Table of Contents Integrated Measurement Interface Box Subject Page Introduction .3 Measuring Devices.8 Multimeter.10 Display Range.11 Range.11 Source (measurement source).11 Mode.12 Range.12 Using the Multimeter.13 Oscilloscope.14 Display Area.14 Graph Display .15 Measured Value Display .16 Range.16 Cursor and Display Settings.17 Channel .21 Trigger.22 Record Mode.24 Action Line.25 Signals .26 Using the Oscilloscope.28 Workshop Trolley.29 Basic Measurements.32 Wire Test.32 Closed Circuit Current Monitoring .34 Checking K-CAN.36 Recording and Analyzing Measurements.37 Alternator Test .38 Secondary Ignition Test .39 Checking the BSD Line .40 Checking Injector Signal .41 Checking PT-CAN.42 Initial Print Date: 04/10 Revision Date: 05/10 Integrated Measurement Interface Box (IMIB) Model: All Production: All ■micmiis After completion of this module you will be able to: • Identify the controls/interface of the IMIB • Demonstrate the use of the measuring devices • Perform measures with the Multimeter and Oscilloscope • Know how to set up the basic measurements in the IMIB 2 IMIB Introduction The Integrated Measurement Interface Box (IMIB) gives access to the measuring technology in the new workshop system. The compact shape of the Integrated Measurement Interface Box makes it a versatile tool fortesting signal transmitters, data lines and electronic components of vehicles. The Integrated Measurement Interface Box offers the following functions: • Voltage measurement • Current measurement with current clips up to 1,800 A • Resistance measurement • Pressure measurement: - Low-pressure measurement down to 2 bar onboard - Up to 100 bar with external sensor • Temperature measurement with external sensor • Use of: - RZV cable (static ignition voltage distribution) - kV clip (kilovolt clip) - Trigger clip • Two-channel oscilloscope • Stimuli function Note: For more information regarding IMIB, please refer to Dealernet and select: Menu>BMW>Aftersales Portal>Service>Workshop Technology and access the ISTA User Manual file. You can also type Workshop Technology in the search engine and that will prompt you to the correct web page. 3 IMIB Integrated Measurement Interface Box (IMIB) 4 IMIB Index Explanation Index Explanation 1 Button 11 USB Connection 2 ON / OFF Button 12 2.5 bar pressure sensor 3 3.5 inch LCD Display 13 Power Connection 4 Voltage measurement ground (-) 14 Trigger clip or temperature sensor connection 5 Voltage measurement connection 15 Connection of old Sensors: 25 bar pressure sensor, kV clip, RZV cable 6 2A current measurement connection 16 Connection of new sensors: e.g. 100 A current clip, 1,800 a current clip, 100 bar pressure sensor, temperature sensor 7 Voltage, current and resistance measurement ground (-) 17 Indicator for power supply source: external or battery 8 Connection for voltage, current, and resistance measurement 18 Indicator for battery charge and temperature warning 9 Stimuli connection 19 Indicator for WLAN mode 10 Workshop Network LAN connection 5 IMIB The measuring cables and sensors used with the Measurement Interface Box (MIB) to date, can for the most part, continue to be used. For oscilloscope measurements, standard measuring cables are used. These cables can also be used for voltage measurements. If a measurement is carried out during a diagnostic procedure, the result determined by the Integrated Measurement Interface Box is automatically evaluated in the diagnostics program and therefore influences the next diagnostics stage. In addition to its use in diagnostic procedures, the Integrated Measurement Interface Box can also double as a stand-alone and portable digital multimeter. The measured values are shown on the display screen. It is possible to measure voltage, current, pressure and resistance. Temperature and freguency, however, can only be measured as part of diagnostics, i.e. in the procedures of the Integrated Service Technical Application. Measured values are not displayed on the display screen if the Integrated Measurement Interface Box is being controlled by the Integrated Service Technical Application. The results are displayed in the Integrated Service Technical Application under "Measuring eguipment". Registration and configuration (e.g. of the display language) is carried out using the Workshop System Management. Software updates are similarly managed using the Workshop System Management