Frequently Asked Questions:   Search Enter key words for your search and click 'Go' *Best viewed with Internet Explorer, Opera or Safari browsers. RPM and MAP Manifold Pressure not reading correctly? How do I adjust MAP constant?(Older software Rev.) What is the thread for the Manifold Pressure sensor? No RPM reading - shows only zero(0). Is my factory RPM sensor compatible? Will JPI products work with LASAR Ignition (Unison/Slick)? Will JPI products work with Light Speed Ignition? RPM, wrong reading or erratic. How do I adjust MAP constant?(New software Rev.) RPM sensors? How to hook up EDM-700-7C/9C to tach generator? EDM RPM to the mag 'P' leads? Upgrades Can a USB port be installed into the EDM-700/800? Is there a 3 1/8 bezel for the EDM-700/800? Fuel Flow upgrade. Trade in Classic Scanner for EDM-700? Can I add a serial port and memory to my older EDM-700? GPS Questions Allied Signal, Bendix/King (KLN , 88 loran, 89 or KLN 90), how to program? How should I program my EDM-700/760/800 for my GPS? Arnav 5000 GPS or Loran to EDM-700/760/800 and FS-450? How do I program Garmin 155 GPS for use with JPI EDM? How do I connect a Garmin GPS to JPI EDM? How do you know if the interface between the fuel flow and the GPS is working? Northstar M3P RS-232 to JPI EDM? Trimble TNL2000 GPS to EDM-700/760/800 ? How do you set the GPS-C Communications Output Format? Why does the EDM show "NO SIG" occasionally? FS-450 and a Garmin GNS 420 reading error. How to connect a GX50/55/60/65 Apollo? GPS: EDM is not sending out any data. What do the EDM's GPS Error messages mean? EDM is not sending out any data to GPS 'No RS-232 Data' message on the GPS. Apollo 360 Arnav R-21 LORAN King KLN-135 to JPI. Bendix/King KLN-90/90A/90B Benix/King KLN-94 Benix/King KLN-35 Benix/King KLN-89B Benix/King KLN-900 What data is transmitted from the EDM to the GPS? Garmin 150,155,55TX,165, 250, 250XL,30,300XL. Garmin 196/296/396/495/496 Garmin GPS 400(W) Garmin 430/530(W) to the EDM and FS-450. Garmin 480 to an EDM? Garmin 95XL hook up to JPI. Garmin 96/96C Lowrance 2000c Airmap GPS hookup to JPI. SkyForce AIM, KMD150 SkyForce Skymap II / IIC / III 'NO - COM' 'NO - SIG' 'NO - WPT' '--- REQ' or '--- RES' 'REQ','RES', and 'MPG' missing. II Morrow NMS-2001 & NMC-2001 II Morrow 820 Downloading Laptop only has USB ports? Black PC Interface cable pin assignments. USB Download Box downloads a 'U000000.JPI' file. No 'green' light on USB Download Box. Difference between 'DUMP NEW' and 'DUMP ALL'. EDM stops 'counting down' while downloading. "No Data transfer" message. I can not download my EDM. USB Download Box instructions. USB EDM downloading instructions. USB EDM not downloading. Can I use my MAC using Parallels or Boot Camp to use you downloading software? 'Hyper Terminal' in Windows XP to troubleshoot a possible cable/port problem. Download in 'real time'. Dimensions for the EDM download port? "I AM TIRED OF DOWNLOADING TO A LAPTOP." HOW TO DOWNLOAD THE EDM STEP-BY-STEP. USB Memory Stick is not recognized. FS450 and FS450M Twin How do I hook up the remote light? Something is wrong with my fuel flow on my FS-450? I need the STC's for my FS-450. My 450 is displaying no yellow LED's and no GPH, only the letter "A". My FS-450 is giving me a negative GPH - I have a pressurized carb or retun transducer setup. FS-450 reads negative values at some engine RPMs What is the current draw of the FS-450. Install time for the FS-450. Error msg: #22 & #18 Software Versions No field for setting 'carb filter'. No 'FILL? N' prompt. Interferance at frequency range 120 to 123.05. Voltage Issues BAT voltage wrong. What is the current draw for the EDM's? What voltage will the EDM's operate? Is the shunt included with the SlimLine Volt Amp Meter? EDM reads 0.5V less than measured bus voltage. What is the current draw of the FS-450? What is the best ground? What is EDM's voltage drop? Dimensions Data Download Jack Instrument dimensions. Mounting screw size for EDM & FS-450. Fuel Flow Can aluminum fittings be used with the FXT 201 or FXT 231 transducers? I sometimes fill 75 gallons and sometimes 65 (tab). How can I have both? Can FF be installed on a 7, 8, or 9 cyl. radial? How should I install the transducer? Fittings used on the transducer? Where does the Transducer get it's power? FF reads 