EV9930 Evaluation Kit User Manual
Contents
1. 7 Possible Errors 19 encounter Error Observed No RF Output Discrete spurious present on transmission at 18kHz offset from carrier causing degrading adjacent channel power when using EV9810 to generate modulation 2008 CML Microsystems Plc EV9930 Units mA Units UM9930 1 Max 2 0 20 Max Evaluation Kit for 3 7 Performance Specification 7 1 Electrical Performance 7 1 1 Absolute Maximum Ratings Exceeding these maximum ratings can result in damage to the Evaluation Kit Min 0 0 20 Supply Voltage Vin Vss Current into or out of Vin and Vss pins Current into or out of any other connector pin 7 1 2 Operating Limits Correct operation of the Evaluation Kit outside these limits is not implied Notes Min 4 0 20 Supply Voltage Vin Vss Notes 2008 CML Microsystems Plc EV9930 Units mA mA dBm dB Vp p VDC MHz dBm UM9930 1 Max 30 1 0 2000 10 Typ 103 2 5 0 7 50 Min 200 15 Evaluation Kit for 3 71 3 Operating Characteristics For the following conditions unless otherwise specified Vin Vss 7 2V Tamb 25 0 Notes DC Parameters Excluding PA Supply Ibp CMX993 powersaved 2 lpp All CMX993 EV9930 Circuitry Enabled 2 AC Parameters Up Converter Output Output power Attenuator Range Attenuator Step Size UO Input Signal Amplitude 3 DC Level 3 LO Inp2. PE0002 or host Interface controller PC See schematics and CMX993 datasheet for details 5 0V 5 0V power supply input GND Power supply ground LO IN LO input can be applied at 2 x RF output frequency or 4 x RF output frequency Nominal input level is 10dBm TXQ Baseband Q input signal non inverting input of input amplifier TXI Baseband input signal non inverting input of input amplifier TXQ TXQ Baseband Differential UO input from the CMX981 TXI TXI evaluation board GNDA Baseband Connection to analogue ground RFOUT RF Modulator RF output Table 2 Signal List 2008 CML Microsystems Plc 8 UM9930 1 Evaluation Kit for 3 EV9930 CONNECTOR PINOUT for J1 Pin No Name pe C BUS enable n Spare pin Leave unconnected S_DATA_IN C BUS data input Ni Spare pin Leave unconnected S CLOCK C BUS clock Spare pin Leave unconnected Spare pin Leave unconnected Spare pin Leave unconnected Interrupt request if required Not used Ground Table 3 C BUS 2 Interface 2008 CML Microsystems Plc 9 UM9930 1 Evaluation Kit for 3 EV9930 CONNECTOR PINOUT for J2 Pin No Name pe NRESET General Reset reset when pin is low CSN C BUS enable Spare pin Leave unconnected S_DATA_IN C BUS data input Spare pin Leave unconnected S_CLOCK C BUS clock Spare pin Leave unconnected oOo N DOO BEM Spare pin Leave unconnected Spare pin Leave unconnected Interrupt request if required Not used Connect
3. a PE0002 using the connector J2 labelled C BUS 1 First ensure the drivers supplied for the PE0002 are installed correctly Run the ES9930xx exe and the main application window will open with a progress bar for the initialisation process Once the initialisation process is complete one of two tabs can be selected To select a tab simply click on the corresponding name in the row at the top of the program window Setting or clearing the check box associated with a bit of a register will cause that bit to be set or cleared when the register is next written to If the Auto Write check box is set a register will be written whenever a check box or list box associated with it is modified This removes the need to click the Write button associated with that register The program can be closed at any time by clicking the Close button or by pressing Alt and F4 keys simultaneously 6 2 1 The CMX993 Regs 02 08 Tab This tab allows all registers of the CMX993 to be controlled and a general or hardware reset to be performed Also on this tab the PE0002 CBUS header 1 and 2 can be selected ES9930 Evaluation Kit Software CMX993 Regs 02 08 Script Handler Reset Functions General Ctrl Reg 02 Input Amp En Ya Modulator En Filter Amp En Bias Circuit En Write Gen Reset Cmd HAN Reset Write Gen Ctl Reg Frequency Ctrl Reg 08 Gain Ctrl Reg 05 DIV Bit Modulator Attenuation Ope
