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ZMD31015
User Manual
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ZMD ZMD31015 User Manual

ZMD31015
RBic
Development Kit Documentation
Low-Cost Sensor Signal Conditioner with Diagnostics
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ZMD31015 RBic
™ Sensor Signal Conditioner
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Development Kit Documentation
Restrictions:
The ZMD AG RBic laboratory setup and module development only.
™ Development Kit hardware and software are designed for RBic
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™ evaluation,
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The ZMD AG RBic production test setups. ZMD AG shall not be liable for any damages arising out of defects resulting from (i) delivered hard and software (ii) non-observance of instructions contained in this manual, or (iii) misuse, abuse, use under abnormal conditions or alteration by anyone other than ZMD AG. To the extent permitted by law ZMD AG hereby expressly disclaims and User expressly waives any and all warranties, whether express, implied or statutory, including, without limitation, implied warranties of merchantability and of fitness for a particular purpose, statutory warranty of non-infringement and any other warranty that may arise by reason of
usage of trade, custom or course of dealing.
Development Kit, Rev. 0.3, September 20, 2006 Page 1 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
™ Development Kit hardware and software must not be used for module production and
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ZMD31015
RBic
Development Kit Documentation
Contents
1 KIT CONTENTS......................................................................................................................................................................................4
2 USB DRIVER INSTALLATION ...............................................................................................................................................................5
3 DEVELOPMENT BOARD .......................................................................................................................................................................8
4 RBIC
Low-Cost Sensor Signal Conditioner with Diagnostics
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SYSTEM REQUIREMENTS ..................................................................................................................................................................5
INSTALLATION FOR WINDOWS XP PRO OR XP HOME OPERATING SYSTEMS ..........................................................................5
Installing the Basic USB Driver...........................................................................................................................................................5
Installing the Virtual Com Port USB Driver.........................................................................................................................................6
Checking USB Port Operation............................................................................................................................................................7
OVERVIEW............................................................................................................................................................................................8
3.1 INSTALLING THE COMMUNICATIONS AND CALIBRATION SOFTWARE...........................................................................8
TM
CONNECTIONS TO RBIC
POWER SUPPLY TO THE BOARD ......................................................................................................................................................9
3.2 RESET SWITCH ......................................................................................................................................................................9
ON-BOARD ANALOG-TO-DIGITAL CONVERTER (ADC) ...................................................................................................................9
ARTIFICIAL BRIDGE STIMULUS..........................................................................................................................................................9
WHAT ARE THE JUMPERS FOR? .....................................................................................................................................................10
REMOTE BOARD................................................................................................................................................................................10
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TESTER SOFTWARE ....................................................................................................................................................... 12
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OVERVIEW..........................................................................................................................................................................................12
COM1/COM2/COM3/COM4 Radio Button and Status Windows .....................................................................................................12
Bridge and Temperature Display......................................................................................................................................................13
Data Logging Section .......................................................................................................................................................................13
ZACwire™ Baud Rate ......................................................................................................................................................................13
EEPROM Section.............................................................................................................................................................................13
Command Interface Section.............................................................................................................................................................13
Response Field.................................................................................................................................................................................13
Command/Subcommand/Data Fields...............................................................................................................................................13
Send Button......................................................................................................................................................................................14
Start NOM Button .............................................................................................................................................................................14
Start RM Button................................................................................................................................................................................14
Get Analog Function.........................................................................................................................................................................14
Artificial Bridge Input Control............................................................................................................................................................14
Avg samples (Average Samples) .....................................................................................................................................................14
Output Mode Section........................................................................................................................................................................15
Adjustment of the Analog Pre-Amp Gain and the Analog ADC Offset Modes .................................................................................15
Calibration Button.............................................................................................................................................................................16
CALIBRATION SEQUENCE................................................................................................................................................................17
...........................................................................................................................................................9
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Development Kit, Rev. 0.3, September 20, 2006 Page 2 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
5 DRY RUN CALIBRATION.....................................................................................................................................................................23