50% of what it should be? Inaccurate/erratic fuel flow readings? Consistently high fuel flow readings? Do I need shielded wire? Does Beech Bonanza need a fuel flow transducer? Does FF option require a JPI-supplied transducer? Resetting the fuel USD to zero on the fuel flow option. Erratic readings on carbureted engine. Fuel USD on EDM is much higher than actual? FF reading high by about 10-30% Reading blank or zero FF. Can fuel flow be installed in the field? Difference of the #231 and #201 transducer. What transducer should I use? DO NOT blow air through the transducer! Transducer specs. How to change the fuel flow units? Fuel USD not same as fill amount. Do you have a Flowscan 201 with a K factor of 82.00? Pin assignments EDM fuel flow transducer? Fuel Flow Tester instructions. Tranducer K factors. Will the Bendix fuel flow transducer (3 wire) work with you fuel flow EDM's? FF harness P/N. To test the Transducer. Troubleshooting Fuel Flow Issues Probes Can I use an anti-seeze compound on the installing of your CHT bayonet probes? Can Alcor probes be used with EDM-700/800? Probe polarity? What crimp tool for probe eye terminals? Can Alcor probes be used with the EDM's? Parts that come with temperature probes? How long does a probe last? Can you splice the thermocouple probe wires? Do the copper eye termials affect reading of 'sensing' thermocouple? What is the millivolt values per different temperatures? Resistance measurement for temperature probes? How to tell if probes are grounded or ungrounded? What is the polarity for probe thermocouple connector? What is the thermocouple wire/probe type? Probe weight? Size of the CHT Bayonet probe - p/n 5050T EzTrends Issues "Specified argument was out of the range of valid values, Parameter name; Year, Month, and Day parameters describe an unrepresentable DateTime." EzPlot / EzTrends download times-out when USB adapter is being used. "SYSTEM. Unauthorized Access Exception: Access to path "C:EZTRENDSEzUpdatedCopy.exe" is denied." 'The arithmetic operation overflowed.' "Index Outside the Bounds of the Array." "Format of the file 'AxInterop.iPlotLibrary'. Is invalid." "Cannot open a database from a previous version of your application" message. "Error 1327.Invalid Drive: h:" message. To change to the individual .CSV files from a .DAT(Ezplot) and .JPI (Eztrends) file. Program 'freezes' and won't respond. Why is Eztrends not showing Oil T or other temps? Why is Eztrends not showing CLD or DIF? "An unhandled s=exception has occurred in your application..." message. CAN EZTRENDS RUN ON A 64 BIT COMPUTER? "Length cannot be less than zero. Parameter name: Length". "No Data Transfer" message while downloading. Change to the individual .CSV files from a .DAT(Ezplot) and .JPI(Eztrends)file. 'Data header error' (missing tail number). Downloaded data will not decompress. 'Run time error 339 componet MSCONM32.OCX or one of its dependencies not correctly registered'. 'BAD' flights displayed in Eztrends. Showing 'longer' flight than should. "Invalid Header File." "Abnormal termination error" "Common Language Runtime Errors" "Microsoft Visual C++ Runtime Library Error!" "Class not Registered" EDM 700 800 EDM Buttons are too recessed in front panel. Pin assignments. ADDING OIL PRESSURE TO AN EXISTING EDM-700/800 Setting the time, date, and 'N' number? Missing one or more columns. Display goes blank in flight. Display blank - EDM has power EDM will not power up. Display locks up or freezes. Displays readings for 'Options' that are not installed. Can an EDM replace a factory gauge? What size are the EDM's mounting screws? 'SNAP' feature does not work. Remote alarm light. Display flickers. EDM reading D# C-I EDM 'resets' when aircraft accessories are activated. Displays what appears to be valid temperatures, but the engine is not running. How do I adjust %HP setting without POH? Grounding the EDM. Display is too dim. Erratic readings. How do I adjust %HP setting? OIL PRESSURE OIL PRESSURE INACCURATE OR ERRATIC. VM 1000C Current draw. Aerosance FADEC SBC-250 What are the dimensions of the VM-1000C? Fuel Level Calibration. How to download the VM1000C. Leaning Issues LF Leans prematurely, before actual peak. EDM says "NO PEAK" immediately after entering LF mode. My EDM is old. Can I still do a Lean of Peak lean