Keithley 2308 Скачать руководство пользователя страница 38

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Index

Advanced features

Analog output

Optimizing measurement speed

Auto Zero State

Programming examples

DVM input mode

Front panel

Operation

operation for output bandwidth

operation for performing long

integration measurements

operation for performing pulse current

measurements

Front-panel operation

Average readings

Menu controls

NPLC rate

Programming examples

Setting the output voltage, current

range, and current limit

Turning supply output ON/OFF

V and I display modes (Single and

Dual)

Long integration mode

Menu controls

Performance features

Programming examples

making voltage measurements with

the DVM

outputting and reading back V and I

pulse current measurements

programming examples

Proper connection of the supply

to the DUT

Pulse current mode

Variable output bandwidth

Front-panel operation for output

bandwidth

Variable output impedance control on

battery channel

Содержание 2308

Страница 1: ...www keithley com Model 2308 Portable Device Battery Charger Simulator Quick Start Guide 2308 903 01 Rev A July 2008 2308 903 01 qxp 7 28 08 11 08 AM Page 1...

Страница 2: ...duct returned transportation prepaid Repaired or replaced products are warranted for the balance of the original warranty period or at least 90 days LIMITATION OF WARRANTY This warranty does not apply...

Страница 3: ...e with electrical signals that are rated Measurement Category I and Measurement Category II as described in the International Electrotechnical Commission IEC Standard IEC 60664 Most measurement contro...

Страница 4: ...d common mode voltages Use standard safety precautions to avoid personal contact with these voltages The symbol on an instrument shows that the surface may be hot Avoid personal contact to prevent bur...

Страница 5: ...or use the information herein in whole or in part without the prior written approval of Keithley Instruments Inc is strictly prohibited TSP TSP Link and TSP Net are trademarks of Keithley Instruments...

Страница 6: ...1 7 Turning supply output ON OFF 1 7 V and I display modes Single and Dual 1 8 DVM input mode Channel 2 Only 1 11 Pulse current mode 1 12 Long integration mode 1 21 Variable output impedance control...

Страница 7: ...connection 5 Figure 5 Charger channel 4 wire remote sense connection of the DUT to the output 6 Figure 6 Charger Control Circuit Testing 11 Figure 7 Pulsed waveform 13 Figure 8 Eliminating the effect...

Страница 8: ...ont panel Performance features The Model 2308 is a specialized power supply that has a very fast recovery to large near instantaneous load current transitions Conventional power supplies do not have t...

Страница 9: ...nel view of the Model 2308 detailing the connector sockets for the battery channel OUTPUT 1 and the charger channel OUTPUT 2 Figure 3 and Figure 4 show optimum remote 4 wire connections for device und...

Страница 10: ...NO INTERNAL OPERATOR SERVICABLE PARTS SERVICE BY QUALIFIED PERSONNEL ONLY CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE FUSE WITH SAME TYPE AND RATING MADE IN U S A LINE RATING 100 120...

Страница 11: ...provide a voltage output based on the measured current as follows 0 5 5 A Output referenced to Source 1 A V each volt out represents 1A 5 50 mA Output referenced to Source 10 mA V each volt out repres...

Страница 12: ...g outputs provide a voltage output based on the measured current as follows 0 5 5 A Output referenced to Source 1 A V each volt out represents 1A 5 50 mA Output referenced to Source 10 mA V each volt...

Страница 13: ...se connection of the DUT to the output NOTE Twist Source leads together and twist Sense leads together for optimum performance External Test Circuit Quick Disconnect Connector Model 2308 Source Input...

Страница 14: ...roll to the desired current range 6 Press the ENTER key to select To set the output voltage and current limit 1 Press the SET key to select the output settings mode A blinking cursor appears in the vo...

Страница 15: ...e of the instrument is specified as a parameter based on the number of power line cycles NPLC where 1 PLC for 60Hz line frequency NOTE To display measured readings if the instrument is in the settings...

Страница 16: ...read back measure the actual voltage and current Battery channel 1 VOLT 5 Set output voltage to 5 V SENS CURR RANG AUTO ON Enable auto range for current CURR 750e 3 Set current limit to 750 mA CURR TY...

Страница 17: ...50 mA SOUR2 CURR TYPE LIM Select LIM mode for current limit SENS2 FUNC VOLT Select the voltage measurement function SENS2 NPLC 4 Set integration rate to 4 PLC SENS2 AVER 4 Set average reading count to...

