Dream Catcher ME3000 Analog Electronics Lab 6 Скачать руководство пользователя страница 8

 
 

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ME3000 Analog Electronics        

                          

Lab 6 - 8/19  

 

                     

Appendix: Tips on How to Use the Agilent U2741A 
USB Modular Digital Multimeter 

 

Front Panel of the Agilent U2741A USB Modular Digital Multimeter 
 

 

 

Figure B-1 – Front Panel of the Digital Multimeter

 

 

Setting Up the Connection 

1.  Connect the digital multimeter to the PC using a USB cable. 

2.  Power on the digital multimeter. 

3.  Launch the 

Agilent IO Control

 and the 

Agilent Measurement Manager (AMM)

4.  The 

Select USB Device

 dialog box will appear displaying the connected 

U2741A

 devices. To 

start the application, select a 

U2741A

 device and click 

OK

 to establish the connection 

5.  The U2741A can only be operated via the USB interface. On the front panel of the U2741A, 

there are two LED indicators. The power indicator lights up once the U2741A is powered on. 
There is a system error if the indicator blinks after the U2741A is powered on. The USB 
indicator will only blink when there is data exchange activity between the U2741A and the PC. 

6.  You can control the U2741A via the 

Agilent Measurement Manager (AMM)

 for U2741A or 

via 

SCPI commands

 sent through the USB interface from your own application programs. 

7.  Launch the 

Agilent IO Control

 and 

AMM

8.  The 

Select USB Device

 dialog box will appear displaying the connected 

U2741A

 devices. To 

start the application, select a 

U2741A

 device and click 

OK

 to establish the connection. You 

may start to use the digital multimeter now. 

 

Measuring DC Voltage 

 

1.  The DC voltage measurement function of the U2741A has the following features: 

  five ranges to select: 

100 mV

1 V,

 

10 V

100 V

, and 

300 V

; or 

auto 

range 

  input impedance is 

10 MΩ

 for all ranges (typical) 

  input protection is 

300 V

 on all ranges (

HI

 terminal) 

Содержание ME3000 Analog Electronics Lab 6

Страница 1: ...signing an RF tuned amplifier ii To demonstrate AC measurements on a Class A amplifier Equipment Required i ME3000 M2 Analog Electronics Training Kit ii Digital Multimeter recommendation Agilent 34405...

Страница 2: ...gion is almost linear Two types of amplifiers can be designed tuned and untuned amplifiers An untuned amplifier has a wider bandwidth than a tuned amplifier as shown in Figure 1 A tuned amplifier cons...

Страница 3: ...between 1 MHz to 300 MHz Great care must be taken in designing an RF amplifier as most of the components will not portray ideal characteristics at radio frequencies Most of the RF Class A amplifiers...

Страница 4: ...etails 5 Use the multimeter to measure VCC applied to the transistor between terminals TP4 and GND Calculate the voltage at the transistor base using the resistive voltage divider formula CC B V R R R...

Страница 5: ...to 8 MHz in 100 kHz increments 17 Record the peak to peak voltage at the input CH 1 and output CH 2 and determine the magnitude of the voltage gain AV as a function of frequency 18 Plot the AV versus...

Страница 6: ...25 Connect the oscilloscope CH1 to TP1 and GND 26 Connect the oscilloscope CH2 to TP6 and GND 27 Set the trigger signal to CH1 28 Record the peak to peak voltage at the input CH 1 and output CH 2 and...

Страница 7: ...urrent limit to 0 5 A Next set the supply to 25 V positive supply Set the voltage to 15 V and current limit to 0 5 A Repeat the same procedure for 25 V negative supply to set the voltage to 15 V and c...

Страница 8: ...e U2741A there are two LED indicators The power indicator lights up once the U2741A is powered on There is a system error if the indicator blinks after the U2741A is powered on The USB indicator will...

Страница 9: ...make a DC voltage measurement Measuring DC Current 1 The DC current measurement function of the U2741A has the following features three ranges to select 10 mA 100 mA 1 A and 2 A or auto range input i...

Страница 10: ...he output of the function generator after the desired parameters are set 14 The U2761A is able to output five standard waveforms that are Sine Square Ramp Triangle Pulse and DC 15 You can select one o...

Страница 11: ...ch panel of the interface Table A 2 Features of the AMM Function Generator Interface No Panel Features 1 Waveform Pattern Selection Select various types of output function by clicking the buttons 2 Wa...

Страница 12: ...for Sine wave in Vrms Duty Cycle Limitations For Square waveforms the U2761A may not be able to use the full range of duty cycle values at higher frequencies as shown below 20 to 80 frequency 10 MHz 4...

Страница 13: ...to half You cannot specify the output amplitude in dBm if the output termination is currently set to high impedance The units are automatically converted to Vpp You may configure the output terminati...

Страница 14: ...he oscilloscope to the PC using a USB cable 2 Power on the oscilloscope 3 Launch the Agilent IO Control and the Agilent Measurement Manager AMM 4 The Select USB Device dialog box will appear displayin...

Страница 15: ...quisition tab Displays the time domain waveform for the oscilloscope 3 FFT Analysis tab Displays the FFT spectrum of the signal 4 Configuration summary Displays the configured functions and settings 5...

Страница 16: ...rom channel 1 channel 2 click 1 2 or press the shortcut key F5 F6 2 To toggle the channel on or off click the channel buttons on the vertical control panel or click the toolbar to toggle the channel o...

Страница 17: ...orizontal scale causes the waveform to expand or contract in the center of the screen It provides functions of Time Base Delay and Mode for the horizontal scale adjustment This is shown in Figure B 87...

Страница 18: ...n is located on the toolbar of the soft front panel 2 Click to activate the automated measurement and cursor system This will display the window as shown below Figure B 11 Soft Front Panel of the Meas...

Страница 19: ...Scale and Run Stop 1 AutoScale automatically configures the oscilloscope to best display the input signal by analyzing any waveforms connected to the channel and external trigger inputs If AutoScale f...

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