4. with the same output power The plot in Figure 60 shows the ACP performance at 450MHz with APCO C4FM modulation the measurement is non spurious adjacent channel power ratio TIA EIA 102 CAAB B requirement 67dBc typical performance 70dBc Typical input drive level at the modulator for OdBm output level at 450MHz is 350mVp p note the input amplifiers on the EV9930 have a gain of 0 5 Marker 1 T1 RBW 1 kHz RF Att 30 dB Ref Lvl 0 37 dBm VBW 1 kHz 10 dBm 449 99328657 MHz SWT 250 ms Unit dBm 10 0 6 dB Offse Vil T1 37 dB 1 449 99324657 MHz 0 YZ TTI 31 55 dB 49530 00030060 MHz 10 4 02804611 kHz 42 T1 54 40 dB KO 215 051 KHZ 1MA 230 EXT 40 50 60 f 70 80 90 Center 450 MHz 10 kHz Span 100 kHz Figure 7 OdBm Output Level at 450MHz with a single tone input 2008 CML Microsystems Plc 17 UM9930 1 Evaluation Kit for 3 EV9930 Marker 1 T1 RBW 1 kHz RF Att 30 dB Ref Lvl 2 54 dBm VBW 1 kHz 10 dBm 450 00931864 MHz SWT 250 ms Unit dBm 10 Vil vi 54 dB E 440 00931 864 MHz 0 H e 230 B 0 0 1MA 0 EXT 40 0 0 70 Center 450 MHz 10 kHz Span 100 kHz Figure 8 3dBm PEP Output two tone input at 450MHz Marker 1 T1 RBW 1 kHz RF Att 30 Ref Lvl 3 01 dBm VBW 1 kHz 10 4 dBm 00000892 GHz SWT 250 ms Unit dBm 10 4 1 dB Dffset Y l 4 01 dB 1 00000892 GH
5. EV9930 CML Microcircuits Evaluation Kit COMMUNICATION SEMICONDUCTORS User Manual UM9930 1 November 2008 Provisional Issue Features e Operational range 100MHz to 1GHz e Interfaces to CMX910 or CMX981 EvKit e Allows full evaluation and investigation of e Differential or single ended I and Q the CMX993 quadrature modulator inputs e AccesstoRF control and baseband e Canutilise PE0002 EvKit interface card signals via connectors and test points for PC interface or work with custom interface equipment SS 1 Brief Description The EV9930 Evkit allows for rapid and full evaluation of the CMX993 Quadrature Modulator IC by providing a populated pcb with access to all CMX993 RF baseband and control signals by either connectors or test points Test access points are available to accept common test equipments such as RF and baseband signal generators and spectrum analysers Control of the CMX993 is by registers which are accessible over the C BUS interface an SPI like serial interface A PE0002 Interface Card not supplied allows the C BUS interface to be controlled from a PC via its USB port Alternatively the C BUS interface can be controlled by an external microprocessor RF signal paths are matched by suitable components and the operating frequency range of the EvKit is for RF frequencies between 100MHz and 1GHz The EV9930 baseband inputs can be configured to work with the CMX910 AIS Baseband Processor IC or the CMX981 Digital Radio Baseb
6. Z 0 att SERA 999 99969940 MHZ 5 l r 31 06 dB 32 06417826 kHz 42 T 34 03 dB 29 413 KAZ a3 T 5d 68 ap ja 30 48 09619238 KHZ 1 2 EXT 40 50 60 70 80 89 6l Center 1 GHz 10 kHz Span 100 kHz Figure 9 3dBm PEP Output two tone input at 1GHz 2008 CML Microsystems 18 UM9930 1 EV9930 RF Att 20 dB Unit Span 31 kHz 100 Hz 1 kHz 15 5 8 RBW VBW SWT T1 95 57 dBm 450 01250000 MHz Marker 1 Evaluation Kit for 3 Ref Lvl 0 dBm Center 450 MHz Figure 6 OdBm Output Power at 450MHz with APCO C4FM Modulation 6 4 Troubleshooting The CMX993 EV9930 is a complex RF system If incorrectly programmed or modified results will be at variance from datasheet performance Please study the IC datasheet this manual and the associated schematics and layout drawings carefully when troubleshooting This section provides some suggestions to help users resolve application issues they might Remedy Try re enabling circuitry in CMX993 or measure UO signal at TL5 6 Check LO signal is present at sufficient drive level Ensure sufficient de coupling between power supplies or use separate bench power supplies for EV9810 and EV9930 UM9930 1 Possible Cause IO signals not applied LO signal not applied Insufficient isolation between EV9930 and EV9810 power supplies Table
