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corrosive to measuring instrument, and direct sunlight shall be avoided.

(5) The instrument, especially the test leads connected to the DUT, shall be kept away from

the strong electromagnetic field to avoid interference to the measurement.

1.5 Test Fixture Used

Please use the test fixture or test cable provided by our company; the test fixture or test cable

made by the user or other companies may lead to incorrect measurement results. The test fixture or
test of the instrument cable shall be kept clean and the pins of the tested device shall be kept clean
to ensure that the device under test is in good contact with the fixture.

The test fixture or test cable shall be connected to such four test terminals as Hforce, Hsense,

Lsense and Lforce on the Front Panel of the instrument. For the device under test with a shielded
enclosure, the shielding layer can be connected to the ground line of the instrument.

NOTE: When there is no Installation of test fixture or test cable, the instrument will display

an unstable measurement result.

1.6

Warm-up and Continuous Working Hours

(1) In order to ensure accurate measurement of the instrument, the warm-up time shall be no less

than 30 minutes after the instrument is turned on; the continuous working hours shall be less than
16 hours.

(2) Please do not switch the instrument frequently, which, otherwise, will cause the confusion of

internal data.

1.7 Other Characteristics of the Instrument

(1) Power consumption: less than 20W.
(2) Dimensions: 265mm * 105mm * 305mm (W *H*L).

2 Description

ET44 series desktop bridge incorporates 3.5-inch TFT display, user-friendly interface, and a

variety of measurement parameters into one body. It is convenient for users to carry out remote
control with USB and RS232 and also perform the sorting of components using handle. In
function, it can not only adjust the output frequency and test level, but also record the value of
components in the process of measurement. In the performance parameters, its basic accuracy
reaches 0.2%. This manual will take ET4410 as an example.

● Measurement frequency up to 100kHz
● Test level 100 ~ 2000mV
●Support the measurement of DC
resistance and electrolytic capacitor
●Internal

bias

voltage

output

(1mV-1500mV)
●Automatic identification of component
measurement
●3.5-inch TFT display, 5 and a half bits
display

● Support SCPI communication protocol
● Provide system settings, which can configure
language, buzzer, screen brightness, etc
according to the needs of users.
● Basic accuracy 0.2%
● Manual and automatic range
● Be equipped with open circuit and short
circuit correction
● Comparator has sorting and alarm function
● Provide a variety of test ports

Содержание ET1090

Страница 1: ...ET1090 Benchtop digital bridge...

Страница 2: ...7 Main Parameter Selection 10 4 2 8 Secondary Parameter Selection 10 4 2 9 Equivalent Mode Selection 10 4 2 10 Comparator Setting 10 4 2 11 List Scanning Function 12 4 2 12 DCR MODE 13 4 2 13 Electro...

Страница 3: ...ug of this instrument 4 The instrument has been carefully designed to reduce the clutter interference caused by the input at the AC power supply terminal However it shall be used in a low noise enviro...

Страница 4: ...rned on the continuous working hours shall be less than 16 hours 2 Please do not switch the instrument frequently which otherwise will cause the confusion of internal data 1 7 Other Characteristics of...

Страница 5: ...asurement Display Speed 2 times second slow 4 times second medium speed 8 times sec fast Internal Bias 0 1500mV adjustable 1mV stepping Test Level 100mV 300mV 600mV 1000mV 1500mV 2000mV Correction Fun...

Страница 6: ...ence 3 1 Front Panel Figure 3 1 Diagram of Front Panel SN Description 1 Power button 2 3 5 inch display 3 Test clip jack 4 Basic Function Keys 3 2 Introduction of Keys 3 2 1 Power On Off Key Power on...

Страница 7: ...n to enter the calibration state after the calibration is completed press down again to exit the calibration mode and return to the normal mode Press down to make the measurement condition bias compar...

Страница 8: ...er supply input socket 2 Voltage selector 110V 60Hz VAC or 220V 50Hz VAC 3 RS232 INTERFACE 4 USB Device interface 3 4 User Interface 3 4 1 Interface of Measurement Display Fig 3 3 Interface of Measure...

Страница 9: ...he local mode the default starting state of the instrument is the local mode 3 4 2 Interface of Measurement Setting Fig 3 4 Interface of Measurement Display 3 4 3 Interface of List Scanning Fig 3 5 In...

Страница 10: ...above The interface is as shown in Figure 4 2 Fig 4 1 Fig 4 2 4 2 2 Level Selection Step one Turn on the instrument to enter the interface of measurement display move the cursor to the level through...

Страница 11: ...0 300 1k 3k 10k 30k 100k Method two Press the key to directly switch to the next range and the cursor moves to the range area 4 2 5 Output Impedance Selection The internal resistance is the Output Imp...

Страница 12: ...e placed with the component with the similar desired nominal value Step two Press the key to open the Interface of Measurement Setting At this time the position of the cursor is at the nominal value i...

Страница 13: ...n in Fig 4 6 Fig 4 5 Fig 4 6 Method Two Step one the same as method one Step two move the cursor to the tolerance through the left and right direction keys short press the key to enter the custom tole...

Страница 14: ...enter Interface of List Scanning by means of switching the up and down switch Keys as shown in Fig 4 9 and 4 10 The List Scanning Function can carry out circulated scanning over seven groups of frequ...

Страница 15: ...key to open and take the current value as the reference value secondary parameter will display the reference value and Main parameter will display the relative value the interface is as shown in Fig 4...

Страница 16: ...ue press the second to exit the record maximum mode The interface is as shown in Fig 4 16 Fig 4 16 4 2 17Correction Function Correctio n Function Description Typical Use Model Open circuit correction...

Страница 17: ...orrection automatic identification of open circuit short circuit open circuit OPEN short circuit SHORT with the interface as shown in Fig 4 18 the number will be added 1 along with the correction prog...

Страница 18: ...tors 5 1 Measurement Parameter 1 Main parameter L inductance C capacitance R resistance Z impedance 2 Secondary parameter X reactance D loss Q quality factor impedance angle ESR series equivalent resi...

Страница 19: ...ries connection equivalent and p represents the parallel connection equivalent In general the series equivalent circuit shall be used for low value impedance elements basically high value capacitance...

Страница 20: ...tor The maximum and minimum values of the measurement parameters that affect accuracy Frequenc y Hz 100 120 200 400 800 1K 2K 4K 8K 10K Cmax 800 667 400 200 100 80 40 20 10 8 Cmin 1500 1250 750 375 18...

Страница 21: ...0 00M 20 00M 5 0 10 words 10M 4 000M 9 999M 2 0 5 words 4M 400 0k 3 9999M 1 2 3 words 400k 40 00k 399 99k 0 3 3 words 40k 4 000k 39 999k 0 2 2 words 4k 400 0 3 9999k 0 2 2 words 400 40 00 399 99 0 2 2...

Страница 22: ...on protocol refers to SCPI part 6 2 RS232 INTERFACE The RS232 connector uses 9 pin DB socket with the pin sequence as shown below Pin definition 2 pins RXD receive data 3 pins TXD send data 5 pins GND...

Страница 23: ...be maintained and repaired by professional technical personnel please do not arbitrarily replace various components within the instrument in maintenance after the maintenance a new measurement and cal...

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