Harman Kardon DPR 1001, Руководство по обслуживанию

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B) DIGITAL INPUT, BASELINE AUDIO PARAMETERS (STEREO SURROUND MODE)
Measuring methods are based on IHF and IEC standard 268-3
Measurement conditions,unless otherwise noted :
Output resistive load =
(8) ohms / All channels loaded.
Tone Off or Tone(Bass,Treble), Balance, EQ control : Center Position , Other SW's : OFF, Volume:Max
All Voltage Measurements are made with RMS detector, unless otherwise specified.
Filter : IHF-A filter
R/O = Rated Output, which is 50 W into 8 ohm resistive load, for PCM Digital inputs.
UUT= Unit Under Test.
All measurements are made in Stereo mode, at FL and FR Speaker Output jacks, unless otherwise noted.
Power supply : 120 V , 60 Hz
UNIT
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Rated Stereo Power Output Watts/Ch 50
Rated 6 CH DIRECT Power Output Watts/Ch 50
Rated Resistive Load Ohm
8 ohm, +/- 1 %,
Non-Inductive,
455 W
Digital Input data is a 44.1 KHz sampling r ate, 16 bit, no Pr e-emphasis, PCM bitstr eam.
ⷍ
FRONT AMP SECTION
No DESCRIPTION INPUT UNIT LIMIT NOMINAL
1
Gain Difference between
Analog and Digital Input
Coaxial 1
With a 0 dBFS, 1 KHz PCM bitstream, and Main Volume at 20 dB
below Max, the Output Voltage at FL and FR speaker outputs
should be the same as when, applying a 2 Volt, 1 KHz sinewave
amplitude into an analog Stereo Input. Read the dB difference
between
dB < 2 dB < 1 dB
2 Dynamic Range Coaxial 1
With a 0 dBFS, 1 KHz sinewave PCM bitstream, and Main Volume
at 20 dB below Max, set meter to read THD+N Ampl, with dBr
units. Use 'A Weighting' filter, 10 Hz-80 KHz BW. Record the
Output Voltage at FL and FR speaker outputs to be the 0 dBr
Reference val
dB >85 > 90
3 RESIDUAL NOISE Coaxial 1
With Digital Generator amplitude at -999 dBFS (Generator turned
off), 1 KHz sinewave PCM bitstream, and Main Volume at 20 dB
below Max, set meter to read Amplitude,10 Hz-22 KHz BW. Take
Amplitude readings on both FL and FR Speaker Outputs.
mVrms <1 <0.5
4
TOTAL HARMONIC
DISTORTION
Coaxial 1 20 Hz
With a 0 dBFS, 1 KHz sinewave PCM
bitstream, and Main Volume at 20 dB below
Max, set meter to read THD+N , with % units.
Use 10 Hz-80 KHz BW. Read THD+N Ratio,
with dBr units on both FL and FR Speaker
Outputs. IHF-A FILTER
% <0.25 <0.15
FRONT "L" AND "R" SPEAKERS
CENTER SPEAKER
REMARK
LARGE/SMALL/NONE SURROUND "L" AND "R" SPEAKERS
SUBWOOFER OUTPUT
MARKETING UNIT RATINGS.
SPEAKER MULTICHANNEL AVAILABLE SPEAKER MODES
SPEAKER
FRONT "L" AND "R" SPEAKERS
SUBWOOFER OUTPUT
STEREO MODE AVAILABLE SPEAKER SETTINGS
LARGE/SMALL
YES/NO
Both FL and FR Speaker amplifiers driven and loaded with Rated
Resistive Load.
CONDITION
LARGE/SMALL
LARGE/SMALL/NONE
All seven(FL,FR,C,SL,SR ,SBL,SBR ) Speaker amplifiers driven and
loaded with Rated Resistive Load Impedance.
Resistive loads to be connected to Speaker Outputs using a 12 AWG
Stranded Speaker Wire pair for each load resistor. Wire length
should be approximately 10 feet.
YES/NO
DPR1001 harman/kardon
DETAILED SPECIFICATIONS (CONT'D)