7. and Processor IC standard test equipment or with a custom baseband system 2008 CML Microsystems Plc Evaluation Kit for 3 EV9930 CONTENTS Section Page 1 Brief Description rriiiiiii in 1 2 Preliminary Information 1 1 1 121 212 12 2 2 2 2 2 2 2 2 aana mean aama mana nnmnnn anan 5 2 1 Laboratory Equipments 5 2 11 ewer Supply mt ech a 5 2 2 Handling Pr cautions 5 2 2 1 Static Protectio N s rats aie he unes ie til ge kaii 5 2 2 2 Contents Unpacking 5 2 3 eelere EE 5 3 010161451911 ees E 6 3 1 Make External ConnectionsandApplyPower 6 3 2 Typical Configure sir 7 3 3 Op rateur amande iii alia ia 7 4 Signal Lists eane 2 2 2 2 2 2 2 2 2 2 2 2 2 8 5 Circuit Schematics and Board Layouts 12 6 Detailed Description i a 14 6 1 Hardware Description 14 6 1 1 Quadrature OO Modulator 14 6 1 2 Local Oscillator LO 14 6 1 3 WO Baseband Inputs i 14 6 1 4 Differential UO Interface 14 6 1 5 Power Supply 14 6 2 Software Description ss 15 6 2 1 The CMX993Regs 02 08 Tab 15 6 2 2 The Script Han
8. clicking on the Save Results or Clear Results buttons respectively When a script file is being executed the Run Script button will change to be the Abort button the rest of the tab will be disabled and the other tabs cannot be selected After a script has finished running and when trace data is available the See Trace button will be enabled Up to 131072 C BUS transactions can be logged in the PE0002 board Click in the See Trace button to display the Trace dialog box Note that the C BUS transactions are only logged if the feature has been enabled in the script For further details see the Script Language Reference document which can be downloaded with the PE0002 support package from the CML website 2008 CML Microsystems Plc 16 UM9930 1 Evaluation Kit for 3 EV9930 6 3 Application Information 6 3 1 Typical Performance All results have been taken with an LO level of 10dBm and with the modulator driven from the input amplifiers The filter amplifiers have been used to buffer BVREF to drive the other modulator inputs see the CMX993 datasheet for a typical application circuit The plot in Figure 7 shows the typical image rejection and carrier leakage seen at 450MHz at an output power level of OdBm The plot in Figure 8 shows the intermodulation IMD performance at 450MHz with a two tone input The output level is 3dBm PEP and the plot in Figure 9 shows the IMD performance at 1GHz
9. dler Tab 15 6 3 Application Information i 17 6 3 1 Typical Performance 17 6 4 Res e ee WEE 19 7 Performance Specifications 20 7 1 Electrical Performance 20 7 1 1 Absolute Maximum Ratings eeeeeeeeeeeeneeneereeresrrseresrreern 20 7 1 2 Operating Limits oeeeeeeeeeeeeeeeneen neer nsnreerasenssenssenssressrensrnne 20 7 1 3 Operating Characteristics 21 2008 CML Microsystems Plc 2 UM9930 1 Evaluation Kit for 3 EV9930 Table Page Table 1 Quick Start Signal Configuration us 7 Table 2 Signal Liste 1 8 Table 3 C BUS 2 Interface iii 9 Table 4 C BUS 1 Interface for PE0002 10 Table 5 lest Loops aliaiin ii he e e ina lion 11 Fable Testi ROSE a e a tea io sonar e A I 11 Table Possible Error Sari ariana la ali aa a a at 19 Figure Page Figure T Block Diagrami issues ne elele 4 Figure 2 Typical Evaluation Connections for EV9930 6 Fi ure 3 PGB Layout Op 0102 1 12 Figure 4 PCB Layout bottom m m 13 Figure 5 The CMX993 Regs 02 08 Tab 15 Figure 6 0dBm Output Power at 450MHz with APCO C4FM Modulation 19 It is always recommended that you check for the latest product datasheet versi
10. e at www cmlmicro com should be referred to for a detailed description of the CMX993 device The EV9930 functionality includes e Demonstration of the UO Modulator e Operation at 100MHz to 1000MHz e C BUS Interface that allows the card to be connected to a host Controller Interface to a PC for initial test and customer evaluation is available separately with the PE0002 which allows control of all device functions from a PC via the software available on the CML website e Direct Interface to CMX910 CMX981 evaluation cards which allows demonstration of 0 GFSK GMSK or x 4 DQPSK modulation o Burst and continuous transmission In summary the EV9930 allows the user to create experiments to investigate all aspects of the CMX993 device The EV9930 is designed to allow user modification to support the detailed investigation of each user s application 6 1 Hardware Description 6 1 1 Quadrature UO Modulator The card is configured to allow the CMX993 s Quadrature Modulator to operate with single ended external inputs The gains are set in the baseband amplifier sections to suit the input drive levels in section 6 1 3 The LO input and modulator output are matched with broadband balun transformers to allow wideband operation from 100MHz to 1GHZ The NRESET pin is pulled high with 100k ohms The user can pull this pin low to reset the device or the software reset can be used 6 1 2 Local Oscillator LO A local oscillator has not bee
