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Pulse Current Mode:

The Pulse Current Mode sets the instrument to display high, low, or aver-

age pulse-current measurements and to return these readings over the bus. The

Model 2304 can perform current measurements on dynamic loads. The built-in

measurements include:

1. Peak measured current — Measures the peak (high) current of the

pulse train.

2. Idle measured current — Measures the idle (low) current of the pulse

train.

3. Average transmitted current — Measures the average current of the

pulse train.

Figure 4 illustrates the high, low, and average measurements of a pulse.

The high measurement is triggered on the rising edge of the pulse and an integra-

tion 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 measurement. An average measurement is triggered on

the rising edge and the integration covers both the high and low periods of the

pulse, as specified by the average measurement time settings. The Model 2304 com-

putes one measurement parameter (high, low or average) at a time. The desired

measurement mode can be selected with the 

and 

buttons on the front panel.

Figure 4.

Pulse current measurement

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H I G H   S P E E D   P R E C I S I O N   R E A D B A C K   P O W E R   S U P P L Y

Summary of Contents for 2304a

Page 1: ...2304 MODEL 2304 QuickStart U S E R S G U I D E HIGHSPEED PRECISION READBACK P O W E R S U P P L Y...

Page 2: ...acle Inspect the connecting cables test leads and jumpers for possible wear cracks or breaks before each use For maximum safety do not touch the product test cables or any other instruments while powe...

Page 3: ...epend on the programming language used in the test environment Figure 1 Model 2304 front panel The Model 2304 has three operating display modes ACTUAL V AND I This mode reads back the actual output vo...

Page 4: ...output voltage and current limit source voltage xx xxx set output voltage xx xxx is between 0 and 20 source current limit x xxxx set output current limit x xxxx is between 0 and 5 and sense current r...

Page 5: ...of readings to average per measurement up to 10 optional command Figure 2 Rear panel of the Model 2304 Note the location of the digital voltmeter inputs 5 H I G H S P E E D P R E C I S I O N R E A D B...

Page 6: ...f using the front panel controls press the DISPLAY button and select DVM INPUT using the and buttons GPIB commands for selecting the DVM Input Mode sense function dvmeter selects voltage measurement f...

Page 7: ...a pulse The high measurement is triggered on the rising edge of the pulse and an integra tion is performed for the time specified for the high measurement The falling edge of the pulse triggers the lo...

Page 8: ...t manually from 33 s to 833ms Make sure an integration period does not extend into the wrong portion of the pulse or into the next pulse For example if the pulse is high for 600 s the high integration...

Page 9: ...OVERFLOW message will be displayed Perform the following procedure to find an appropriate trigger level Determining correct trigger level 1 Turn the output on If the trigger level is too low or too hi...

Page 10: ...nhanced output for pulsed current measurements output on turn on supply output and sense pcurrent time high xxxxxx specify integration time in sec for high pulse measurements sense pcurrent time low x...

Page 11: ...s pulsed current measurement function sense pcurrent synchronize tlevel x xxxx specify trigger level up to 5 amps sense pcurrent synchronize state off turn the trigger synchronization off sense pcurre...

Page 12: ...0 248 6168 http www keithley com Copyright 1998 Keithley Instruments Inc Printed in the U S A Part No 2304 903 01 Rev A 1 98 F A X 440 248 6168 E MAIL product_info ke i t h l e y c o m S P E C D I R E...

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