Ingeniero

The Model 1121 Audio Analyzer is an enhanced version of our
Model 1120. The 1121 incorporates: selectable output impedances
of 50, 150 and 600 ohms, 16 volt rms output, additional
0.3 millivoltfull scale measurement range, and quasi-peak
detection. It can be used as a direct replacement in an 1120 application.
The 1121 instrument automatically tunes and autoranges
for maximum accuracy andresolution. Distortion, frequency
response, AC and DC voltage measurements are a single
keystroke away. The instrument is ideally suited for stimulus
response applications because of an on-boardlow-distortion
audio source. Internal control of the source and analyzer allows
for swept measurements.
For the accurate measurement of complex waveforms and
noise, the audio analyzer uses true RMSaverage or quasi-peak
detection. Accurate distortion measurements can be made to
-90 dB (0.003%) between 20 Hz and 20 kHz. Over the same
frequency range, flatness measurements are possible to 0.05dB (0.5%). The audio analyzer precision reciprocal counter
gives fast and accurate characterization of audio frequencies.
• Frequency Range, 10 Hz to 200 kHz
• Measurement level, 300μV to 300 V fs• Low distortion audio source for testing systems, amplifiers,
receivers and components
• Non-volatile memory for instant recall of up to 99 complete
front panel setups
Specifications
FrequencyMeasurement
Range 5 Hz to 200 kHz
Resolution
0.001 Hz 5.000 Hz to 199.999 Hz
0.01 Hz 200.00 Hz to 1999.99 Hz
0.1 Hz 2.0000 kHz to 19.9999 kHz
1.0 Hz 20.000 kHz to 199.999 kHz
Accuracy Timebaseaccuracy + 1 count
Sensitivity
5.0 mV in the Frequency mode 50.0 mV in the Distortion & SINAD modes
Timebase
Type 10 MHz TCXO
Accuracy ±1 ppm yr
AC Level Measurement
Ranges (full scale) 300.0V, 30.00 V, 3.000 V, 300.0
mV, 30.00 mV, 3.000 mV, and
0,300 mV
Overrange 33% except on 300 V range
Accuracy
± 1%, 50 Hz to 50 kHz 1 mV to 300 V, 0.5% typ.
± 2%, 20 Hz to 100 kHz 1 mV to 300...