11. evelopment board China Tel 86 21 6317 4107 86 21 6317 8916 Fax 86 21 6317 0243 Sales cn sales cmimicro com cn Tech Support sg techsupport cmimicro com CML Microcircuits Singapore Pte Ltd COMMUNICATION SEMICONDUCTORS Singapore Tel 65 67450426 Fax 65 67452917 Sales sg sales cmImicro com Tech Support sg techsupport cmImicro com CML Microcircuits USA Inc COMMUNICATION SEMICONDUCTORS Tel 1 336 744 5050 800 638 5577 Fax 1 336 744 5054 Sales us sales cmimicro com Tech Support us techsupport cmImicro com www cmlmicro com CML Microcircuits COMMUNICATION SEMICONDUCTORS OLI ue Tel 44 0 1621 875500 Fax 44 0 1621 875600 Sales sales cmimicro com Tech Support techsupport cmimicro com
12. ion to digital ground Connection to digital ground Spare pin Leave unconnected Spare pin Leave unconnected Spare pin Leave unconnected Spare pin Leave unconnected Spare pin Leave unconnected Spare pin Leave unconnected Digital power supply if required Not used Digital power supply if required Not used Table 4 C BUS 1 Interface for PE0002 2008 CML Microsystems Plc 10 UM9930 1 Evaluation Kit for 3 EV9930 TEST LOOPS Test Loop Default i GND Analogue ground probe point IRQN not used GNDD Digital ground probe point BVREF buffered Vref input amplifier output Q input amplifier output Table 5 Test Loops TEST POINTS Test Point Default FE Filtered 3 3V regulator output for digital circuits 3 3V regulator output for analogue circuits Alternative bias input Q channel Alternative bias input channel channel bias op amp output Q channel bias op Table 6 Test Points Notes P Input O P Output BI Bidirectional TL Test Loop TP Test Point 2008 CML Microsystems Plc 11 UM9930 1 EV9930 213 POWER LO IN UM9930 1 ov V CH gt ef TP2 2 c8 TL4 5 22 0 ZS CH E 2 R15 R18 R21 Ons 2 TP4 ps R27 9 amp R29 T2 L2 C22 623 0 g N rx Board Mod 2 3 4 RFOUT 5 6 7 8 Evaluation Kit for CMX993 5 Circuit Schematics and Board Layou
13. ld read the current CMX993 datasheet 3 1 Make External Connections and Apply Power In this first step external connections are made to the EV9930 and then power is applied Perform the following steps in sequence 1 Connecttestleads as shown below in Figure 2 2 Connect a host uController to C BUS interface J1 or J2 alternatively the CML PE0002 card 3 Power should be applied to the main supply 5 0V nominal RF Signal Generator CMX993 J5 LO_IN TXQ TXI EV9930 RFOUT J8 Baseband IQ Generator SS RF Spectrum Analyser Figure 2 Typical Evaluation Connections for EV9930 2008 CML Microsystems Plc 6 UM9930 1 Evaluation Kit for 3 EV9930 3 2 Typical Configure In this second step the EV9930 is configured as follows e With a single ended I Q baseband input signals at OV DC bias e With an LO signal applied to give an RF output at 450MHz Apply signals and set register values as per Table 1 Program the CMX998 registers by use of a host ucontroller or PE0002 Interface Card connected as per section 3 1 step 2 The CMX993 datasheet gives details of the registers and commands These can be set directly in the C BUS Control tab of the ES0002xx EXE software which forms part of the PE0002 kit pti or Setting Connector Note egister This frequency is twice the RF LO input 900MHZ at 10 dBm J4 output frequency that wi
14. ll be developed These inputs must be connected to gt LT oV DC J5 J6 OV DC do not leave them unconnected or open circuit Set the CMX993 General Control register bits 0 and 1 to their normal operating state set both to 0 and enable all of Modulator and LO ccts General Control register 02 e Bias circuits e Filter amplifiers e Input amplifiers Forward path gain control 0 dB register 05 Frequency pi This means the externally applied Control register e oo LO must be twice the desired RF 08 carrier frequency Table 1 Quick Start Signal Configuration 3 3 Operate Baseband UO signals typically 700mV to 1 0V pk pk can now be applied to develop a modulated RF output of 3dBm PEP Notes a The output of the CMX993 s input