리퍼비시 계측기
NTI Rapid-test RT-2M + Impedance Box RT-IB + Alesis RA150 Amplifier
Generator
Multitone Arbitrary:
• 2 Independent Channels
• Multitone Signal,
1 – 31 frequencies,
min. frequency spacing 5.85Hz
• Transmission Time 260 – 960ms
• Level Range -60 dBVp to +29
dBVp in 0.1 dB steps
Stepped Sweep:
• 2 Independent Channels
• Frequency Resolution
1 – 500 steps
• Frequency Range
20 Hz – 20 kHz
• Level Range -63 dBV to
+26 dBV in 0.1 dB steps
• Level Accuracy
< ±0.1 dB @ 1 kHz
Sweep/Chirp:
• 2 Independent Channels
• Frequency Range 5 Hz – 6 kHz
• Level Range -63 dBV to
+26 dBV in 0.1 dB steps
• Level Accuracy
< ±0.1 dB @ 1 kHz
Analyzer
• 2 Independent Channels
• Frequency Range
20 Hz – 20 kHz
• Level Range -80 dBVp to
+40 dBV (0.07 mV to 70.7 V)
• Level Accuracy
< ±0.1 dB @ 1 kHz
• Residual Distortion
< -86 dB @ level > -20 dBV
• Residual Noise < -100 dBV
• Residual Input Idle Channel
Noise < -18 dBrnc
• Phase Accuracy (A-B) ±1 deg
• Residual Interchannel Crosstalk
typ. < -80dB @ level > -20 dBV
• Selectable Input Impedance per
Channel 100 kohm, 600 ohm
• Phantom Power 15/48 VDC
General
• Dimensions 1 rack unit high
483 x 318 x 44 mm
(19“ x 12.5“ x 1.75“)
• Weight 7 kg (15 lbs.)
• Control Interfaces
GPIB (IEEE-488.2), RS232
• Mains Power
100 – 230VAC / 50 – 60 Hz
• Calibration interval
1 year recommended
• Operating Temperature
+5 to +45 °C (+40 to +110 F)
• Relative Humidity
< 90 % non condensing
Functions
• Level & Frequency
(full band or selective)
• Distortion
(THD, HD, IM & MT-SINAD)
• Noise & Idle Channel Noise
• Gain, Phase & Crosstalk
• PureSound Rub&Buzz
• Sound Correlation
• DTMF
Optional Measurements
• Transient Steepness
(Rub & Buzz, Sound Correlation)
Optional Measurements RT-2X
• Echo Return Loss (ERL)
• Singing Return Loss
(SRL high, low)
• Long. Convertion Loss (LCL)
• Long. Conv. Transfer Loss (LCTL)
• Return Loss (RL)
Filters:
• C-Message (ANSI)
• CCITT Psophometric (ITU O.41)
• A-Weighting (IEC 61672)
Trigger:
• Internal or External
• Threshold
Standard Software & Drivers
• RT-EVAL Evaluation Software
• National InstrumentsTM
LabViewTM and LabWindowsTMNI-VISA Drivers