield wire excess at sensor end.
5010002 REv FVMIOOO OWNERS MANUAL
ll

I2 SECTION t INSTALI,ATION
1.3 OIL SYSTEM INSTALLATION
I.3.1 OIL TEMPERATURE TRANSDUCER INST.
(P/N 3010021)
The transducer is mounted on the engine and is designed for
mounting according to MS28034-1. Consult your engine manual for
the proper installation location. A gasket is supplied for use with the
temperature transducer. This gasket is designed to be used only
once.
1.3.2 OIL PRESSURE TRANSDUCER INST.
(P/N 3010018)
= Do NOT: MOUNT TRANSDUCER DIRECTLY ON ENGINE.
:) DO NOT: mount the transducer where fluids may contact it
during operation or maintenance.
:) DO NOT: solder onto terminal lugs of the transducer.
Mount the transducer in cabin or engine area using the provided
'Adelt' clamp to a STATIONARY location then safety wire it to the
clamp. Connect using the appropriate aircraft grade hose and fittings.
The transducer has a 1/8 NPT externalthread to accommodate many
plumbing options. BE CAREFUL not to dent or deform the transducer
in any way or improper operation will result. Do not block the tiny -\-./
vent hole centered on the back of the transducer between the
lerminals. Use only aircraft grade fittings and hoses. Refer to your
engine manual for the proper oil pressure connection port location.
"*" CAUTION**" Always discharge yourself to ground before wiring.
1.3.3 OIL SYSTEM WIRING
DPU
TERM. CABLE
COLOR XDUCER
PIN / WIRE .XDUCER
DESCR. XDUCER
PART NO.
J4-1 RED RED OIL TEMP 301 0021
J4-2 BLK BLK 3a
J3-1 WHT PIN 1OIL PRES 301 001 I
J3-2 GRN PIN 3t3 c
J3-3 RED PIN 4a3 $
J3-4 BLK PIN 233 33
NOTE: Connect cable bare shield wire to cable BLK wire at DPU and
snip off shield wire excess at sensor end.
s010002 REv F VMl0ll0 OWNERS MANUAL

\J
SECTION I INSTALLATION 13
1.4 FUEL COMPUTER SYSTEM INSTALLATION
1.4.1 FUEL FLOW TRANSDUCER INST.
(P/N 3010019, 32)
The inlet and outlet of the transducer are tapped with 1/4 inch
internal NPT. Use only aircraft grade hoses and fittings when
adapting to the 1/4 NPT. Wrap the transducer with a heat barrier
material such as 'FIRE SLEEVE'. The transducer should be mounted
where only filtered, clean fuel flows through it and on the enqine
pressurized sidg of the fuel svstelrn. The primary considerations
for mounting are:
=) DO NOT: mount the transducer where 'upstream turbulence'
exists (such as sharp bends or any disturbances in the fuel
line). A minimum straight run of 5 inches of inlet fuel line is
recommended after these types of disturbances to settle fuel
flow.
::) DO NOT: ground the flow transducer body to any part of the
engine or aircraft if possible, os this forms a'ground loop'path
through the grounded body of the transducer and may affect
the transducer signal. lf this cannot be complied with then
INSURE that the engine is EXTREMELY well grounded to the
same point as the DPU. Proper engine grounding is facilitated
by the use of a common ground BUS bar and heavy gauge (H
or lower AWG) wire. See your aircraft manual.
ORIENTATION
TRANSDUCER P/N 3010019 (CARBURETED) the transducer is
mounted with the arow on the side pointing straight UP and
also with the fuel flow in the proper direction (lN to OUT).
TRANSDUCER P/N 3010032 (INJECTED) mount the transducer
so that the three WIRE LEADS exit the transducer straight UP
and also with the fuel flow in the proper direction (lN to OUT).
The transducer is mounted 'in-line' between the fuel flow
controller and the flow divider and away from extreme heat.
50t0002 REv FVMIOOO OWNERS MANUAL