amplifiers should be 0 35V pk pk nominal and 0 5V pk pk maximum Any user changes to the input amplifiers external components and applied baseband UO signal levels should ensure the signal applied to the CMX993 modulator inputs MODOP MODQN MODIP MODIN remain within the specified range b The peak to average power ratio of the user provided modulation will determine the mean RF output power delivered by the EV9930 2008 CML Microsystems Plc 7 UM9930 1 Evaluation Kit for 3 EV9930 4 Signal Lists CONNECTOR PINOUT Connector Connector Signal Signal nen 0 C BUS 2 Interface Alternative header for C BUS interface C BUS 1 C BUS interface from
15. n provided on the EV9930 A connector is provided to allow an external oscillator source to be injected at twice or four times the RF output frequency depending on the oscillator mode selected in the CMX993 frequency control register 6 1 3 IQ Baseband Inputs The board allows the quadrature UO inputs to come from the CMX981 or from an alternative external source The input can be differential or single ended Adjusting the values around the CMX993 input amplifiers creates the required input configuration The default setup is for single ended inputs which are applied to TXI and TXQ A typical input signal level would be in the region of 700mV to 1 0V pk pk at OV DC bias 6 1 4 Differential O Interface The EV9930 has an interface to allow connection to the CMX910 or CMX981 evaluation cards also known as EV9100 and EV9810 The connector J7 allow differential UO signals to be applied directly from these boards 6 1 5 Power Supply The input to the PCB for the CMX993 and the interface circuits is nominally 5 0V 4 0V to 8 0V is acceptable An on board regulator generates the 3 3V power supply used on the EV9930 2008 CML Microsystems Plc 14 UM9930 1 Evaluation Kit for 3 EV9930 6 2 Software Description The EV9930 does not require any embedded firmware The PE0002 Interface Card available separately from CML and the related software zip file ES9930xx ZIP can be used to control the EV9930 To use the software connect the EV9930 to
16. on from the Datasheets page of the CML website www cmlmicro com 2008 CML Microsystems Plc 3 UM9930 1 EV9930 Interface Connector Coax nono UM9930 1 Evaluation Kit for 3 CMX910 CMX981 UO Interface Differential UO External UO Inputs Figure 1 Block Diagram 2008 CML Microsystems 4 Evaluation Kit for 3 EV9930 2 Preliminary Information The EV9930 provides a platform for the evaluation of the CMX993 To use the EV9930 a separate micro controller or PC is required to program the CMX998 via its C BUS interface This controlling device is not included on the EV9930 but a PE0002 Interface Card not supplied will provide the controlling functionality from a PC via its USB port 2 1 Laboratory Equipment The following laboratory equipment is needed to use this evaluation kit Power Supply Dual Power Supply if using PE0002 Spectrum Analyzer 100MHz to 1GHz RF Signal Generator 100MHz to 2GHz IO Quadrature Signal Source For more detailed design or investigation work the customer may require other RF test equipment 2 1 1 Power Supply The supply input voltage to the PCB is 5 0V 4 0V to 8 0V acceptable An on board regulator is provided to generate the power supplies used on the PCB The 5 0V supply should be rated at gt 200mA NOTE Care should be exercised with the supplies as they are not protected for reverse polarity NOTE When using the EV9930 kit with a PE0002 kit p
17. ower is not supplied to the PE0002 via the C BUS connector J2 The PE0002 must be connected directly to a separate 5Vdc regulated power supply 2 2 Handling Precautions Like most evaluation kits this product is designed for use in office and laboratory environments The following practices will help ensure its proper operation 2 2 1 Static Protection This product uses low power CMOS circuits that can be damaged by electrostatic discharge Partially damaged circuits can function erroneously leading to misleading results Observe ESD precautions at all times when handling this product 2 2 2 Contents Unpacking Please ensure that you have received all of the items on the separate information sheet EK9930 and notify CML within 7 