VTI SCP1000 User Manual Download Page 10

 
 

SCP1000 DEMO KIT 

User Manual 

 
VTI Technologies Oy 

 

9/19 

www.vti.fi Doc.Nr. 

8268000.03 

Rev.0.03 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

4.1.5 Pres offset adjustment 

In pressure offset adjustment display user 
can adjust the absolute pressure offset 
value of the SCP1000. The MCU inside the 
demo box can read and write the pressure 
offset adjustment of the SCP1000 by using 
the SCP1000 internal EEPROM registers' 
USERDATA1 (0x29) and USERDATA 
(0x2A). The offset adjustment is performed 
in high resolution measurement mode. 
After SCP1000 offset is adjusted in this 
display, user can verify the calibration 
results in MEAS RESULTS display.  
 

 
In offset adjustment display user can: 

Figure 9. Pressure offset adjustment display. 

-  Program the SCP1000 offset adjustment in to the SCP1000 internal EEPROM registers 

USERADATA1 and USERDATA2 ("Start offset adjustment" button) 

Read the current SCP1000 offset adjustment data from the two EEPROM registers ("Read 
current adjustment data" button) 

Reset the SCP1000 offset adjustment data by writing zeros in to two EEPROM registers ("Zero 
offset adjustment data" button) 

 
Please refer to the following documents: 

"TN48 SCP1000 Pressure Offset Adjustment" for more detailed information on offset zeroing 
and offset adjustment bit level presentation that is used in this demo 

-  "SCP1000 Product Family Specification 8260800" for more detailed information SCP1000 

EEPROM register reading/writing 

 
 

Summary of Contents for SCP1000

Page 1: ...ess mainly focus on the distribution of electronic components Line cards we deal with include Microchip ALPS ROHM Xilinx Pulse ON Everlight and Freescale Main products comprise IC Modules Potentiometer IC Socket Relay Connector Our parts cover such applications as commercial industrial and automotives areas We are looking forward to setting up business relationship with you and hope to provide you...

Page 2: ...Doc Nr 8268000 03 SCP1000 DEMO KIT User Manual ...

Page 3: ...t up and Reset demo 7 4 1 3 Meas results 8 4 1 4 Register config 8 4 1 5 Pres offset adjustment 9 4 1 6 Setup 10 4 2 Uninstalling the GUI and USB driver 10 5 Using the SCP1000 demo without the GUI software 11 5 1 Establishing the connection 11 5 2 Communication commands 12 6 Using two SCP1000 demo kits simultaneously 14 7 USB interface board circuit diagram 15 8 USB interface board PCB layout 17 9...

Page 4: ...rements a laptop operating on battery is recommended mains supply disconnected 2 Quick start for using the SCP1000 DEMO KIT Please follow the steps below 1 Insert CD ROM 2 Setup the hardware Connect the USB cable to the demo and to PC s USB port 3 Install the USB driver after the PC has found the device When the PC detects the new USB device do not let Windows to detect the driver address the USB ...

Page 5: ...igure 2 below SCP1000 PCB1 with soldered SCP1000 D01 USB interface board USB cable SCP1000 sensor pin 1 ATST TRIG DRDY CLK DVDD DVSS pin 7 DVDDS AVSS pin 14 AVDD CSB MISO MOSI SCK PD pin 8 SCP1000 sensor Demo reset Figure 1 SCP1000 DEMO KIT USB interface board and SCP1000 PCB Virtual serial port driver GUI sw PC USB cable USB interface board SCP1000 PIC µC µC_VDD 3 3V SPI TWI data transfer AVDD 3 ...

Page 6: ...cale pressure and temperature displays press Reset displays to apply the changes 5 Capture pressure data to file browse for file name and location then press start data logging Every data point is saved by default the number of saved data points can be reduced 6 Open close the window extension with arrow button 7 Pressure mbar and altitude m displays 8 Select units mbar C m or inHg F ft 9 Selected...

Page 7: ... the offset adjustment from the SCP1000 EEPROM 1 Activate High resolution measurement mode Meas results display pressure results are corrected by values read from EEPROM 1 2 Back to Meas results display Displays register config pres offset adjustment setup reset demo User changes display from pull down menu NO YES 1 more information on SCP1000 offset adjustment in Figure 9 and in TN48 2 If the pre...