14 SECTION I INS'I'ALLA'I'ION
1.4.1 FUEL PRES. TRANSDUCER INST. (P/N 3010016,171
The transducer is mounted in the cabin area or engine compartment,
at your option.
+ DO NOT: MOUNT TRANSDUCER DIRECTLY ON ENGINE.
- DO NOT: mount lhe transducer where fluids may contact it
during operation or maintenance.
=) DO NOT: solder onto terminal lugs of the transducer.
Mount the transducer using the provided 'Adell' clamp to a
STATIONARY location then safety wire it to the clamp. Connect
using the appropriate aircraft grade hose and fittings. The transducer
has a 1/8 NPT externalthread to accommodate many plumbing
options. BE CAREFUL not to dent or deform the transducer in any
way or improper operation will result. Do not block the tiny vent hole
centered on the back of the transducer between the terminals.
FOR CARBURETED ENGINES, the fuel pressure should be
measured near the carburetor inlet.
FOR INJECTED ENGINES, the fuel pressure is measured at lhe fuel
inlet to the fuel controller assembly ( NOT at the fuel flow divider)
The iransducer has a 1/8 NPT external pipe thread to accommodate
many plumbing options. Use only a'ircraft grade fittings and hoses
and proper techniques.
'** CAUTION*** Always discharge yourself to ground before wiring'
1.3.3 FUEL COMPUTER XDUCER WIRING
DPU
TERM. CABLE
COLOR XDUCER
PIN / WIRE XDUCER
DESCR. XDUCER
PART NO.
J4-7 BLK BLK FUEL FLOW 301 0032
J4-8 RED RED ta
J4-9 WHT WHT $3a
J3-5 WHT PIN 1FUEL PRES 301 001 7
J3-6 GRN PIN 3a3 3l
J3-7 RED PIN 4tt ta
J3-8 BLK PIN 2aa al
NOTE: Connect cable bare shield wire to cable BLK wire at DPU and
snip off shield wire excess at sensor end.
5I}III(IO2 REV F VMIOOI} OWNERS MANUAL

\/
SECTION I INSTALLATION l5
1.5 CYLINDER ANALYZER INSTALLATION
1.5.1 CYLINDER HEAD TEMP PROBE INST.
(PlN 1020061)
lnstall the probe assemblies in the tapped holes located on the
underside of the cylinders. The threads in the holes may require
cleaning. Proceed carefully to prevent damaging the threads.
Route wires away from exhaust stacks and other heat sources with
enough slack to allow for engine vibration, etc. Do not route the leads
creating stress where they exit the probe. A gradual radius away from
the spring is best.
1.5.2 EXHAUST GAS TEMP PROBE INST.
(P/N 1020060)
Drill an adequate access hole, for the probe tip, in the exhaust pipe,
at a location 3.5 to 4 inches (if possible) down from the exhaust pipe
flange, such that the lead wires will exit the probe smoothly without
creating sharp bends, while remaining away from exhaust stacks and
other heat sources. Angle the probe assembly inward and toward the
back of the engine allowing the leads to be secured as they travel
back along the side of the engine oil sump.
lnstall the probe by opening the clamp ring and placing the probe into
the exhaust pipe drilled hole. Close and tighten the clamp ring using
a screwdriver. Do not over tighten clamp or clamp failure may
eventually occur. Make sure the clamp is not crooked on the exhaust
pipe or it will loosen up during flight.
Secure the wires along their paths to the DPU, to prevent vibration
and abrasion with enough slack to allow for engine vibration, etc.
Route wires away from exhaust stacks and other high heat sources.
Do not route the leads creating stress where they exit the probe. A
gradual radius away from the spring is best.
Use standard aircraft wiring techniques and materials.
50111002 REv FVMIOI}O OWNERS MANUAL

I6 SECTION I INSTAI,I,A'TION
1.5.3 CYLINDER HEAD PROBE WIRING
Utilizing the white and red color coded thermocouple extension wire
and terminals (contained in kit 30100021 31, connect probes at DPU
J1 connector as follows:
*** CAUTION*** Always discharge yourself to ground before wiring.
NOTE: Probe shorter lead is RED, and the longer is WHITE'
DPU
TERM. CABLE
COLOR XDUCER
WIRE XDUCER
DESCR. XDUCER
PART NO.
{t:1-
J1-2 Wil
RED wr[_
RED qul-1EB9qE._ 10_29q61
lt
J1-3 WHT WHT CHT 2 PROBE 1 020061
J1-4 RED RED ll 3a
{J:s-
J1-6 Wil
RED wr[_
RED 9Ut9 EB9qE -10?9q6J
3a
J1-7 WHT WHT CHT 4 PROBE 1 020061
J1-8 RED RED 3a tl
J1-9 WHT WHT CHT 5 PROBE 1 02006 1
-Jr:r o -RED RED
J1-1 1WHT WHT CHT 6 PROBE 1 020061
J1-12 RED RED
NOTE: For4 cyl engines, jumperJl-9 to J1-10 and J1-11 to J1-12.
SIIIO(IO2 REV F . VMI(}I}II OWNERS MANUAL