and are implemented automatically when necessary. Other important features include: • Hard drive capacity: 20 GB • RAM: 512 MB • Rechargeable battery life: Up to 3 hours • Connection to workshop network by: - Cable - Wireless 6 IMIB The Integrated Measurement Interface Box also has a USB interface, which will be used for vehicle diagnostics in the future. Using the Integrated Measurement Interface Box inside a vehicle Index Explanation 1 ICOM A 2 V adapter cable 3 Measurement box 4 Integrated Measurement Interface Box 7 IMIB Measuring Devices The measuring devices (Multimeter, Oscilloscope, Signals) are component parts of the ISTA workshop system. The corresponding measuring devices hardware, as well as the periodic measurement data logging, preparation of information, and provision of the results, are all performed by the IMIB connected via LAN. How to start the measuring devices: • Call up the measuring devices via the "Activities" -> "Measuring devices" selection in the navigation area. • Choose the "Measuring devices" tab. The "Connection manager" mask appears. • Select the desired IMIB and click the "Set up connection" button. The "Measuring devices" tab will then appear with the preset "Multimeter" preset tab. Integrated Service Technical Application IS \Zi 'ooj [F. ? [xl\ x\ Vfc VA20OD8 Vehicle 3769O/SALO20drtyU7iT2lAU7«UR LL/2004/11 Identification Vehicle test Activities Service olan Information Guided Service Workshop 1 Measuring search troubleshooting function Operating fluids devices Level 1 Selected structure elements Messgerite 8 IMIB "Measuring devices" tab integrated Service Technical Application VIN VA2O0O8 ® 0 @ 0 SO Eli '?l M x Vehicle: 3 , /E90fSAU320d/M47fT2/AUTiEUR LU23M/11 Connection manager ? X "Connection manager" mask Switching to Another Tab When switching between the measuring devices tabs, the most recently made setting will be retained. 9 IMIB Multimeter The "Multimeter" tab contains display and control elements for two multimeters that are separately displayed in the content range, divided by a green line. Besides individual measurements, the devices also support parallel measurement via Probe 1 and Probe 2 for resistance, direct/alternating voltage, direct/alternating current, as well as the diode test. Furthermore, parallel measurements with Probe 1 or 2, as well as a sensor (kV clip/RZV cable [resting voltage cable], clip-on ammeter, pressure sensor, or temperature sensor), are possible. Each multimeter consists of a display area (left) and a settings area (right). With the "Quit measuring devices" button in the action line, you can return to the "Measuring devices" tab. lrr»grat»d S*r/lc# Technical Appl ration s 4 j] / 1 ■ [T &| ^1 Ffisr-Nr DA5f723 rah' ..i 3«r7E9C1JM/330. J SS2/EUR LL .'2005.06 KV-fJp R7VK*b«t S i.nMi. 9 r MM / MAX Siandbild a ||acv|Q|]|aca OCA •*+ Rang*: ■*• | [ )iv ]H MttcgtrSt* !>*Mid«n "Multimeter" mask 10 IMIB Display Range The display area shows the measured value with its physical unit of measurement high¬ lighted in color. The measured values of Multimeter 1 (connected with Probe 1 by default) are displayed in green; Multimeter 2 (connected with probe 2 by default) displays mea¬ sured values in red. Under the display area, there are two buttons with the following functions: 0 MIN/MAX: If you click this button, the two limit values are shown at the bottom left of the display window. "MIN" corresponds to the lowest value in the period of measurement, e.g. "Imin = 6 A". "MAX" shows the highest value, e.g. "Imax = 7 A". 0 Freeze-frame: This function "freezes" the measurement; the last measurement is thus retained. You can also trigger the freeze-frame function at the probe and then read the value at the tester. If you click the button a second time, the measured values continue to be displayed. Range The setting range is located at the bottom right of the mask, divided into an area for Multimeter 1 (top) and Multimeter 2 (bottom). At the top, there are six buttons for select¬ ing a measurement source (probes and sensors). Under these are the "Mode" zones for setting the measurement type and "Range" for setting the measurement range. Source (measurement source) The following measurement sources are used: • Probe 1: for resistors, direct/alternating voltage, direct/alternating current, diode tests. • Probe 2: for resistors, direct/alternating voltage, direct/alternating