AVL F-FEM-DAC User manual

F-FEM-DAC
Operating Manual
User’s Guide
August 2003
ID Number: AT1085E
Rev. 04

The contents of this document may not be reproduced in any form
or communicated to any third party without the prior written
consent of AVL. While every effort is made to ensure its correctness,
AVL assumes no responsibility for errors or omissions which may
occur in this document or for damage caused by them.
All mentioned trademarks or registered trademarks are owned by
their respective owners.
Printed in Austria at AVL All rights reserved
Copyright 2003 by AVL List GmbH, Graz - Austria

F-FEM-DAC
F-FEM-DACF-FEM-DAC
F-FEM-DAC
Operating Manual
1
WARNING! WARNING! WARNING!
This manual contains important warnings and safety instructions that must be observed by the user.
The product described is intended only for the type of application which is described in the instructions. The
manual also explains the essential prerequisites for the application and operation of the product as well as
the safety measures to ensure smooth operation. AVL can offer no warranty nor accept any liability if the
product is used in applications other than those described or if the necessary prerequisites and safety
measures are not met.
The product may only be operated and used by qualified personnel capable of observing the required safety
measures. All accessories and equipment used with the product must be supplied or approved by AVL. The
operating principle of this product is such that the accuracy of the measurement results depends not only on
the correct operation and functioning of the product, but also on a variety of peripheral conditions beyond
the control of the manufacturer. The results obtained from this product therefore must be examined by an
expert (e. g. for plausibility) before any action is taken based on those results.
All adjustment and maintenance work necessary on instruments when open and under voltage must be
carried out by a professional technician who is aware of the dangers.
Repairs to the product may be carried out by the manufacturer or qualified service personnel only.
When the product is in use, an expert must ensure that neither the test object nor the testing equipment is
operated under conditions that may lead to damage or injury.
AVL LIST GmbH
WARNING:
Connected devices with voltages higher than 50 V AC or 75 V DC
must comply with the 73/23/ EEC Low Voltage Directive.
WARNING:
Only shielded cables may be used with appropriately shielded
connectors in order to comply with the 89/336/EEC Electromagnetic
Compatibility Directive. Mains connections with standardized connec-
tors and the exceptions mentioned do not have to be shielded.
WARNING:
Do not use this device in an environment where there is a danger of
explosion.
Note the device's degree of protection.
The device may only be opened by qualified staff.
WARNING:
If a foreign body or liquid gets inside the device, disconnect it from the
mains and have an expert check it before using it again.
WARNING:
Make sure that the device is supplied with the correct supply voltage
and safe mains isolation of the supply voltage is guaranteed.

http://www.avl.com
2

Inhaltsverzeichnis 1
F-FEM-DAC
F-FEM-DACF-FEM-DAC
F-FEM-DAC
Operating Manual
Inhaltsverzeichnis
1Preface
1.1 General Information About the F-FEM-DAC.................3
1.2 Use and Contents of this Manual.................................. 4
1.3 System Environment......................................................5
1.4 Data Transfer between Test Bed and PUMA Open
System............................................................................. 6
1.5 Typographic Conventions .............................................6
1.6 Online Help......................................................................7
1.7 We Want To Hear From You .......................................... 7
2 General
2.1 Basic Information ........................................................... 9
2.2 Performance Data...........................................................9
2.3 Cascading .....................................................................10
2.4 F-FEM-DAC Block Diagram .........................................11
3Installation
3.1 Hardware Installation ...................................................13
3.1.1 Unpacking .................................................................. 13
3.1.2 Scope of Supply......................................................... 13
3.1.3 Preconditions ............................................................. 13
3.1.4 Fixing the Module at the DIN Rail .............................. 14
3.1.5 External Dimensions .................................................. 15
3.1.6 Establishing Connections........................................... 16
3.1.7 Troubleshooting ......................................................... 16
3.2 Software Installation ....................................................16
3.3 Grounding and Shielding.............................................17
3.3.1 Grounding .................................................................. 17
3.3.2 Shielding .................................................................... 22
4 Operation
4.1 Analog Outputs.............................................................23
4.1.1 General ...................................................................... 23
4.1.2 Block Diagram............................................................ 23
4.1.3 Specifications............................................................. 24
4.2 Frequency Outputs.......................................................26
4.2.1 Block Diagram............................................................ 26
4.2.2 Description of Modes ................................................. 27
4.2.3 Accuracy of the Frequency Synthesis........................ 30
4.2.4 Specifications............................................................. 32
4.3 Seven-Segment Display...............................................33
4.4 Aging and Calibration Intervals ..................................33
4.4.1 General ...................................................................... 33
4.4.2 Procedure .................................................................. 34