SECTION I INSTALLATION 17
1.5.4 EXHAUST GAS PROBE WIRING
Utilizing the yellow and red color coded thermocouple extension wire
\---, and terminals (contained in kit 3010002 / 3), connect probes at the
DPU J2 connector as follows:
*** CAUTION*** Always discharge yourself to ground before wiring.
NOTE: Probe shorter lead is YELLOW, and longer RED.
J-'..--,,
NOTE: For4 cyl engines, jumper J2-9to J2-1 0 and J2-11 lo J2-12.
5010002 Rf,v FVMIOOO OWNERS MANUAL
DPU
TERM. CABLE COLOR XDUCER WIRE XDUCER DESCR. XDUCER
PART NO.
J2-1 YEL YEL EGT 1 PROBE 1 020060
J2-2 RED RED 3t $
J2-3 YEL YEL EGT 2 PROBE 1 020060
J2-4 RED RED
J2-5 YEL YEL EGT 3 PROBE 1 020060
J2-6 RED RED $
J2-7 YEL YEL EGT 4 PROBE 1 020060
J2-8 RED RED aa
J2-9 YEL YEL EGT 5 PROBE 1 020060
J2-10 RED RED at
J2-11 YEL YEL EGT 6 PROBE 1 020060
J2-12 RED RED al

I8 SECTION I TNSTAI,I,A-TION
1,6 ELECTRICAL SYSTEM INSTALLATION
1.6.1 ELECTRICAL SYSTEM INST.
Follow the instructions below to install the volt and amp functions.
1.6.2 VOLTAGE SENSE WIRE INST.
The sense wire can be connected directly to the main bus, the
avionics bus, or any other point for voltage measurement, as long as
the voltage does not exceed +36 VDC.
1.6.3 AMP TRANSDUCER INST.
(P/N 3010022)
The amp system functions as an'alternator load meter'displaying
current flow FROM the alternator TO the aircraft electrical system
allowing you to see if a load (such as pitot heat) is really drawing
current.when turned on. The transducer is mounted in the cabin area.
Route the wire connecting the alternator output (usually marked
'BAT') through the transducer so that it EXITS ON THE
TRANSDUCERS BLACK PLASTIC SIDE then continues ultimately to
the breaker / main bus. lf properly installed, the AMPS readout will
increase as more electrical loads are turned on and the alternator is
active. Shielded alternator wire is OK.
1.6.4 ELECTRICAL SYSTEM WIRING
DPU
TERM. CABLE COLOR XDUCER
WIRE COLOR XDUCER
DESCR. XDUCER
PART NO.
J4-13 RED N/A (ACFT +BUS) N/A
J3-13 GRN GRN AMP XDUCER 301 0022
J3-14 WHT WHT a3
J3-15 RED RED
J3-16 BLK BLK ll at
NOTE: Connect cable bare shield wire to cable BLK wire at DPU and
snip off shield wire excess at sensor end.
5OT(IOO2 REV F VMIOI}O OWNERS MANUAL

SECTION I INSTALLATION I9
I.7 AIR TEMP SYSTEM INSTALLATION
1.7.1 ArR TEMP INDICATOR INST. (P/N 4010010)
\r' The indicator is simply installed by following instructions in section
titled DPU, INDICATOR and MODE SWITCH installation.
1.7.2 O.A.T. TRANSDUCER INST. (P/N 3010020)
Mount the transducer in an area of outside air that is undisturbed and
not affected by engine or cabin heat. The transducer thread is 114-28
UNF-2A. Do not over tighten the transducer or damage will result.
1.7.3 C.A.T. TRANSDUCER INST. (P/N 30100201
The transducer is mounted in the forward side of the carburetor via
an access hole that is cast into the carb body (see SECTION 5
ILLUSTRATIONS). lf this hole is filled with a lead ball plug, it will
have to be removed, counter-bored and tapped. The transducer
thread size is 114-28 UNF-2A. Consult a licensed A&P mechanic for
this operation. lf it has a lhreaded plug, remove it. lnstall an internal
lock washer over the lransducer (not included) and insert the
transducer. lnsure that it turns completely into the threads and
\---l 'bottoms out'against the flat surface on the carburetor. Remove
again and apply a thread qealant with light locking properties on only
the last three threads nearest the hex head of the probe and re-
install. Do not over tighten the transducer or damage will result. We
recommend finger tightening the transducer, then carefully tightening
a max of 1/6 to 1/4 additionalturn.
***CAUTION*** Always discharge yourself to ground before wiring.
DPU
TERM. CABLE
COLOR XDUCER
WIRE XDUCER
FUNCTION XDUCER
PART NO.
J4-3 RED RED O.A.T 301 0020
J4-4 BLK BLK ll
J4-5 RED RED c.A.T. 301 0020
J4-6 BLK BLK lt
NOTE: Shield wire not connected
5010002 REv FVMIIIOO OWNERS MANUAL

20 SECTION I INSTALI",A-[ION
1.8 CHRONOMETER SYSTEM INSTALLATION
1.8.1 GHRONOMETER INDICATOR INST.
(P/N 401'001 1)
The indicator is simply installed by following instructions in section
titled DPU, INDICATOR and MODE SWITCH installation
1.8.2 CHRONOMETER MODE SWITCH INST.
(P/N 3010023)
See SECTION titled 'DPU, lndicator and Mode Switch installation'.
5OIIIOO2 REV F VMIOIIO OWNERS MANUAL