HP 8903B 20 Hz to 100 kHz Audio Analyzer

The HP 8903B audio analyzer provides unparalleled versatility and performance for audio measurements from 20 Hz to 100 kHz. The HP 8903B combines the functionality of a low-distortion audio source, high-performance distotion analyzer, frequency counter, ac voltmeter, dc voltmeter, and SINAD meter into one compact package. With microprocessor control of source and analyzer, the HP 8903B can perform stimulus-response measurements (such as signal-to-noise ratio and swept distortion) automatically with no additional equipment. For ease of use, most measurements on the HP 8903B are made with only one or two keystrokes. The HP 8903B automatically tunes and autoranges for maximum accuracy and resolution. For quick identification of input signals, the analyzer counts and displays the input frequency in all ac measurement modes.

[ Features ]

Measures distortion, SINAD, signal-to-noise
Measures true-rms ac volts, dc volts, frequency
Low-distortion programmable source
rms, average, and quasi-peak detection

[ Specifications ]

System Specifications
Distortion
  Residual Distortion and Noise(the higher of):
	80 kHz BW:
		-80 dB (0.01%) or 17 uV,
                   20 Hz to 20 kHz
	500 kHz BW:
		-70 dB (0.032%) or 50 uV, 
                   20 Hz to 50 kHz
		-65 dB (0.056%) or 50 uV, 
                   50 kHz to 100 kHz
Signal-to-Noise
  Frequency Range:
	50 Hz to 100 kHz
  Display Range:	
	0 to 99.99 dB
  Accuracy:
	+/- 1 dB
  Input Voltage Range:
	50 mV to 300 V
  Residual Noise(the higher of):
	- 85 dB or 17 uV, 80 kHz BW;
        - 70 dB or 50 uV, 500 kHz BW

Source Specifications
Frequency
	Range:
		20 Hz to 100 kHz
	Resolution:
		0.3%
	Accuracy:
		0.3% of setting
Output Level
	Range:	
		0.6 mV to 6 V open circuit
	Resolution:
		0.3% or better
	Accuracy:(open circuit)
		2% of setting 60 mV to 6V,
                  20 Hzto 50 kHz;
		3% of setting 6 mV to 6 V, 
                  20 Hz to 100 kHz;
		5% of setting 0.6 to 6 mV, 
                  20 Hz to 100 kHz
Flatness(1 kHz reference):
	+/- 0.7% (+/- 0.06 dB), 20 Hz to 20 kHz; 
	+/- 2.5% (+/- 0.22 dB), 20 Hz to 100 kHz
Distortion and Noise(the higher of):
	80 kHz BW:
		-80 dB(0.01%) or 15 uV,
                   20 Hz to 20 kHz
	500 kHz BW:
		-70 dB (0.032%) or 38 uV, 
                   20 Hz to 50 kHz
		-65 dB (0.056%) or 38 uV, 
                   50 to 100 kHz
Impedence:	
	600 ohms +/- 1% or 
         50 ohms, +/- 2%, front-panel selectable
	(HP-IB programmable)
Sweep Mode:
	Log sweep with up to 500 points 
        per decade or 255 points total 
        between entered start and stop frequencies

Analyzer Specifications
Distortion
	Fundamental Frequency Range:
		20 Hz to 100 kHz
	Display Range:
		0.001% to 100% (-99.99 to 0 dB)
	Accuracy:
		+/- 1 dB, 20 Hz to 20 kHz; 
                +/- 2 dB, 20 Hz to 100 kHz
	Input Voltage Range:
		50 mV to 300 V
	Residual Distortion and Noise:(the higher of)
		80 kHz BW:
			-80 db (0.01%) or 15 uV, 
                           20 Hz to 20 kHz
		500 kHz BW:
			-70 dB (0.032%) or 45 uV, 
                           20 Hz to 50 kHz
			-65 db (0.056%) or 45 uv, 
                           50 to 100 kHz
	Supplemental Charateristics:
		3 dB Measurement Bandwidth:
			10 Hz to 500 kHz
		Detection:
			True rms or rms calibrated average
SINAD
	Fundamental Frequency Range:	
		20 Hz to 100 kHz
	Display Range:
		0 to 99.99 dB
	Residual Distortion and Noise:
		Same as listed under distortion
	Accuracy:
		+/-1 dB, 20 Hz to 20 kHz; 
                +/-2 dB, 20 Hz to 100 kHz
	Input Voltage Range:
		50 mV to 300 V
	Supplemental Characteristics:	
		Detection:	
			True rms or rms-calibrated average
		Tuning:
			Notch filter is tuned to the
                        internal source frequency.
			.
Frequency Measurement
	Measurement Range:
		20 Hz to 150 kHz (20 Hz to 
                  100 kHz in distortion and SINAD modes)
	Resolution:	
		5 digits (0.01 Hz for input 
                          frequencies < 100 Hz)
	Accuracy:
		+/- (0.004% + 1 digit)
	Sensitivity:
		50 mV in distortion and SINAD modes, 
               5.0 mV in ac level and signal-to-noise modes
Analyzer Input
	Input Type:
		Balanced (full differential)
	Input Impedence:	
		100 k ohms +/- 1% shunted by <300 pF,
                  each side to ground. (In dc-level mode 
                  the input resistance is 101 k ohms +/-1%)
	Max Input:(maximum peak input voltage, any 
                             combination of ac/dc)
		425 V peak, applied differentially or between
          either input to ground
	CMRR:
		> 60 dB, 20 Hz to 1 kHz, V(in) <2V;
                > 45 dB, 20 Hz to 1 kHz;
		> 30 dB, 20 Hz to 20 kHz

[ Ordering ]

HP 8903B Audio Analyzer Opt 001 Input/Ouput Connectors on Rear Panel Only Opt 010 or 050 400 Hz High-Pass Filter Opt 011 or 051 CCITT Weighting Filter Opt 012 or 052 CCIR Weighting Filter Opt 013 or 053 C-Message Weighting Filter Opt 014 or 054 CCIR/ARM Weighting Filter Opt 015 or 055 "A" Weighting Filter Opt 907 Front handle Kit (5061-9689) Opt 908 Rack Flange Kit (5061-9677) Opt 909 Rack Flange Kit (5061-9683) with Front Handles Opt 910 Two sets of Operation/Calibration (08903-90079) and Service Manuals (08903-90062) Opt 915 Service Manuals (08903-90062) Opt W30 Extended Repair Service Opt W32 Calibration Service

[ Key Literature ]

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