Inhaltsverzeichnis
2
http://www.avl.com
4.5 Pin assignment .............................................................35
4.5.1 Location of Plug Connections .................................... 35
4.5.2 Analog Outputs: X5 ... X8 .......................................... 36
4.5.3 Frequency Outputs: X15, X16.................................... 37
4.5.4 Power Supply Connection: X11 ................................. 38
4.5.5 Add-on Connection: X24, X25 ................................... 39
4.5.6 Debug/JTAG Connection: X27................................... 40
4.5.7 IEEE1394 Network: X21 ... X23................................. 41
4.6 Cables............................................................................42
4.6.1 Power Feed Cable ..................................................... 42
4.6.2 IEEE1394 Cable ........................................................ 42
4.6.3 Add-on Cable ............................................................. 42
5 Options
5.1 Repeater ........................................................................43
5.2 Fiber Optic Link Converter ..........................................44
5.3 F-FEM-DIO .....................................................................44
6 Technical Data
6.1 Data................................................................................45
6.2 CE Compliance .............................................................45
7 Glossary

General Information About the F-FEM-DAC
F-FEM-DAC
F-FEM-DACF-FEM-DAC
F-FEM-DAC
Operating Manual
3
1Preface
1.1 General Information About the F-FEM-DAC
The F-FEM-DAC (Fast Front End Module Digital Analog Converter) is
part of a family of Front End Modules that operate together in a
network. This F-FEM belongs to a new generation of devices for which
real time data communication is ensured in the PUMA Open system. It
is used to output analog quantities and frequencies.
Compatibility FEMs Classic (older generation) and F-FEMs (new generation) can be
operated parallel to each other in the PUMA Open system.
Purpose of the
F-FEM-DAC
The F-FEM-DAC is used for the output of analog signals and has an
interface for connection to an F-FEM-DIO. The signals can be
transferred directly to/from the PUMA test bed computer or via another
type of F-FEM module (e.g. F-FEM-CON).
F-FEMs and
PUMA Open
Up to 62 F-FEMs can be used with PUMA Open. The total sampling
rate for all connected F-FEMs is 64 kHz.
Channels Each F-FEM-DAC is equipped with 4 analog output channels and 2
frequency output channels.
Fig. 1 F-FEM-DAC

http://www.avl.com
Use and Contents of this Manual
4
1.2 Use and Contents of this Manual
This manual deals with the I/O component F-FEM-DAC in the PUMA
Open system. It describes the hardware (pin assignment, power
supply, etc.) and the software (function in the PUMA Open system,
etc.).
The information in this documentation is meant to be a source of
reference when working with F-FEM-DACs in the PUMA Open system
or an automation system from another manufacturer at the test bed.
This documentation has been written for commissioning engineers,
test bed administrators and test bed operators. It provides support
during installation and is a source of reference when working at the test
bed. Basic knowledge of the following subjects is required:
nElectrical engineering
nTest bed layout and operation
nAutomatic control engineering
nFunctioning of various sensors and actuators
nPUMA Open system
Naming F-FEM-DAC: Fast Front End Modul Digital Analog Converter
Important: Only authorized AVL commissioning engineers may install
and commission F-FEMs!
Important: This documentation does not and cannot replace
adequate training!

System Environment
F-FEM-DAC
F-FEM-DACF-FEM-DAC
F-FEM-DAC
Operating Manual
5
1.3 System Environment
The figure below outlines schematically how F-FEMs are integrated
with the PUMA Open test bed system.
Fig. 2 Example of a system environment
1Test bed PC (on which the PUMA Open system has been
installed)
2Engine test bed (engine, dyno)
3F-FEM-AIF, directly connected to the PUMA Open system
4F-FEM-CON, directly connected to the PUMA Open system
5F-FEM-DIO, connected to the PUMA Open system via
F-FEM-CON
6F-FEM-AIN or F-FEM-AIS (electrically isolated), connected
to the PUMA Open system via F-FEM-CON
7FEM P, connected to the PUMA Open system via
F-FEM-AIN or F-FEM-AIS
1
3
4
5
2
6
7