find? LF, the hottest EGT is not the peak EGT. Rich of Peak Procedure. LF finds peak too soon. Lean of Peak Procedure. CHT Where are the holes for the CHT probe on a 1962 C172? How to install CHT probes with Tanis heaters? No hole for CHT probes. Can a bayonet adapter be substituted for a gasket ? Missing one CHT bayonet probe. Can I use the the EGT/CHT probes from the KS Avionics Hexad with your EDM? Why does the EDM set its default CHT to 450? CHT/EGT's are reading about half of what they should be. EDM reads "high" for CHT CHT/EGT's reading half of what they should be. All CHT/EGT readings 'jumping' around in all modes. No 'holes' for CHT probes. CHT readings disappear with spark-plug gasket probes. CHT probes with Tanis heaters read "low" Both CHT and EGT read 300 degrees F too high. All CHT's reading 100 F too high. CHT reads high and EGT reads low. Erratic CHT & EGT readings on older EDM Gasket probe reads higher than other CHT probes. Gasket probe reads other than normal after spark-plug removal High, jumpy, or missing readings CHT - no reading. Low EGT & high EGT diff. Negative temp reading Only one missing segment for CHT. Probe(s) do not work on one engine on EDM-760? Some bars go off scale, either too high or too low Temp reading goes down when actual temp should be rising One CHT reads differently than the others All CHT and EGT readings jumping around in all modes. EGT and TIT Screw-in TIT probe? How far must the EGT probes be mounted from the cylinder head? EGT clamps are too short. Not enough thread slots. EGT probe slips out of mounting. TIT probe pin assignments for EDM-700/800. When power is reduced, EGTs increase to 1500. Can existing TIT probe be used? EGT bars go off scale high or low EGT probes with heat sink fins: what should I replace it with? How far must the EGT probes be mounted from the exhaust flange? DIF reading is too high. Bar graphs are too low (only a few segments). Blank EGT column - digital reading OK Blank EGT column and digits. EGTs & CHTs are reading about half of what they should be EGT & CHT read 300F too high EGT reading jumps up and down on one probe only. EGT reads low and CHT reads high EGT too high EGTs not uniform, especially during low power operation Older EDM with erratic CHT & EGT readings EGTs rise during single magneto check High, jumpy, or missing readings. Low EGT & high EGT DIF reading with no CHT reading. Missing one column, but column okay during self test at start up. Temperatures off by 25 degrees. Temps jump more than 500F in one second. Negative temperature reading. How to change EGT display resolution from 10 degrees to 1 degrees? How to mount EGT probes? TIT Calibration. Carb Probe Temps off by 25 degrees or incorrect. Carb probe says IAT and not CRB. EDM CDT, CRB, IAT. incorrect Carb temp is reading reverse: ex: ambient temp is 40 - the Carb temp is 80+/-. If heat is applied, the temp goes down instead of up. What is the Carb probe thread size? Torque value for the Carb probe? Where to install the carburetor temperature probe? Pin assignments for the EDM-700/800/760. Slim Line SlimLine ammeter does not read zero when alternator is off. Slim line Tach reading all '0000's across face? How to check if the two(2) wire 0-150 FP sensor is OK? How to check if the two(2) wire 0-30 FP sensor is OK? How to check four(4) wire 0-30 psi fuel pressure sensor if bad? Is there a round bezel 'adapter' for SL so the Slim can be installed in round 2 1/4" hole? SlimLine: Fuel pressure reads wrong (SL). Oil pressure reads wrong on Slim Line. To check to see if the Slim Line EGT, CHT, OAT, OIL, TIT, etc. are functioning. Do we sell a SL-Tach for 9 cylinder engines? SlimLine: What is the value for the optional fuses to the shunt? What is the value of the series dropping resistor on the older Slim Line series? SlimLine: What is the specification on the shunt? What are the Slim-line 'warning' lights? What is the weight of the Slim Line instruments? What are the dimensions of the Slim Line? EDM 700 800 Error Messages "LST FLT ERAS Y/N". "REF xxxxx" msg. 'DEMO' mode during startup.[EDM700/800] RCT BAT error BAD DATA error "CAL ERR" 'EGT n BAD' message when taps LeanFind on the ground with the engines off. 'KEY ERR' during startup. 'NO PK' during lean GPS, EDM shows "NO SIG" occasionally. 