6 EEPROM BITS .....................................................................................................................................................................................24
7 FREQUENTLY ASKED QUESTIONS AND KNOWN DEVELOPMENT KIT PROBLEMS ...................................................................28
8 RELATED DOCUMENTS .....................................................................................................................................................................29
APPENDIX A: SCHEMATIC RBIC
APPENDIX B: RBIC
1 PROTOCOL..........................................................................................................................................................................................31
2 SUMMARY TABLE OF COMMANDS (LEAD BYTES) TO THE LCB/ZMD31010DK (FIRMWARE REV.3.1 OR HIGHER) ................31
3 SUMMARY TABLE OF PREPENDED BYTES FROM LCB/ ZMD31010DK (FIRMWARE REV.3.1 OR HIGHER) TO HOST PC.......33
4 DETAILS OF EEP_FIELD (RBICDLITETM (ZMD 31015) NOT RBICLITETM (ZMD 31010)) COMMAND:.........................................34
5 DETAILS OF GET_RAW COMMAND: .................................................................................................................................................36
APPENDIX C: CALIBRATING THE ON BOARD A2D..................................................................................................................................37
1 A2D SPECIFICATIONS: .......................................................................................................................................................................37
2 HARDWARE/FIRMWARE REQUIREMENTS ......................................................................................................................................37
3 STEPS TO CALIBRATE THE 31010DK A2D. ......................................................................................................................................38
APPENDIX D: DRIVER INSTALLATION ON WINDOWS 2000 OPERATING SYSTEMS ...........................................................................39
Low-Cost Sensor Signal Conditioner with Diagnostics
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Step 1 – Assigning a Unique Identification (ASIC ID Section)..........................................................................................................18
Step 2 – Data Collection...................................................................................................................................................................18
Step 3 Calculate & Write Coefficients...............................................................................................................................................19
Save/Restore Button.........................................................................................................................................................................19
==> Button........................................................................................................................................................................................20
<== Button........................................................................................................................................................................................20
Current EEPROM Settings Section..................................................................................................................................................21
Read Button......................................................................................................................................................................................21
Write Button......................................................................................................................................................................................21
Stored Settings Section....................................................................................................................................................................21
EEPROM Fields................................................................................................................................................................................21
Save # Field......................................................................................................................................................................................21
Save Button......................................................................................................................................................................................21
Delete Button....................................................................................................................................................................................21
X128 Board Support Section............................................................................................................................................................21
# ICs Field and Set Button................................................................................................................................................................21
Current IC Field and Select Button...................................................................................................................................................22
Save All Button.................................................................................................................................................................................22
Write All Button.................................................................................................................................................................................22
STEPS TO THE DRY RUN CALIBRATION.........................................................................................................................................23
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DEVELOPMENT BOARD /REMOTE BOARD ..............................................................................30
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TESTER PROTOCOL ........................................................................................................................................31
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Development Kit, Rev. 0.3, September 20, 2006 Page 3 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
Low-Cost Sensor Signal Conditioner with Diagnostics
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1 Kit Contents
a) CD ROM of the RBic
b) RBic
c) RBic
TM
Development Board (Translator Board)
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TM
Remote Board
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d) USB Cable
e) 7ft RJ-11 (4-conductor phone line) cable
Remote
Board
TM
(Tester/Calibration) Software
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Development
Board
TM
Development Kit
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The RBic
TM
Development Kit contains the software and hardware needed for communication and
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calibration of an RBic
Figure 1.1 – RBic
TM
sensor signal conditioning IC. A PC can communicate with the Development Board
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(also referred to as the “Translator Board”) via a USB connection. The software should run on any Windows 98/ME/XP/NT system after the installation of an USB driver.
Development Kit, Rev. 0.3, September 20, 2006 Page 4 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
2 USB Driver Installation
System Requirements
The USB version of the ZMD31015 RBic required driver files are in the “USB_Driver” folder on the Development Kit CD-ROM.
These two drivers will make your USB port appear as a virtual com port (typically COM3 or COM4 on most computers). The software provided with the Development Kit accesses the Development Board as if it were a COM (RS232) port. These drivers will in no way affect the operation of any other USB peripherals.
Low-Cost Sensor Signal Conditioner with Diagnostics
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• 5x86-compatible PC
• 32 MB RAM
• Hard drive with 20MB free space
• USB port
• Microsoft W98/ME/2000/XP
TM
Development Kit requires installation of two drivers. All the
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Driver installation is very similar for Windows XP or Windows 2000 installations; however, there are slight differences in the appearance of the dialog boxes. The steps for the Windows 2000 installation (given in the Appendix A in this document) are similar to the following XP installation.
Installation for Windows XP Pro or XP Home Operating Systems
Installing the Basic USB Driver
Important: System administrator rights are required to install the USB driver on your PC.