current, diode tests. • kV clip/RZV cable: for high voltage measurements in ignition systems. • Clip-on ammeter: for direct and alternating current. • Pressure sensor: for pressure measurements, e.g. cylinder 1 compression. • Temperature sensor: for temperature measurements in liquids, e.g. oil temperature. After the source has been selected, the button will be displayed in the color of the mask. 11 IMIB Mode The possible settings change according to the selected source. After selection of a mode, e.g. "DC V", it is highlighted in the color of the mask. The abbreviations are defined below: • Q : Resistor measurement • AC V: Alternating voltage measurement • DC V: Direct voltage measurement • AC A: Alternating current measurement • DC A: Direct current measurement • -w- : Diode test Range The range changes according to the source. The measuring device will automatically be set to the highest measurement range by default; however, you can manually adjust it if reguired. Note: If the displayed measurement value lies outside the manually selected range, the display changes to "++++" or "- 12 IMIB Using the Multimeter How to perform a resistor measurement with Multimeter 1: • Select the source "Probe 1 • Select the "Q" mode. • Connect the DSO cable 1 to the IMIB. • Connect the probes to the resistance. • Perform the measurement. How to perform measurements on two signals simultaneously, so that you can measure battery voltage and current, for example: • Select the source "Clip-on ammeter" on Multimeter 2. • Select the "DC A" mode on Multimeter 2. • Select the range matching the selected clip-on ammeter on Multimeter 2. • Select the source "Probe 1" on Multimeter 1. • Select the "DC V" mode at Multimeter 1. • Connect the clip-on ammeter to the IMIB. • Connect the clip-on ammeter to the vehicle's minus lead. • Connect the DSO cable 1 to the IMIB. • Connect the probes to the battery poles. • Click the button on the probe to freeze the measurement. • Evaluate the measurement. 13 IMIB Oscilloscope Two time-dependent variables are measured with the dual channel oscilloscope. The screen displays measured and processed curves and results in the left (display) area. The IMIB settings can be adjusted in the right (setting) area. "Oscilloscope" tab Display Area The display area is divided into the following: • Graph display: for graphical plots of curves. • Measured value display: for numerical display of voltage and time values. 14 IMIB Graph Display With linear scaling, the graph display is divided into a 10 x 8 grid. With logarithmic scaling, the y-axis is divided into 4 groups of 10; the x-axis remains unchanged. Graph display m Differential cursor Depending on the application, a trigger mark, two cursors and a progress bar on the top edge will appear in the graph plot. So that you can distinguish between curves and correctly assign their settings, the curve from Channel 1 (CHI) is green and the curve from Channel 2 (CH2) is red. Cursors, trig¬ ger marks and progress bars are white. The frequency of graph updates depends on the sampling rate set on the oscilloscope. The following presets apply for individual areas: • Sampling rate < 100 s: Time interval 10 ms. • 100 s < sampling rate < 1 s: Time interval 300 ms. • Sampling rate > 1 s: Record mode (Record). The curve progresses in linear steps of approx. 4 pixels from right to left and is recorded at the same time. 15 IMIB Measured Value Display Below the graph display, there is a display consisting of 3 columns for numerical values and status messages. Rat Cur 10.0 mV 1 1 me Trigg ar: Aiit« D Iff. CUf 10.0 ItlV in MOHs ACur 30.0 mV t/T 50% At IEtis Measured value display The meaning of the displays is described in the following chapter. Range The controls for setting the oscilloscope are located on the right-hand side of the mask. The controls are arranged in five settings: • Cursor (exclusively arrow keys for reference and difference) • Display • Time • Channel (channels CHI and CH2) • Trigger Cursor Referenz Cifferenz OH mi fauplrd Display Loq Record Lomproee Source Stromranqo I Offset TO* VfDiv SO ▼ Coupling CNJ DC Source Drudacnsoi H Offset TO EE VfDiv 31) E Coupling CUD AC El HE H Time | Position < so* H ms/DIv M in E Trigger Source Stromzartqo * W I Position * 18 S - Level h SO % j ▼ Slop e pus 1 ,Mf9 1 Mode Horm Si'Kile 16 IMIB Range Cursor and Display Settings Cursor Referenz Differenz nn | ni2 Cauplrd L Z\> F [► Display Loij Mcconi Lomproee Tim* Position 4 60 % ► ms/Div 4 ?n ► Trigger The "Cursor" settings group contains the following buttons: 0 CHI, CH2: When clicking and locking a button, the two cursors will appear in the sec¬ ond and eighth grid line of the graph display for the respective curve (reference and dif¬ ference). The cursors can only be displayed for one channel respectively: For example, if you lock the "CH2" button, then the "CHI" button will be simultaneously unlocked. If you click the same button once more, the measuring cursors will be faded out again. You can move the reference cursor along the x-axis with the two reference arrow keys and the dif¬ ferential cursor by using the differential arrow keys. The cursors move pixel by pixel; their speed increases the longer you hold the arrow key down. As soon as a cursor reaches the edge of a measurement curve, the respective arrow key can no longer be operated. 0 Coupled: is activated only if one of the "CHI" or "CH2" buttons, is active. If the "Coupled" button is locked, then the differential cursor moves when the differential cursor is displaced, maintaining constant spacing. With the differential arrow keys, you can con¬ tinue to displace the differential cursor separately. If you hide the cursor for one channel and later show it again (cursor key locked), the "Coupled" button adopts the most recent¬ ly displayed state. 17 IMIB The following applications are linked with the cursor function: • Measuring curves: The oscilloscope determines the following points and shows the values in the measured value display: • Intersection of reference cursor with the curve ("Ref.Cur") • Interface of differential cursor with the curve ("Diff.Cur") • Voltage difference between the reference and differential cursor ("Cur") • Output of Set values: When you select the "CHI" or "CH2" button in the cursor settings group The following countervalues are entered into the measured value display: • Period ("t") • Freguency ("1/t") • Sample ratio of selected channel ("t/T") • Time lag between reference and differential cursor ("t"). • Zooming compresses the curves. In compressed mode, you can select and zoom in on a curve section. Cursor □1? Coupled Display .oq Mccord Com prose Referem Differert2 l« ►JM b Time Position ◄ 50 N ► ms/DIv < ?n ► Trigger Source 1 So urc e Stromranqo Oiudacnsor a Offset a a a Offset TO* 1 VIDiv VfDiv | \ 50 b -| |-l | Coupling Coupling UNO AC || 1XJ | UNI) AC Source Mromz j-tqo Position 10 * ▼ Level 50 * W Slope |ms | neg Mode Norm Sinqlc 18 IMIB The "Display" settings group contains the following buttons: 0 Log: logarithmic scaling on/off, as default y-values are presented in linear fashion. When clicking and locking the "Log" button , the y-axis switches to logarithmic scaling in value ranges up to 4 groups of 10. Negative measurements are zeroed in the logarithmic dis¬ play. Clicking the button a second time switches back to linear scaling. 0 Record: record mode on/off. When clicking and locking the "Record" button, the record mode will be started. The process can be interrupted by once again clicking on the "Record" button. The record mode is automatically stopped in the "Single" trigger mode if a trigger event occurs (trigger level, ramp). All settings for the "Channel", "Time" and "Trigger" groups are locked. The record mode is only accessible if the "Compress" but¬ ton is not locked. 0 Compress: scales the x-axis over the entire curve. When clicking and locking the "Compress" button, the x-axis is scaled so that the entire and most recently recorded curve can be shown in the measured graph display. The "Record" button and those for the trigger mode (Auto, Normal, Single) are deactivated. The "Compress" button can only be clicked after a curve has been recorded. Mark a section of the compressed curve (either Channel 1 or 2) with the reference and differential cursor. Click the "Compress" button. The oscilloscope zooms in on the marked curve section to the normal scaling of the x-axis. Cursor on 012 Couplral Display Log Mccord Lomproec Referem Differenz rammer T ime Position ◄ ms/DIv ?n lugger Source Stroinranqa Offset tO* YfDiv 50 ▼ Coupling CN'J DC Source U nicksensor El Offset E A VfDiv Ei 311 A Coupling CWL) — AC Source Mrorrua-rqo Position 10 % Level 50 * Slope_ giiis neg Mode Worm Si'tqlc 19 IMIB By increasing the sampling rate with the "