Benchmark DAC1 HDR Manual de instrucciones Pagina 54
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DAC2 Series Instruction Manual Rev C Page 54
A
udio Precision DAC2 - INTERFACE JITTER TOLERANCE FFT
10 kHz Test Tone at 0 dBFS, AES Jitter Tolerance Sweep
-140
+0
-120
-100
-80
-60
-40
-20
d
B
r
A
0 32k 2k 4k 6k 8k 10k 12k 14k 16k 18k 20k 22k 24k 26k 28k 30k
Hz
DAC2 - JITTER TOLERANCE FFT.at27
ColorSweep Trace Line Style Thick Data Axis Comment Source 2
1 2 Green Solid 4 Fft.Ch.1 Ampl Left : 100.000 Hz=Dio.Jitter Freq
2 2 Red Solid 4 Fft.Ch.1 Ampl Left : 125.893 Hz=Dio.Jitter Freq
3 2 Red Solid 1 Fft.Ch.1 Ampl Left : 158.489 Hz=Dio.Jitter Freq
4 2 Magenta Solid 1 Fft.Ch.1 Ampl Left : 199.526 Hz=Dio.Jitter Freq
5 2 Blue Solid 1 Fft.Ch.1 Ampl Left : 251.189 Hz=Dio.Jitter Freq
6 2 Cyan Solid 1 Fft.Ch.1 Ampl Left : 316.228 Hz=Dio.Jitter Freq
7 2 Green Solid 1 Fft.Ch.1 Ampl Left : 398.107 Hz=Dio.Jitter Freq
8 2 Yello w Solid 1 Fft.Ch.1 Ampl Left : 501.187 Hz=Dio.Jitter Freq
9 2 Red Solid 1 Fft.Ch.1 Ampl Left : 630.957 Hz=Dio.Jitter Freq
10 2 Magenta Solid 1 Fft.Ch.1 Ampl Left : 794.328 Hz=Dio.Jitter Freq
11 2 Blue Solid 1 Fft.Ch.1 Ampl Left : 1.00000 kHz=Dio.Jitter Freq
12 2 Cyan Solid 1 Fft.Ch.1 Ampl Left : 1.25893 kHz=Dio.Jitter Freq
13 2 Green Solid 1 Fft.Ch.1 Ampl Left : 1.58489 kHz=Dio.Jitter Freq
14 2 Yel lo w Solid 1 Fft.Ch.1 Ampl Left : 1.99526 kHz=Dio.Jitter Freq
15 2 Red Solid 1 Fft.Ch.1 Ampl Left : 2.51189 kHz=Dio.Jitter Freq
16 2 Magenta Solid 1 Fft.Ch.1 Ampl Left : 3.16228 kHz=Dio.Jitter Freq
17 2 Blue Solid 1 Fft.Ch.1 Ampl Left : 3.98107 kHz=Dio.Jitter Freq
18 2 Cyan Solid 1 Fft.Ch.1 Ampl Left : 5.01187 kHz=Dio.Jitter Freq
19 2 Green Solid 1 Fft.Ch.1 Ampl Left : 6.30957 kHz=Dio.Jitter Freq
20 2 Yel lo w Solid 1 Fft.Ch.1 Ampl Left : 7.94328 kHz=Dio.Jitter Freq
21 2 Red Solid 1 Fft.Ch.1 Ampl Left : 10.0000 kHz=Dio.Jitter Freq
22 2 Magenta Solid 1 Fft.Ch.1 Ampl Left : 12.5893 kHz=Dio.Jitter Freq
23 2 Blue Solid 1 Fft.Ch.1 Ampl Left : 15.8489 kHz=Dio.Jitter Freq
24 2 Cyan Solid 1 Fft.Ch.1 Ampl Left : 19.9526 kHz=Dio.Jitter Freq
25 2 Green Solid 1 Fft.Ch.1 Ampl Left : 25.1189 kHz=Dio.Jitter Freq
26 2 Yel lo w Solid 1 Fft.Ch.1 Ampl Left : 31.6228 kHz=Dio.Jitter Freq
27 2 Red Solid 1 Fft.Ch.1 Ampl Left : 39.8107 kHz=Dio.Jitter Freq
28 2 Magenta Solid 1 Fft.Ch.1 Ampl Left : 50.1187 kHz=Dio.Jitter Freq
29 2 Blue Solid 1 Fft.Ch.1 Ampl Left : 63.0957 kHz=Dio.Jitter Freq
30 2 Cyan Solid 1 Fft.Ch.1 Ampl Left : 79.4328 kHz=Dio.Jitter Freq
31 2 Green Solid 4 Fft.Ch.1 Ampl Left : 100.000 kHz=Dio.Jitter Freq
Graph Plot 15 - JITTER TOLERANCE FFT
This figure shows an series of FFTs that were acquired while running the AES jitter tolerance test.
Note that none of the 31 FFTs show any signs of jitter-induced sidebands. Note that the plots are
identical to the plots shown in FIGURE 8. The DAC2 shows no change in performance when the
AES jitter tolerance test is applied to the digital inputs. No jitter-induced sidebands are visible to a
measurement limit that exceeds -140 dBFS.
- DAC2 Series 1
- Safety Information 3
- Contents 4
- Features 5
- Overview 6
- New Features 7
- Expanded I/O 8
- Applications 8
- DAC1 Heritage 8
- (DAC2 HGC and DAC2 D model 9
- Quick Start Guide 10
- Direct Interfacing to Power 11
- Amplifiers 11
- Mute on Headphone 11
- Insertion (DAC2 HGC and 11
- DAC2 D model only) 11
- Front Panel 12
- Input Status Display 13
- Button Functions 14
- HGC™ Volume Control 16
- Hybrid Gain Control™ 16
- Rear Panel 17
- Outputs 20
- Internal Settings 22
- Jumpers 23
- Digital Pass Through 25
- System1™ Universal Rack 26
- Adapter 26
- Blank Rack Panel 26
- Benchmark 27
- Technologies 27
- HPA2™ Headphone Amplifier 29
- (DAC2 HGC and DAC2 D 29
- Differential Amplifiers 29
- UltraLock2™ Clock System 29
- What UltraLock™ converters 32
- Press “Install” 37
- Performance Graphs 40
- =-1.126 dB 41
- =-5.604 dB 42
- =-13.022 dB 43
- Fs = 96 kHz 44
- unweighted) 49
- Balanced Outputs 49
- - ALL OUTPUTS 51
- Balanced Outputs 52
- Graph Plot 16 - IMD 11k 12K 55
- Specifications 56
- Group Delay (Latency) 57
- Analog Audio Inputs 58
- Digital Audio Inputs 59
- Balanced Analog Outputs 60
- Unbalanced Analog Outputs 60
- Status Display 61
- AC Power Requirements 62
- Dimensions 62
- Regulatory Compliance 63
- CE Certificates of Conformity 64
- Warranty Information 65
- Benchmark Extended Warranty 66
- Notes on Warranty Repairs 66
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