Use the USB cable to connect the Development Board to an available USB port on your PC. The “Found New Hardware” wizard launches and brings up the following dialog box. Complete the following steps.
Step 1: Select “No, not this time,” and click “Next.”
Development Kit, Rev. 0.3, September 20, 2006 Page 5 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
Step 2: Select “Install from a list or specific location (Advanced).” Click “Next.”
ZMD31015
RBic
Development Kit Documentation
Low-Cost Sensor Signal Conditioner with Diagnostics
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Step 3: Select “Search removable media (floppy, CD-ROM),” and click “Next.”
Step 4: When the warning about failing logo testing appears, click “Continue Anyway” because this concern is not applicable.
Step 5: Finish the driver installation by clicking “Finish.”
Installing the Virtual Com Port USB Driver
The second required USB driver causes the USB device to appear to the system as a virtual COM port.
Follow the same steps as outlined under Installing the Basic USB Driver above to complete this second driver
installation.
Development Kit, Rev. 0.3, September 20, 2006 Page 6 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
Low-Cost Sensor Signal Conditioner with Diagnostics
dLite
Checking USB Port Operation
Verify that the new hardware is operating properly before continuing. Access the control panel by clicking Start Î Settings Î Control Panel. Double click the “System” icon. The adjacent dialog box appears.
Click on the “Hardware” tab, and then on “Device Manager.” This brings up the dialog box shown below:
If the USB is operating properly, “USB Serial Port (COMx)” appears under “Ports (COM & LPT). Typi­cally, the “x” is 3 or 4. Remember this virtual COM port number. It is the COM port to select when using the software provided with the Development Kit.
Development Kit, Rev. 0.3, September 20, 2006 Page 7 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
3 Development Board
Overview
Low-Cost Sensor Signal Conditioner with Diagnostics
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Potentiometer to adjust VDD to DUT (2.9V to 5.5V)
On-board 12-bit ADC for acquiring digitized version of the output signal
RESET push button
Measure DUT current across this jumper.
Artificial bridge stimulus through software (on-board 12-bit DAC coupled with on-board single­to-diff. block)
USB connector
Remove these two jumpers to drive the bridge externally.
RJ-11 connector to Remote Board
Programming header for PIC (not intended for customer use)
Optional socket for beta CDIP samples
SOP-8 socket with RBic
™ (red mark
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indicates pin 1)
Test points to measure/ drive bridge stimulus
Two-conductor terminal block (enables in-system calibration in customer systems)
Figure 3.1– Development Board Overview
The main purpose of the Development Board is to perform communication between the PC and the RBic chip. The PC sends commands and data via the USB (virtual COM port). The μController on the Development Board interprets these commands and relays them to the RBic μController will also forward any data bytes from the RBic
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TM
chip in the ZACwireTM format. The
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TM
chip back to the PC via the USB connection
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TM
as RS232 packets. These bytes can be bridge and temperature readings to be displayed by the PC software or raw ADC readings used during calibration or EEPROM content bytes.
3.1 Installing the Communications and Calibration Software
Install the RBic
TM
Development Kit CD-ROM in the PC hard drive. Locate the setup.exe file in the root
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directory of the CD-ROM, and double click on it. The software completes the installation.
Development Kit, Rev. 0.3, September 20, 2006 Page 8 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
Low-Cost Sensor Signal Conditioner with Diagnostics
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Connections to RBic
The Development Board has two socket locations for inserting the RBic
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TM
TM
. One is an SOP-8 socket and the
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other is an optional socket location for a ceramic dip sample (only used for beta samples; might be removed on future boards).
The RJ-11 connector can be used to connect to a remote board using the 4-conductor phone line provided with the kit. This remote board can contain the bridge to be calibrated and an RBic
TM
IC. The remote board
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can then be placed in a chamber that controls the parameter (e.g., pressure) that the bridge measures.
A third connection option is provided by the 2-wire terminal block. The two signals provided here are a power control signal and the ZACwire the user’s calibration fixture. The user must provide some hooks in their calibration fixture to enable this.
Please see ZMD31010 RBic NOTE: Only one connection option can be used at a time. For instance, do not install an RBic
SOP socket on the Development Board while another RBic
TM
signal. These can be used for in-circuit programming of the RBic
TM
Application Notes – In-Circuit Programming for further information.
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TM
is installed on a remote board connected
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TM
in the
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IC in
through the RJ-11 connection. They will conflict with each other and cause unpredictable behavior.
