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AA5001: Difference between revisions
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It is intended to be used in conjunction with the [[SG5010]]. | It is intended to be used in conjunction with the [[SG5010]]. | ||
The '''DA4084''' is a modified variant of the AA5001 that replaces IM measurement with a SINAD function for radio equipment maintenance and characterization. The THD+N measurement of the regular AA5001 fails to measure signals with more than | The '''DA4084''' is a modified variant of the AA5001 that replaces IM measurement with a SINAD function for radio equipment maintenance and characterization. The THD+N measurement of the regular AA5001 fails to measure signals with more than 30% noise content accurately because the autotuning of the notch filter will fail at these high noise levels. The SINAD function in the DA4084 performs the same measurement as THD+N but uses additional circuitry to lock the internal notch filter onto the audio tone at a low noise signal, and then maintains this lock for high noise signals up to 50%, which is sufficient for normal SINAD testing to find radio receivers' sensitivity levels. The DA4084 features an 'UNLK' indicator that illuminates when the lock to the fundamental signal is lost. | ||
The DA4084 was supplied in a modified [[TM5003]] rack with an unusable left slot and a linear regulating power supply, but also works in generic TM5000 mainframes. | The DA4084 was supplied in a modified [[TM5003]] rack with an unusable left slot and a linear regulating power supply, but also works in generic TM5000 mainframes. | ||
The Army designation for this combination (DA4084 and special power supply) is TS-4084/G. | The Army designation for this combination (DA4084 and special power supply) is TS-4084/G. | ||
{{ | {{BeginSpecs}} | ||
{{Spec | Input Impedance to GND | 100 kΩ // 200 pF }} | |||
{{Spec | Input Ranges | 200 μV to 200 V}} | |||
{{Spec | Maximum Input Voltage | 300 V<sub>p-p</sub>V, 200 V<sub>RMS</sub>}} | |||
{{Spec | Level Accuracy | 2% ±1count (20 Hz to 20 kHz), 4% ±2count (1 Hz to 100 kHz)}} | |||
{{Spec | Bandwidth | 1 Hz to 300 kHz}} | |||
{{Spec | THD Fund. Frequency Range |10 Hz to 100 kHz}} | |||
{{Spec | THD Min. Input Amplitude | 60 mV (-22dBm)}} | |||
{{Spec | THD Accuracy| ±10% (for harmonics ≤ 100 kHz}} | |||
{{Spec | THD / SINAD max SINAD level | | |||
* AA5001 30% | |||
* DA4048 50%}} | |||
{{Spec | Residual THD | ≤ 0.01% (no filter)}} | |||
{{EndSpecs}} | |||
==Links== | ==Links== | ||