http://www.avl.com
Data Transfer between Test Bed and PUMA Open System
6
1.4 Data Transfer between Test Bed and PUMA
Open System
At the PUMA Open system, demand values are calculated and trans-
ferred to the output modules. At the F-FEM-DAC, the digital demand
values are converted into analog quantities (current/voltage) again,
e.g. to control a throttle actuator.
1.5 Typographic Conventions
This document uses a number of icons, text styles and typefaces to
distinguish between the various types of information found within the
text.
Fig. 3 Data transfer between test bed and PUMA Open system
1PUMA Open PC
2IEEE 1394 PC board PCI, via which all signals of the F-FEM
modules are transferred to/from the PUMA Open system.
3F-FEM-DAC – digital-to-analog conversion and output of the
demand values
4Engine test bed – analog signals (speed, torque, etc.) are
output using actuators fixed at/in the engine.
1
2
3
4
Note: This symbol introduces a tip concerning the current topic (e.g.
faster ways of accomplishing certain procedures) or a reference to
further information, other manuals, Internet addresses, etc.
Important: This box includes very important information without
which you would be at a severe disadvantage.
WARNING: Text introduced by this symbol warns of actions or situa-
tions that could potentially lead to personal injury, hardware damage
or significant data loss.

Online Help
F-FEM-DAC
F-FEM-DACF-FEM-DAC
F-FEM-DAC
Operating Manual
7
1.6 Online Help
This printed manual is also available as online Help.
The online Help provides you quickly with on-screen information about
the relevant topic so that you do not have to turn away from your
screen.
To access the PUMA Help system, click the Start button on the taskbar
and point to Programs. Within the Programs folder, point to the folder
that contains your PUMA applications. Now click the PUMA
Documentation icon. The PUMA Options subfolder contains the
online documentation for this manual.
Within the PAM and POI applications, use the Help menu to access
the Help system. The tabs in the Help window (Contents, Index, Find)
allow you to move quickly within the help system.
To obtain context-sensitive information about a given topic, hit F1.
1.7 We Want To Hear From You
AVL continually strives to improve its documentation and, with this
thought in mind, we would like to hear what you have to say about it.
Whether you want to suggest an improvement to a particular manual,
complain that a concept is not explained well enough or point out an
error, we want to know.
To this end, we have created the following e-mail address:
[email protected]
We look forward to hearing from you!
Example: The gray example box describes an example.
Bold New terms and important text both appear in this
typeface. (E.g.: Do not delete file!)
Italics This document uses italicized text wherever you
are required to type user-dependent information.
For example, if this document writes macro name,
then you are required to type the name of a macro.
UPPERCASE
LETTERS
Key presses and system states both appear as
uppercase letters.
Courier
Text as it appears on-screen is indicated by this
font (e.g. messages, commands, file names, ...).
Menu |
Option
This symbol means that you should select the
menu item (here called Option) found in the menu
(her called Menu).

http://www.avl.com
We Want To Hear From You
8

Basic Information
F-FEM-DAC
F-FEM-DACF-FEM-DAC
F-FEM-DAC
Operating Manua
9
2General
2.1 Basic Information
The main application of the Fast Front End Modules is in the area of
engine test beds, as well as in all types of vehicle testing.
To meet the growing demands of modern data acquisition, systems
have been designed which acquire the data directly where they are
measured and which output process data where they are needed.
For example, the actuators can be connected directly to the
F-FEM-DAC.
The device has four analog channels which are electrically isolated
from each other and from the processor unit. Each analog output
channel can be used either as voltage output or current output.
Furthermore, two frequencies can be output, which are independent of
each other and which correspond to an analog value (PWM) (with
PUMA Open V1.2 and higher!). Both frequency outputs can be used as
signal splitter substitutes or as numerically generated frequency
F-OUT (e.g. output of distance pulses to an engine electronic system).
The following possibilities exist:
nGeneration of an RS422-compatible two-track signal with zero
track of an active dyno. (Differential signals U0+, U1+, U2+),
substitute for signal splitter.
nOne freely programmable push-pull output each for FOUT1 and
FOUT2.
2.2 Performance Data
n3 interfaces for IEEE1394
Analog outputs:
n4 electrically isolated channels
n16 bit resolution; 0.005 % error (typical)
n+ 11 V and + 22 mA per channel
nAdjustment coefficients in the EEPROM
nSynchronization in the F-FEM network via a VCXO
Frequency outputs (not with PUMA Open V1.1!):
n2 electrically isolated outputs
nGeneration of 2-track and zero-track signals
nRS422-compatible output signals
nConnection of 2 F-FEM-DIO modules with 16 digital inputs and 16
digital outputs each

