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Appendix A -- ECM8 Specifications--

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Содержание ECM8

Страница 1: ...ECM8 Electrochemical Multiplexer Operator s Manual Copyright 1991 2005 Gamry Instruments Inc Revision 5 0 September 26 2005...

Страница 2: ......

Страница 3: ...n while talking to us We will be happy to provide a reasonable level of free support for registered users of the ECM8 Electrochemical Multiplexer Reasonable support includes telephone assistance cover...

Страница 4: ...tem at any time without incurring any obligation to install same on systems previously purchased All system specifications are subject to change without notice There are no warranties which extend bey...

Страница 5: ...printing However Gamry Instruments Inc assumes no responsibility for errors that might appear Copyrights ECM8 Operator s Manual copyright 1991 2005 Gamry Instruments Inc Gamry Framework copyright 1989...

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Страница 7: ...ion 3 1 Power Cord and Line Voltage Selection 3 1 Power Up Test 3 2 Communications Test 3 2 Connection to a Gamry Instruments PCI4 or PC4 Potentiostat 3 2 Connection to Gamry Instruments Reference 600...

Страница 8: ...Disabling the ECM8 Local Potentiostats 4 15 Comprehensive Index 5 1...

Страница 9: ...nd connection is made via the ground prong in the AC line cord When you use the ECM8 with an approved line cord the connection to the protective earth ground is automatically made prior to making any...

Страница 10: ...ee the AC input module on the upper left hand corner of the panel Note the number that appears in the small window It is the nominal line voltage setting Table 1 2 shows the range of input voltage for...

Страница 11: ...wer line voltage setting used by the ECM8 Please follow these instructions carefully You will need a small flat blade screwdriver to perform this procedure 1 Unplug the AC power line cord from the bac...

Страница 12: ...efully You will need a small flat blade screwdriver to perform this procedure 1 Unplug the AC power line cord from the back of the ECM8 The fuses cannot be changed with the AC line cord plugged into t...

Страница 13: ...thin the enclosure must not exceed 40 C You may need to provide ventilation holes or even forced air cooling for the enclosure if excessive temperature rise occurs Defects and Abnormal Stresses You sh...

Страница 14: ...ratory environments The ECM8 is likely to cause radio frequency interference if operated in a residential environment Electrical Transient Sensitivity Your ECM8 Electrochemical Multiplexer was designe...

Страница 15: ...uted standards limiting radio frequency interference from electronic devices and mandating several safety requirements Gamry Instruments Inc has modified its instruments including the ECM8 to comply w...

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Страница 17: ...cells in a single test run In this system a sophisticated Microsoft WindowsTM program is used to control both the ECM8 and a Gamry Instruments potentiostat However the ECM8 is not restricted to use i...

Страница 18: ...ostat is slightly misleading Most potentiostats can also be used as a galvanostat or as a ZRA zero resistance ammeter in an ECM8 system In the description of this figure keywords will be shown in bold...

Страница 19: ...ses a test to be run on that cell The test can be as simple as a single current or potential measurement or as complex as a cyclic scan The computer software and system potentiostat are responsible fo...

Страница 20: ...cell to the system potentiostat Channel An ECM8 contains eight channels A channel includes cell switching an Aux A D switch optional a local potentiostat and a D A converter The term cell will be used...

Страница 21: ...and switch 1 Amp You can normally use the ECM8 with potentiostats rated at up to 100 volts of output compliance and 2 Amps of output current To avoid transients you should always turn off the cell at...

Страница 22: ...local potentiostat has no cell switch other than S3 and it cannot measure current Notice that the reference electrode is always connected to the local potentiostat amplifier You must make sure that t...

Страница 23: ...circuit board Appendix B contains a list of the available baud rates and detailed instructions on changing the baud rate switch Warning Always unplug the ECM8 power cord before opening the ECM8 chassi...

Страница 24: ......

Страница 25: ...r of the instrument because all cable connections are made from the rear The ECM8 is not restricted to operation in a flat position You can operate it on its side or even upside down You can also rack...