working days if the delivery is incomplete 2 3 Approvals This product is not approved to any EMC or other regulatory standard Users are advised to observe local statutory requirements which may apply to this product and the radio frequency signals that may emanate from it 2008 CML Microsystems Plc 5 UM9930 1 Evaluation Kit for 3 EV9930 3 Quick Start This section provides instructions in three main steps for users who wish to experiment immediately with CMX993 evaluation more complete description of the kit and its use appears later in this document The EV9930 includes a CMX993 device that is described in its own separate datasheet Accordingly before using the EV9930 the user shou
18. rating Freq Band gt 500MHz Si Write Freq Ctrl Reg Write Gain Ctrl Reg Select Target Board CBUS Header 2 Write All Auto Write Figure 5 The CMX993 Regs 02 08 Tab 6 2 2 The Script Handler Tab The Script Handler tab shown in Figure 6 allows the execution of script files consisting of register write read and delay commands These are plain text files on the PC which are compiled via the GUI but executed by the E2 Microprocessor on the PE0002 board The script language is documented separately in the Script Language Reference document which can be downloaded with the PE0002 support package from the CML website Control of the EV9930 does not require the use of script files 2008 CML Microsystems Plc 15 UM9930 1 Evaluation Kit for 3 EV9930 ES9930 Evaluation Kit Software CMX993 Regs 02 08 Script Handler Figure 6 The Script Handler Tab To select a script file click on the Select Script button The Open File Dialog is displayed Browse and select the script file The folder that contains the script file will be the working folder of the script i e all the files referenced in the script will be searched in this folder Alternatively select a script file from the recent files list Click on the gt button to display the list The results window displays the values returned by the script These results can be saved to a text file or discarded by
19. ts For clarity circuit schematics are available as separate high resolution files These can be obtained via the CML website The layout on each side of the pcb is shown in Figure 3 and Figure 4 Serial Number e C BUS 2 Va LA R14 me T6 we Te N oD DIFF TXI TXQ J7 J8 1 Figure 3 PCB Layout top 12 J1 J2 CR R1 Onz C10 55 CH R6 C13 R7 R16 J5 TXQ 2008 CML Microsystems Plc C BUS 1 N gt 5 Or R4 On EV9930 UM9930 1 R35 C37 34 37 R38 C40 c39 R31 C27 C29 R40 R42 c43 C42 H 56 Rau D R43 3 Raa B cs R41 Figure 4 PCB Layout bottom 13 Evaluation Kit for 3 R8 19 20 2008 CML Microsystems Plc Evaluation Kit for 3 EV9930 6 Detailed Description The CMX993 datasheet availabl
20. ut Input impedance Frequency range Input Level C BUS Interface See CMX993 Datasheet Notes 2 EV9930 PCB current consumption not just the CMX993 current consumption 3 At J5 J6 2008 CML Microsystems 21 EV9930 Evaluation Kit for 3 CML does not assume any responsibility for the use of any circuitry described No IPR or circuit patent licences are implied CML reserves the right at any time without notice to change the said circuitry and any part of this product specification Evaluation kits and demonstration boards are supplied for the sole purpose of demonstrating the operation of CML products and are supplied without warranty They are intended for use in a laboratory environment only and are not for re sale end Operation of these kits and boards outside a laboratory environment is not use or incorporation into other equipments permitted within the European Community All software firmware is supplied as is and is without warranty It forms part of the product supplied and is licensed for use only with this product for the purpose of demonstrating the operation of CML products Whilst all reasonable efforts are made to ensure that software firmware contained in this product is virus free CML accepts no responsibility whatsoever for any contamination which results from using this product and the onus for checking that the software firmware is virus free is placed on the purchaser of this evaluation kit or d
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