Audio Precision AP 517, Installation Instructions Manual

Page: 78 / 92

76 APx PDM I/O Module for B Series: Specifications
PDM
MODULATOR: ORDER 4, 512x OSR
Overload Point OLP 1 kHz –8.2 dBFS
Total Harm. Dist. + Noise
@OLP; BW = 0.45 F
S
–130 dB
Signal-to-Noise Ratio SNR
@OLP; BW = 0.45 F
S
129 dB
Dynamic Range DNR
@MIL; F
S
= 48 kHz; per AES17
137 dB
MODULATOR: ORDER 5, 512x OSR
Overload Point OLP 1 kHz –10 dBFS
Total Harm. Dist. + Noise
@OLP; BW = 0.45 F
S
–128 dB
Signal-to-Noise Ratio SNR
@OLP; BW = 0.45 F
S
127 dB
Dynamic Range DNR
@MIL; F
S
= 48 kHz; per AES17
137 dB
RECEIVER
Decimated Rate
F
S
0.160 768 kHz
Bit Clock Rate
F
B
Master or slave mode 0.128 24.576 MHz
DECIMATION FILTER
Decimation Ratio (FB/FS) DECR
1, 3.125, 4, 6.25, 8.00, 8.33, 10.67,
12.5, 16, 16.67, 18.75, 21.33, 24,
25, 32, 33.33, 37.5, 42.67, 48, 50,
64, 66.67, 75, 85.33, 96, 100, 128,
150, 192, 200, 256, 300, 384, 400,
512, 500, 768, 800
1 800
Passband Frequency Range All DECR except DECR = 1 0 0.45
F
S
DECR = 1 0 0.5
F
B
Passband Gain
DECR = 1, 4, 8, 16, 32, 64, 128,
256, 512
–0.001 +0.001 dB
All other DECR –0.005 +0.005 dB
Stopband Frequency Range All DECR except DECR = 1 0.55 DECR/2
F
S
Stopband Attenuation All DECR except DECR = 1 120 dB
Parameter Symbol Test Conditions Min Typ Max Unit