Страница 26: ...unctioning Communications Test A special test script allows you to check communications between your computer and your ECM8 Connect the RS232 cable between the computer and the ECM8 and power up the E...

Страница 27: ...e optimal when all the cell cables used are 1 5 meter PCI4 type cables All other cable may create phase and magnitude errors Connection to a Gamry Instruments FAS1 or FAS2 Femtostat Connection of your...

Страница 28: ...if this is your situation 1 5 m 4m and 9 m cables are available with banana plug alligator clip termination Specialized cables are also available including cables designed for connection to standard...

Страница 29: ...ve channel pin from any source Impedance 500 M Equiv impedance to ECM8 chassis ground 20 pF Local Potentiostat Compliance Current 20 mA 500 load Compliance Voltage 11 volts 1 k load Applied E Range 5...

Страница 30: ...Appendix A ECM8 Specifications 4 2...

Страница 31: ...he cover Remove this screw making sure that it does not get misplaced 3 Slide the ECM8 top cover backwards and off the chassis You may need to loosen do not remove the set of screws on one side of the...

Страница 32: ...Appendix C I O Connections for the ECM8 4 4...

Страница 33: ...system potentiostat uses a differential electrometer This pin can be left open when the ECM8 is used with a potentiostat that uses a single ended electrometer 2 WS Shield The shield for the working s...

Страница 34: ...ectrode connection carries the cell current Connect the white pin jack to the cell s reference electrode generally an SCE or Ag AgCl reference electrode Connect the red and orange banana plug to the c...

Страница 35: ...nse lead 5 Ground The system potentiostat s floating ground 6 Ref Electrode Connect to the reference electrode input on the system potentiostat 7 Ref Shield The shield for the reference electrode cabl...

Страница 36: ...entiostat does not have a working electrode sense lead the working sense pin on the ECM8 can be left open You can ignore the counter sense pin on the ECM8 connector unless the cable is intended for us...

Страница 37: ...ously In total the ECM8 requires 32 bytes for its registers It also uses one additional location to update the D A converters simultaneously The location of the registers in the microcontroller s addr...

Страница 38: ...o the system potentiostat Bit assignments within the Relays register are shown in Table D 2 An X refers to the channel being addressed Relays with an X in their designation eg KX01 exist on each chann...

Страница 39: ...n Table D 3 Table D 3 ECM8 Operating Mode Bit Patterns Mode High Signals Hex code Active Cell Aux_A D and Active 18 Inactive Open circuit None 00 Inactive Local Potentiostat Local_Pstat and Work_GND 0...

Страница 40: ...ommand With the exception of the E error command and the V version command commands do not generate output from the ECM8 other than the Ready or Error indications The E and V commands generate a hex n...

Страница 41: ...nge Examples include a register address greater than 1F or a data byte with more than 2 hex characters Overrun Bit 3 Code 0x08 RS232 input has exceeded the buffer size in the ECM8 I Initialize The ini...

Страница 42: ...Update The update command is used to write the shadow RAM registers to the ECM8 hardware When this command is received the data is written as quickly as possible and the UPDATE address location is ac...

Страница 43: ...ve a several volt difference between these grounds without any adverse effects on measurements made through the ECM8 Larger ground differences are likely to cause a violation of the 12 volt electrode...

Страница 44: ...M8 s front panel towards the ECM8 s rear panel The local potentiostat jumpers are near the back of the instrument There are eight jumpers one for each channel They are located in a gap within the fiel...

Страница 45: ...ental specifications 4 1 environmental stress 1 5 Error RS232 command 4 13 faraday shield 4 6 Firmware 4 11 Floating Operation 4 15 floating potentiostats 4 15 fuses 1 2 1 4 ground 4 5 4 15 I O regist...

Страница 46: ...static electricity 1 6 storage 1 5 support i system computer 2 3 definition 2 4 system potentiostat 2 3 2 4 Update RS232 command 4 14 ventilation 1 5 Version RS232 command 4 14 Visual Inspection 3 1 v...

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