Specifications (continued), Audio analyzer (continued) phase, Smpte imd – Atec Agilent-U8903A User Manual
Page 12: Graph mode, Audio filters

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Specifications (continued)
Audio analyzer (continued)
Phase
Accuracy
< 20 kHz
< 100 kHz
± 2 °
± 4 °
Minimum input
1 mV (S/N > 40 dB)
Resolution
0.01 °
SMPTE IMD
Residual IMD
≤ 0.0025% (–92 dB)
Graph mode
Size/acquisition length
256, 512, 1024, 2048, 4096, 8192, 16384, 32768
Window
Rectangular, Hann, Hamming, Blackman-Harris, Rife-Vincent 1 and 3, Flattop
Amplitude accuracy (flattop window)
± 0.1 dB (± 1.2%)
Display mode
Time
domain
Frequency
domain
Normal, interpolate, peak, absolute value
Displays highest FFT bin between graph points
Audio filters
Low pass filter
• 15 kHz low pass
• 20 kHz low pass
• 30 kHz low pass
• User-defined
1
High pass filter
• 20 Hz high pass
• 100 Hz high pass
• 400 Hz high pass
• User-defined
1
Weighting filter
• A-weighting (ANSI-IEC “A” weighted, per IEC Rec 179)
• CCIR 1K weighted (CCIR Rec. 468)
• CCIR 2K weighted (Dolby 2K)
• C-Message (C-Message per IEEE 743)
• CCITT (ITU-T Rec. O.41, ITU-T Rec. P.53)
• User-defined
1
1. User-defined filters can be uploaded through standard I/O connections.