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2.1 General Technical Specifications

●Power supply voltage: 220V AC ± 10%, or 110V AC ± 10%, 45-65Hz
●Working environment: 0 ~ 40

, relative humidity <80%.

●Storage environment: -10 ~ 50

, relative humidity <80%.

●Dimensions: 265mm * 105mm * 305mm (width * height* depth).
●Mass: 2.3kg.
●Power consumption: <10W

3 Quick Reference

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/off key: After connected to the power supply, press down to turn on the

instrument, pop up the key to turn off the instrument.

3.2.2 Direction Key

In the interface of measurement display, left and right keys control the cursor movement, and

up and down direction keys select parameters.

Summary of Contents for ET1090

Page 1: ...ET1090 Benchtop digital bridge...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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