Measurement's report E-MU 0202 USB test and graphs - Reference Audio Analyzer

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Test report E-MU 0202 USB (report for a pro)






Test report - general data of E-MU 0202 USB as AMP mode


Graphics setting view
Range, dB:


General results
General results
E-MU 0202 USB
Channel
Max voltage output
VRMS
dBV
Maximum current output at loaded
ohm
mA
Max power output
ohm
mW
dBm

The table shows a most important technical characteristics of E-MU 0202 USB



Test conditions
  • For record of test signals RAA was used ADC: E-MU 1616m
  • During tests RAA software-hardware measuring complex was used galvanic isolated power transformer and was excluded the effect of ground loop in the spectra



Maximum voltage output level vs load of E-MU 0202 USB as AMP mode





Table of measured characteristics

The device was tested for a long time, a method of constructing the graph and table were outdated and not suitable for direct comparison of values between different devices. The current data are the closest to "Before hard overload" as the maximum level before clipping. The latest version of the methodology uses to build on the characters of the spectra and divided into "Pure power @ class A", "Optimal power @ class AB", "Hard power @ B class" and "Before hard overload".

Now the original data to update the graph and table no. Require re-testing of the device. Re-test will be conducted only in the presence of the device in a test lab RAA.

CloseMore detailed
Reports and testing methodology is gradually updated. We try to generate the report in such a way that it would have been a single kind of report for all devices, convenient for direct comparison.

We constantly introduce new tests and improving the options for displaying graphs and parameters. It introduces different changes in reports. Because reports are generated automatically, the updates do not take much time.

In the development and implementation of new tests, new reports are more complete. To update some charts and tables may require additional time to process the raw data separately for each device.

Some devices require re-testing.



The maximum voltage level load before overload or the certain level of distortion E-MU 0202 USB
(the values of the maximum current and voltage)
Limit
Pure
Optimal
Hard
Level
VRMS
dBV
VRMS
dBV
VRMS
dBV
loaded 16 ohm
N/А
N/А
N/А
N/А
0,51
-5,81
loaded 24 ohm
N/А
N/А
N/А
N/А
0,77
-2,31
loaded 30 ohm
N/А
N/А
N/А
N/А
0,97
-0,31
loaded 50 ohm
N/А
N/А
N/А
N/А
1,40
2,93
loaded 100 ohm
N/А
N/А
N/А
N/А
1,65
4,36
loaded 200 ohm
N/А
N/А
N/А
N/А
1,82
5,18
loaded 300 ohm
N/А
N/А
N/А
N/А
1,88
5,48
loaded 600 ohm
N/А
N/А
N/А
N/А
1,94
5,78
loaded 750 ohm
N/А
N/А
N/А
N/А
1,96
5,84





Maximum current level output vs load of E-MU 0202 USB as AMP mode





Table of measured characteristics

The device was tested for a long time, a method of constructing the graph and table were outdated and not suitable for direct comparison of values between different devices. The current data are the closest to "Before hard overload" as the maximum level before clipping. The latest version of the methodology uses to build on the characters of the spectra and divided into "Pure power @ class A", "Optimal power @ class AB", "Hard power @ B class" and "Before hard overload".

Now the original data to update the graph and table no. Require re-testing of the device. Re-test will be conducted only in the presence of the device in a test lab RAA.

CloseMore detailed
Reports and testing methodology is gradually updated. We try to generate the report in such a way that it would have been a single kind of report for all devices, convenient for direct comparison.

We constantly introduce new tests and improving the options for displaying graphs and parameters. It introduces different changes in reports. Because reports are generated automatically, the updates do not take much time.

In the development and implementation of new tests, new reports are more complete. To update some charts and tables may require additional time to process the raw data separately for each device.

Some devices require re-testing.



Maximum output current level vs load at overload or achive the certain level of distortion E-MU 0202 USB
(the values of the maximum current and voltage)
Limit
Pure
mA
Optimal
mA
Hard
mA
loaded 16 ohm
N/А
N/А
32,03
loaded 24 ohm
N/А
N/А
32,03
loaded 30 ohm
N/А
N/А
32,03
loaded 50 ohm
N/А
N/А
27,95
loaded 100 ohm
N/А
N/А
16,52
loaded 200 ohm
N/А
N/А
9,10
loaded 300 ohm
N/А
N/А
6,23
loaded 600 ohm
N/А
N/А
3,23
loaded 750 ohm
N/А
N/А
2,61



Maximum power level output level vs load of E-MU 0202 USB as AMP mode





Table of measured characteristics

The device was tested for a long time, a method of constructing the graph and table were outdated and not suitable for direct comparison of values between different devices. The current data are the closest to "Before hard overload" as the maximum level before clipping. The latest version of the methodology uses to build on the characters of the spectra and divided into "Pure power @ class A", "Optimal power @ class AB", "Hard power @ B class" and "Before hard overload".

Now the original data to update the graph and table no. Require re-testing of the device. Re-test will be conducted only in the presence of the device in a test lab RAA.

CloseMore detailed
Reports and testing methodology is gradually updated. We try to generate the report in such a way that it would have been a single kind of report for all devices, convenient for direct comparison.

We constantly introduce new tests and improving the options for displaying graphs and parameters. It introduces different changes in reports. Because reports are generated automatically, the updates do not take much time.

In the development and implementation of new tests, new reports are more complete. To update some charts and tables may require additional time to process the raw data separately for each device.

Some devices require re-testing.



Maximum output power level vs load at overload or achive the certain level of distortion E-MU 0202 USB
(the values of the maximum current and voltage)
Limit
Pure
Optimal
Hard
Level
mW
dBm
mW
dBm
mW
dBm
loaded 16 ohm
N/А
N/А
N/А
N/А
0,02
-35,70
loaded 24 ohm
N/А
N/А
N/А
N/А
0,02
-32,20
loaded 30 ohm
N/А
N/А
N/А
N/А
0,03
-30,20
loaded 50 ohm
N/А
N/А
N/А
N/А
0,04
-28,14
loaded 100 ohm
N/А
N/А
N/А
N/А
0,03
-31,27
loaded 200 ohm
N/А
N/А
N/А
N/А
0,02
-35,64
loaded 300 ohm
N/А
N/А
N/А
N/А
0,01
-38,63
loaded 600 ohm
N/А
N/А
N/А
N/А
0,01
-44,03
loaded 750 ohm
N/А
N/А
N/А
N/А
0,01
-45,82





THD vs load vs output voltage of E-MU 0202 USB as AMP mode


Graphics setting view
Load, ohm:




Table of measured characteristics

Close

Measurements of E-MU 0202 USB were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The E-MU 0202 USB test was conducted as a black box test, without regard to cost and prestige. This is the basic principle for making measurements, measurement reports and developing tests in RAA.




Kuznetsov Roman
Founder of RAA



Known by the nickname romanrex
Аuthor of articles iXBT.com



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