Asus D2 User Manual

Xonar D2  
7.1 Channel Audio Card  
192KHz/24Bit DuplexHDTM  
Featuring Dolby® and DTS® Technologies for Home  
Entertainment  
RMAA 6.0.5 Test Guide and  
Results  
Revision: 1.1  
Date: Aug. 10, 2007  
ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
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4. Go to the Mixer Recording page and select “ALT” as the recording source. Click “Reset” to  
make sure the recording volume is on the default highest level (0dB). This is actually a  
high-quality onboard loop-back path from the Line-out directly to the Line-In. This  
allows you to get realistic output and input quality ratings for the Xonar D2 audio card.  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
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Note: You may also choose to use an external 3.5mm line cable as follows (as short as  
possible) to connect the Front-Out jack to the Line-In jack for loop-back testing. In that  
case, please select “Line In” as the recording source on the mixer page. However, this  
external cable may cause unexpected performance drop depending on its cable quality.  
3.5mm Line Cable  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
5. Click “Reset” on the playback volume mixer page to keep the volume setting on default.  
6. Turn the master volume to the MAX level (0dB)  
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2. Configuration and Test with RMAA  
Start RMAA and follow the setup procedure below.  
1. Select the playback device as “[DirectSound]ASUS Xonar D2 Audio” (or [MME] ASUS  
Xonar D2 Audio) and recording device as “[MME] ASUS Xonar D2 Audio. (Please also  
mind that NOT to select ASUS Xonar D2 Audio Converter, which is for ALT and PMP  
purpose.)  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
2. Select 24bit and 48KHz for the test signals. (If you change the format here, please  
remember to go back to set the SAME sample rate output in the Xonar D2 Audio Center.  
Please mind that Xonar D2 currently supports 44.1K, 48K, 96K, and 192KHz. 88.2K,  
176.2KHz, and 32bit(float) tests are not supported.)  
3. Click the General test options in RMAA and make sure “Analyze noise and distortion only  
in 20Hz-20KHz range” (audio in-band for human hearing) is selected.  
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4. It’s recommended by RMAA to ignore the two tests: “Frequency response (swept sine)”  
and “Total harmonic distortion (set of tones), which are for speaker test primarily.  
5. Click loop-back playback/record test button  
.
6. Check that the Adjusting level window shows that the levels are OK (the level meter will  
be green). Begin the test by clicking the “Start test” button.  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
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If the recording volume level is not high enough, please check and make the WAVE and  
Master Volume have been at the maximum level; Instead, if the recording volume level is  
too high, please lower the WAVE and Master volumes gradually until the level is ok. If you  
cannot get the level to be “OK” after the previous step, click “Start test” to try anyway.  
After starting test, there will be a pop-up progressing bar and please wait a few seconds.  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
7. Select one empty slot to save the data and you may change the name. Then click “OK.  
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8. RMAA will pop up the Test results window. You can click the “Select” checkbox and click  
to “Make html report.  
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9. Check and key in the report name/options as follows and then click “OK.  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
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3. RMAA Testing Results  
The following tables copied from RMAA disclosed the complete test data results for  
DirectSound_16bit, DirectSound_24bit, MME_16bit, and MME_24bit. Each table contains  
44.1K, 48K, 96K, and 192 KHz sample rate tests. Generally speaking, Xonar D2 can achieve  
up to 116dB SNR for 24-bit and up to 102dB SNR for 16bit in RMAA loop-back test. Most  
important, all results can get “Excellent” general performance credits. (Please note that  
though Xonar D2 has good anti-noise design, the test results may have slight deviation on  
different PC platforms due to the various levels of system noise interferences and distortion,  
especially for 24-bit 116dB-high sensitive quality.)  
DirectSound 16-Bit Test Results  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
DirectSound 24-Bit Test Results  
MME 16-Bit Test Results  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
MME 24-Bit Test Results  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
4. HTML Test Reports  
You can review the HTML report including the graphics for the test plots. Open the html file  
you created and saved in the test above (section 2), and it will display the report with both  
data and plots in your browser. The following report is an example and you can see how  
high-fidelity and crystal-clean the Xonar D2 audio card is for both output and input (one of  
the world’s finest sound cards, it has even higher quality than most CE devices.) You can  
also try testing the performance for other sample rates and bit-depths with the same  
procedure.  
RightMark Audio Analyzer test report  
Testing device  
Sampling mode  
Interface  
ASUS Xonar D2 Audio  
24-bit, 48 kHz  
DirectSound  
Testing chain  
RMAA Version  
External loopback (line-out - line-in)  
6.0.5  
20 Hz - 20 kHz filter  
Normalize amplitude  
Mono mode  
ON  
ON  
OFF  
Calibration singal, Hz  
Polarity  
1000  
inverted/correct  
Summary  
Frequency response (from 40 Hz to 15 kHz), dB  
+0.08, -0.04  
-116.3  
Excellent  
Excellent  
Excellent  
Excellent  
Excellent  
Excellent  
Excellent  
Noise level, dB (A)  
Dynamic range, dB (A)  
THD, %  
116.2  
0.0003  
-105.0  
THD + Noise, dB (A)  
IMD + Noise, %  
0.0009  
-115.3  
Stereo crosstalk, dB  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
IMD at 10 kHz, %  
0.0005  
Excellent  
General performance  
Excellent  
Frequency response  
From 20 Hz to 20 kHz, dB  
From 40 Hz to 15 kHz, dB  
-0.11, +0.09  
-0.04, +0.08  
Noise level  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
Left  
Right  
-115.2  
-116.4  
-93.2  
-0.0  
RMS power, dB  
-115.0  
-116.2  
-92.8  
-0.0  
RMS power (A-weighted), dB  
Peak level, dB FS  
DC offset, %  
Dynamic range  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
Left  
Right  
+115.0 +115.1  
+116.2 +116.3  
Dynamic range, dB  
Dynamic range (A-weighted), dB  
DC offset, %  
-0.00  
-0.00  
THD + Noise (at -3 dB FS)  
Left  
Right  
THD, %  
+0.0003 +0.0003  
+0.0005 +0.0005  
+0.0006 +0.0005  
THD + Noise, %  
THD + Noise (A-weighted), %  
Intermodulation distortion  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
Left  
Right  
IMD + Noise, %  
+0.0010 +0.0009  
+0.0005 +0.0004  
IMD + Noise (A-weighted), %  
Stereo crosstalk  
Left  
Right  
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ASUS Xonar D2 Audio Card  
RMAA6.0.5 Test Guide V.1.1  
Crosstalk at 100 Hz, dB  
Crosstalk at 1000 Hz, dB  
Crosstalk at 10000 Hz, dB  
-116  
-112  
-114  
-112  
-115  
-112  
IMD (swept tones)  
Left  
Right  
IMD + Noise at 5000 Hz,  
IMD + Noise at 10000 Hz,  
IMD + Noise at 15000 Hz,  
0.0006  
0.0005  
0.0005  
0.0006  
0.0005  
0.0005  
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