Power Supply to the Board
The USB cable provides the power supply to the board. The board contains a DC/DC switcher followed by an adjustable regulator to condition the supply. The large blue 15-turn potentiometer can be used to adjust the supply voltage in the 2.9V to 5.5V range. VDD can be measured referenced to ground via the two mini-test points provided on the board (red test point labeled VDD and black test point labeled GND). All components on the board are supplied with this VDD supply. All functions of the board are operative down to lowest adjustable voltage. The board has a green LED labeled PWR which lights if the board has power.
3.2 Reset Switch
The μController contains an on-chip power-on reset circuit that resets the state of the controller during power up of the board. The manual reset switch is not normally needed; however, if your board is unresponsive and seems to have lost communication with the PC, a manual reset can sometimes be the solution. When reset, the μController sends a “50% value” to the digital-to-analog converter (DAC) used for artificial bridge input generation. This could make your artificial bridge input control out of synch with the actual value. Push the reset button again to ensure the artificial bridge value driven matches the software control.
On-Board Analog-to-Digital Converter (ADC)
The board contains a 12-bit analog-to-digital converter (ADC, A2D) that can convert the analog value on the
TM
(ZACwire™) pin if the RBic
SIG Analog” button that sends a command to the board requesting a conversion of the SIG
TM
is configured in an analog output mode. The software contains a “Get
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TM
pin. The result of the conversion will be displayed both as a voltage and as a percent of VDD. The ADC used is ratiometric, so the voltage readout is only accurate if the VDD of the board is set to exactly 5.00V when measured between the mini-test points labeled VDD (red) and GND black).
Artificial Bridge Stimulus
The board contains a 12-bit DAC and a fully differential op amp circuit used to attenuate the DAC output and convert it to differential. This DAC can be written to via the software. The full range is approximately –10mV/V to +10mV/V. If the board VDD is at 5V, the artificial bridge stimulus can range from approximately –50mV to about +50mV over the full code range (0x000 to 0xFFF) of the DAC.
Development Kit, Rev. 0.3, September 20, 2006 Page 9 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
Low-Cost Sensor Signal Conditioner with Diagnostics
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This feature can be useful for dry run calibrations and testing purposes. The differential artificial bridge stimulus can only be applied to the RBic work with a remotely connected RBic
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TM
if the chip is socketed on the Development Board. It does not
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TM
.
The differential stimulus is driven through the two jumpers inline with the Bn/Bp test points (Bn=white=bridge negative, Bp=orange=bridge positive). These jumpers must be in place if using the DAC generated artificial bridge stimulus. When using an external bridge stimulus, remove these jumpers and apply the external stimulus directly to the Bn/Bp mini-test points.
What are the Jumpers For?
J1 Bn / J2 Bp
(See the “Artificial Bridge Stimulus” section.) Jumpers are required when using DAC as bridge stimulus.
J3 Imeas
This jumper can be removed and a current meter installed in its place to measure the current consumption of the RBic
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TM
IC. When using a remote board with a bridge, the mea­surement is the current consumption of the bridge and the RBic
TM
. Note: The RBic
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TM
has very low current consumption at lower update rates (sub 200μA) average; however, the current consumption comes in bursts, so a standard DMM could give inaccurate readings.
Figure 3.2– Jumpers on the Development Board
J5 Ext S. E. Bridge
The factory-default position for the Ext S.E. Bridge jumper connects the single-ended-to-differential artificial bridge stimulus circuit to the DAC. If this jumper is moved to the next position, the single-ended-to-differential attenuator circuit is instead connected to the mini-test point. This allows connecting a function generator to this test pin to drive in arbitrary waveforms. These waveforms are then attenuated 50:1 and converted to a differential waveform to be driven into the bridge inputs. For example, if the user moves the jumper to this position and drives a 20Hz 5V
waveform on the “Ext S.E. Bridge” test point, then a 20Hz 100mVPP
PP
differential waveform is driven to the bridge inputs (Bn/Bp).
Remote Board
The RBic Remote Board with an RBic
Remote Board allows the user to calibrate/test a bridge/IC pair in a controlled environment. The
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TM
and a bridge can be placed in a control chamber set to a given condition
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(pressure/temperature for instance). This allows calibration of the device without placing the entire Development Board in a chamber, which is not recommended.