Страница 18: ...ss the DISPLAY key to access the display menu 2 Press the or keys to scroll to DISPLAY TYPE 2 since DVM is channel 2 only feature 3 Press the or keys to scroll to DVM INPUT 4 Press ENTER to select NOT...

Страница 19: ...integration is performed for the time specified for the high measurement The falling edge of the pulse triggers the low measurement and an integration is performed for the time specified for the low...

Страница 20: ...HIGH integration time denoted by TH1 to 533 s For this value of HIGH integration time the effect of the current transient at the beginning of the pulse is included in the measurement Although in this...

Страница 21: ...items Scroll through the main menu and when PULSE CURRENT 1 2 is displayed press ENTER to access the sub menus Turn on the output Press the OPERATE key after setting the appropriate voltage and curren...

Страница 22: ...rrent range is displayed at the beginning of line two After keying in the trigger level in amps press ENTER to update the displayed trigger level setting for that current range only Charger channel 2...

Страница 23: ...nel display The value for TIMEOUT should be set to a value greater than the pulse period The default value is 1 second Trigger delay if necessary Channel 1 and Channel 2 The trigger delay is changed i...

Страница 24: ...DISPLAY TYPE 2 3 Press the or keys to scroll to PULSE CURRENT 4 Press the ENTER key to select 5 Use the or keys to scroll to the desired pulse measurement PULSE HI PULSE LO or PULSE AVG NOTE To displa...

Страница 25: ...re not detected with the output OFF With the output ON pulses will not be detected if the trigger level is too low or too high Adjust the trigger level as necessary and toggle back to the display mode...

Страница 26: ...or battery channel NOTE Figure 9 contains a simple circuit for determining the dynamic voltage and current characteristics of the DUT Quick Disconnect Connector DUT Source Source Sense Sense Source So...

Страница 27: ...nt conversions and return the average of those 10 conversions The average of the 10 conversions is displayed on the front panel Each of the 10 conversions syncs to the rising edge Charger channel 2 SE...

Страница 28: ...G pulse edge can trigger a long integration measurement see Set trigger level on page 22 To average over several pulse periods the user must enter the sum of the pulse periods as the integration time...

Страница 29: ...5 A 500 mA 50 mA or 5 mA current range For the 5 A current range the trigger level can be set from 0 to 5 A in 5 mA steps For the current 500 mA range the trigger level can be set from 0 to 500 mA in...

Страница 30: ...UT value to a value greater than a single pulse period The default setting is 16 ms Manually setting long integration time INTEGRATION TIME submenu The value for LINT INT TIME for Channel 1 or Channel...

Страница 31: ...measurement SENS LINT TLEV 0 1 Set trigger level to 100mA for 5 A trigger level range SENS LINT TIME AUTO Set integration time automatically for single pulse SENS FUNC LINT Select long integration fun...

Страница 32: ...SOUR2 CURR 0 75 Set current limit to 750 mA OUTP2 ON Turn output on SENS2 LINT TEDG RISING Select rising trigger edge to initiate measurement SENS2 LINT TLEV 0 1 Set trigger level to 100 mA SENS2 LIN...

Страница 33: ...Press the MENU key 2 Press the or keys to scroll through the menu items until OUTPUT IMPEDANCE is displayed 3 Press the ENTER key and use the or keys to set an output impedance between 0 00 and 1 00...

Страница 34: ...ances The default bandwidth is LOW Bandwidth Front panel operation for output bandwidth The following settings are available in main menu under OUT BANDWIDTH 1 2 Use the or keys to set the desired out...

Страница 35: ...ry channel is programmed for either the 50 mA or the 5 mA range Connect to the appropriate analog output terminal and the Source terminal The analog outputs provide a voltage output based on the measu...

Страница 36: ...e forced to update all must be refreshed before a user triggered reading can be measured When auto zero state is set to ON background readings continuously refresh by cycling when the instrument is id...

Страница 37: ...et pulse high time to 350 microseconds read hund switch to the 500 mA current range trigger a pulse current high reading and return it read amp switch to the 5 A current range trigger a pulse current...

Страница 38: ...8 Programming examples 9 Setting the output voltage current range and current limit 7 Turning supply output ON OFF 7 V and I display modes Single and Dual 8 L Long integration mode 21 M Menu controls...

Страница 39: ...Unstable Will not read applied input Overload Calibration only Certificate of calibration required Data required attach any additional sheets as necessary Show a block diagram of your measurement sys...

Страница 40: ...of Keithley Instruments Inc All other trademarks and trade names are the property of their respective companies A G R E A T E R M E A S U R E O F C O N F I D E N C E Keithley Instruments Inc Corporate...

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