http://www.avl.com
Cascading
10
2.3 Cascading
The F-FEM-DAC is part of a family of Front End Modules that operate
together on a network. An interface up to 400 MBaud IEEE1394 is
used to connect them for data transmission. The other members of this
group are:
As the FEM-P has a RS485 interface, it is an exception within this
group. It is operated as a submodule of an F-FEM-AIN. The
F-FEM-DIO is connected to other types of F-FEMs via a serial inter-
face.
Several F-FEM modules can be connected to a measurement system
via the IEEE1394 interface. 62 IEEE1394 nodes can be addressed in
such an F-FEM network. However, there are the following restrictions:
The total sampling rate is limited by the interface to the host system
(e.g. PUMA Open with 64 k samples). All other F-FEMs in the network
which require node addresses as well as communication bandwidth
(e.g.F-FEM-DAC, F-FEM-CON or F-FEM-AIF) have to be figured into
the calculation as well.
F-FEM-CNT for counter input
F-FEM-AIF for analog measurement
F-FEM-AIS for analog measurement with electrical isolation
F-FEM-AIN for analog measurement without electrical isolation
F-FEM-CON for controller
F-FEM-DIO for digital I/O
FEM-P for pressure measurement

F-FEM-DAC Block Diagram
F-FEM-DAC
F-FEM-DACF-FEM-DAC
F-FEM-DAC
Operating Manua
11
2.4 F-FEM-DAC Block Diagram
Fig. 4 F-FEM-DAC block diagram

http://www.avl.com
F-FEM-DAC Block Diagram
12

Hardware Installation
F-FEM-DAC
F-FEM-DACF-FEM-DAC
F-FEM-DAC
Operating Manual
13
3 Installation
3.1 Hardware Installation
3.1.1 Unpacking
Normally, the F-FEM-DAC is delivered in a cabinet with the wiring
already done. Component parts must only be exchanged in the case of
replacements or system extensions.
3.1.2 Scope of Supply
nF-FEM-DAC device
nConnector set for all I/O connections
– P-SUB socket with case for 24 V supply
– 6 x D-SUB connector with housing for the wiring of the
analog inputs and frequency outputs
nTest and calibration protocol with the measured accuracies of all
output channels (The serial number on the protocol must
correspond with the serial number on the type plate on the
device).
nTest certificate
3.1.3 Preconditions
The F-FEM-DAC can be used with PUMA Open or with automation
systems from other manufacturers. FEMs Classic (older generation of
FEMs) and F-FEMs (new generation) can be operated parallel to each
other in the PUMA Open system.
A space of 55 mm x 264 mm2is required on the mounting panel. The
mounting depth is 180 mm. With the plugs connected it is 245 mm.
The FEM-DAC has been designed for top hat rail mounting (DIN rail;
TS35 according to DIN EN 50022). For mounting/dismounting, you
need a screw driver size 6.
Important: Please check the contents with the items as indicated
under "Scope of Supply".

http://www.avl.com
Hardware Installation
14
3.1.4 Fixing the Module at the DIN Rail
Fig. 5 Fixing the Module at the DIN Rail
1
2
3
Important: When mounting the device in a cabinet, make sure not to
cover the vents to allow sufficient air to circulate. The minimum
distance between cable duct and upper side or lower side of the
module should not be less than 40 mm.

Hardware Installation
F-FEM-DAC
F-FEM-DACF-FEM-DAC
F-FEM-DAC
Operating Manual
15
3.1.5 External Dimensions
Fig. 6 F-FEM-DAC, external dimensions

http://www.avl.com
Software Installation
16
3.1.6 Establishing Connections
To work with the device, connections at the following connectors must
be established:
nIEEE1394 (at least 1 cable at X21, X22 or X23)
n24 V supply at X11
nF-Out, Analog Out (at least 1 cable at X5, 6, 7, 8 or X15, 16, resp.)
nADD ON (at X24 or X25, if required)
The pin assignment needs to be checked. For details, please refer to
the test bed circuit diagram.
3.1.7 Troubleshooting
If the power supply has been switched on and the pin assignment is
correct, a figure or 2 strokes appear on the seven-segment display on
the front side of the F-FEM-DAC. If this is not the case, check all steps
of the installation.
3.2 Software Installation
The on-board software has already been installed.
The on-board software necessary for operation can be loaded by the
automation system during the initialization phase (please see the
relevant documents).
WARNING:
Do not open the closed module case! There are no parts in the interior
of the device that need to be exchanged. Warranty claims can no
longer be asserted if the housing is opened.