'OPEN PRB' error "PCT MEM" 'NO 2.5V, 50mV, 15mV.'[EDM-700/800/760] EDM-900/930 giving message: "Warning Config". 'REF' and a set of numbers after this. [EDM-700/800/760 ] "AUTO CAL" "Warning Config" msg. "BAD PRB" "NO DATA" "FULL 9x" at startup. "-569 - 09" EDM 900 or 930 Ammeter gauge on EDM-900/930 error. FP reads low. 930 has 'white' screen - does not go past that point. The EDM-930 display is 'bluish' and beeps. 0-30psi FP two wire sensor check. Install time for EDM 900/930. 0-150 Fuel/Oil Press.(2-wire) The four(4) wire FP on EDM-900/930 reading a negative value. To check the four(4)wire 0-30 psi FP sensor? Display showing red X's. How to check for software version. No FQ display graph. 'Dashes' or 'flashing' on the EDM-900 graphic 'gages' Can you change the Hobbs time in the field? RAD(Remote Alarm Display) shows 'jumbled' or incomplete characters. EDM Hobbs time greater than Flight time. FQ P5 wires to "resistive" senders. FQ harnesses. FQ Pennycap Hookup. OIL Probe Oil temp probe reads too low or wrong. Oil temp reads OK, but after some time in flight the Oil temp goes erratic - maybe even a 'hiss' on radio Oil temperature probe doesn't fit in engine.(p/n 400505 L/C) What are the pin assignments for the EDM-700/800 option probes? What are the pin assignments for the EDM-760 option probes? OIL temperature wrong. OIL temperature values 'blank' out. Column "freezes." EDM 760 760 shows 'zero' FF. Does the EDM-760 need to be grounded out to one of the engines? Sees only "JPI" on display. TIT probe pin assignments for EDM-760. Setting the Date, Time, and 'N' number in the EDM-760. Readings on one engine display are suspect. Display too dim. Install time for the EDM 760. OAT Probe Where should the OAT probe be mounted? EDM-700/800/760 Pin assignments. OAT reads wrong OAT temperature reading slowly climbs while on the ground. OAT wrong. Harness and Connectors How do you go through the pressure bulkhead? Do you need engineering drawings, field approval from the FAA? Can the wiring harness leads be shortened? How big is the EGT/CHT wire bundle for an EDM-700/800? Pin Extractor tool for the connectors? Grounding. Thermocouple wire type? What is the size of female connector pin? General Questions What is the warranty period? What are the dimensions of the various JPI instruments? What is the weight of the EDM ? Is a form 337 required for an EDM-700/800 installation? What are the normal ranges for temperatures? What is the thermocouple wire type used in JPI installations? Precautions to take before the installation. Installation times for JPI EDMs. Does JPI cover labor for removing or installing defective Parts? Remote alarm - signal pulse or steady? Are the EDM and FS-450 STC's: Airframe or Engine STC's? Is JPI ISO 9000 or AS9100 Certified? Where is Report #100? "Certificate of Compliance" Gem Conversion Trade in GEM for EDM-700? GEM adapter for EDM-700 has a connector clearance problem. Should GEM probes be replaced when upgrading to an EDM-700? Adapter for rear of instrument Should GEM probes be replaced by JPI probes when upgrading to EDM-700 conversion? All CHTs read around 100 degrees high on a GEM conversion EDM-700/760. Classic Scanner Can you use the new JPI 'braided' thermo wire with the older scanner, with set screw connectors? How is the terminal block adapter for the 'old' Classic Scanner wired? How to add probes to the Classic Scanner 100 series? How to determine if the the Classic Scanner 100 needs a grounded or ungrounded probe? Scanner (classic) trade in. EDM 930 Error messages 'WARNCFG' 'CONFIG ERR' 'MEM ON' 'HOBS ON' 'TEST I NG' '0.0 GPH' '--- GPH' '--- H.M' 'OPEN PRB' 'BAD-PRB' 'HI xx' 'LO xx' 'CAL ERR' 'DSP XXX' 'COMM ERR' 'NO 15 MV' 'NO 50MV' 'NO 2.5V' 'PWR DWN' 'WARNCAL' 'HOBSERR' 'HOBSBAD' 'HANGCFG' 'HANGCAL' "DATA COMMUNICATION ERROR" EPI800 and VM1000 OIL & OAT AMPS DISPLAY EGT/CHT ENGINE HRS RE-PROGRAMMING FUEL FLOW TRANSDUCER TEST FQ LEVEL MAP OIL and FUEL P. RPM Tach Time and HOBBS What EDM versions support Tach Time What is the difference between Tach Time and HOBBS Time? What is Tach Time and how do I set it up? Fuel Used Reminder Feature How do I setup Fuel Used Reminders? Primary Instrument Alarms How do I enable Pre-Alarm messages?           Copyright © 2008 J.P. Instruments, Inc. All Rights Reserved.