Development Kit, Rev. 0.3, September 20, 2006 Page 10 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
Low-Cost Sensor Signal Conditioner with Diagnostics
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Remote Board
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TM
in an SOP-8 package. At
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Figure 3.3 shows the RBic
Figure 3.3 – The RBic
Remote Board, which has a footprint for an RBic
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the left, there is also a SOP-8 footprint that only breaks out to vias, which can be used for a user’s sensor in an SOP-8 package. To use this footprint, wire the Bridge Supply, Bridge Sink, Brdg+, and Brdg- to VDD, Bsink, Bp, and Bn respectively. There is also a footprint (MPAK) available for a MPXM2010 gauge pressure sensor. There is also a 0.1 grid field to connect other types of bridge sensors.
The remote board can connect to the Development Board via the 4-conductor phone style modular cable. One cable is provided with the Development Kit.
Development Kit, Rev. 0.3, September 20, 2006 Page 11 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
Low-Cost Sensor Signal Conditioner with Diagnostics
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4 RBic
TM
Tester Software
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Overview
The software ZMD provides with this Development Kit is intended for demonstration purposes and calibration of single units. ZMD can provide the user with algorithms and assistance in developing their full production calibration software. The Appendix B gives information about the protocol in detail.
COM1/COM2/COM3/COM4 Radio Button and Status Windows
Select the COM port to use for the PC ⇔ Development Board communication via USB. If the correct setting is unknown, a “trial and error method” can be used. If the COM port setting is incorrect, the Status window shows an error message.
Figure 4.1 – Bridge and Temperature Display and Data Logging
Development Kit, Rev. 0.3, September 20, 2006 Page 12 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
ZMD31015
RBic
Development Kit Documentation
Bridge and Temperature Display
The software displays two large readout windows for temperature and bridge values. The temperature reading is the RBic of the % reading to the value the bridge is measuring. The RBic bridge conditioner, but for the following calibration example, assume it is connected to a pressure bridge. If the unit is calibrated to read pressure with 50kPa reading as 100% and 10kPa reading as 0%, then the span of pressure readings would be 40kPa. Half that span (20kPa) plus the set zero point (10kPa) should be the 50% point. After calibration, if the chamber is set to 30kPa, the RBic
These readout windows only display temperature and bridge readings if the RBic digital output configuration. There are two digital output configurations:
• Transmission of bridge readings and temperature
• Transmission of only bridge readings (no temperature)
Temperature is not displayed unless the RBic Digital Mode.
Low-Cost Sensor Signal Conditioner with Diagnostics
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TM
temperature in oC. The bridge reading is in %. Calibration determines the relationship
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TM
is configured to transmit both bridge and temperature in
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TM
is designed to be a generic resistive
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TM
should give a 50% reading.
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is programmed in
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Data Logging Section
Bridge and temperature readings can be logged to a PC file. This feature is in the “Data Logging” section. Use the “Browse” button to select the directory where the file is stored. Then click “Open.” The “Sample Rate” field sets how often the data is collected. If the sample rate is 0sec, then an entry is written for each transmission from the RBic
®
Excel
.
TM
. The resulting file is a space-delimited ASCII file and can be imported into Microsoft
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ZACwire™ Baud Rate
The default nominal baud rate for ZACwire™ transmissions from the Development Board to the RBic 22kHz. The RBic
ZMD31010 RBic
™ oscillator is trimmed at the factory and has a nominal baud rate of 32kHz. See
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TM
Application Notes – In-Circuit Programming Boards for more information.
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TM
is
EEPROM Section
The “EEPROM” section contains all of the fields of the RBic
TM
EEPROM (non-volatile memory). The value
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of each individual field is displayed in this section when “Read” is clicked.
Command Interface Section
This section allows issuing commands to the RBic “START CM” command button (Start Command Mode) before sending any commands to the RBic puts the RBic
TM
into Command Mode, and the output values in black display fields do not update.
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TM
including any valid RBic
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TM
command. Click the
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TM
. This
Response Field
If the RBic
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successfully enters Command Mode, it sends a 0xA5 response, which is displayed in the
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“Response” field.
Command/Subcommand/Data Fields
To send a command to the RBic
TM
, click on its text description in the “Command” section. If the command
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has a sub-command component, then also click the selected sub-command in the “Sub-Command” section. Some commands also require one or more hex digits of data. Enter these in the “Data” field.
Development Kit, Rev. 0.3, September 20, 2006 Page 13 of 43 © ZMD AG, 2006
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The Information furnished in this publication is preliminary and subject to changes without notice.
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