Page 8: ...ort number please disconnect all other USB serial port devices from the PC and restart the GUI software Figure 5 USB serial port selection pop up window 4 1 2 Start up and Reset demo During the GUI software start up or after selecting Reset demo from the Display pull down menu the MCU inside the SCP1000 demo detects automatically the correct sensor type and serial bus SPI TWI Then the MCU reads th...

Page 9: ... following units Figure 7 Meas results display mbar C m or inHg F ft Some of the actions controls listed above can be found from the extension part of the window which can be accessed by pressing the arrow button see Figure 3 and Table 1 The Trig measurement button is displayed in the extension part of the window only when the SCP1000 is in low power measurement mode The Table 5 information is pre...

Page 10: ...display In offset adjustment display user can Figure 9 Pressure offset adjustment display Program the SCP1000 offset adjustment in to the SCP1000 internal EEPROM registers USERADATA1 and USERDATA2 Start offset adjustment button Read the current SCP1000 offset adjustment data from the two EEPROM registers Read current adjustment data button Reset the SCP1000 offset adjustment data by writing zeros ...

Page 11: ...tware see further details from section 5 In this example the SCP1000 DEMO KIT uses COM4 serial port Standard window frames can be enabled disabled In Figure 10 the window frames are disabled Figure 10 Setup display 4 2 Uninstalling the GUI and USB driver The GUI software and the USB driver FTDI Serial Converter Driver can be removed from Windows Control Panel Add Remove Programs Please notice that...

Page 12: ...erminal software can not be open at the same time Follow the steps below to open the HyperTerminal connection 1 Connect SCP1000 DEMO KIT with USB cable to PC 2 Open GUI software to see the correct COM port number SETUP display see Figure 10 3 Close the GUI software 4 Open the pre configured Windows HyperTerminal software from the DEMO KIT CD ROM SCP1000_Demo_pre configured_HyperTerminal_connection...

Page 13: ...ower On and or and MCU detects the SCP1000 product type and serial bus SPI or TWI MCU reads the offset difference from SCP1000 EEPROM MCU does not write the low noise configuration commands Edit registers Register edit commands WD Write Direct register RD Read Direct register WI Write Indirect register RI Read Indirect register WE Write EEPROM register RE Read EEPROM register RS SCP1000 startup se...

Page 14: ...ion via 3 direct registers please see section 3 3 1 in SCP1000 Product Family Specification 8260800 for further details RI Read SCP1000 indirect register MCU performs the indirect read operation via 3 direct registers please see section 3 3 1 in SCP1000 Product Family Specification 8260800 for further details WE Write SCP1000 EEPROM register MCU performs the EEPROM write operation via 3 direct reg...

Page 15: ...ning controlling or air flow measurements differential pressure measurement is required To support these kinds of applications two or even more SCP1000 demo kits can be used simultaneously on one PC In order to use two SCP1000 demo kits simultaneously follow the steps below 1 Install the GUI software and USB driver as instructed above see section 2 2 Connect the 1st SCP1000 demo kit to PC 3 Start ...

Page 16: ...ace board circuit diagram SCP1000 demo USB interface board circuit diagram is presented in following pages Figure 13 SCP1000 DEMO KIT USB interface board circuit diagram sheet USB VTI Technologies Oy 15 19 www vti fi Doc Nr 8268000 03 Rev 0 03 ...

Page 17: ...SCP1000 DEMO KIT User Manual VTI Technologies Oy 16 19 www vti fi Doc Nr 8268000 03 Rev 0 03 Figure 14 SCP1000 DEMO KIT USB interface board circuit diagram sheet MCU ...

Page 18: ...USB interface board PCB layout and silkscreen is presented below Figure 15 SCP1000 demo USB interface board PCB layout left top right bottom Figure 16 SCP1000 demo USB interface board silkscreen left top right bottom VTI Technologies Oy 17 19 www vti fi Doc Nr 8268000 03 Rev 0 03 ...

Page 19: ...he USB port where the demo is connected SCP1000 demo may not work properly if your PC has multiple USB serial ports installed Please remove all other USB serial port devices including the SCA3000 demo Close Windows HyperTerminal software if you have used it Re install the FTDI USB Serial port driver 1 Unplug the demo from PC 2 Uninstall the FTDI USB Serial Converter Drivers from Control Panel Add ...

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