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AM700 Audio Measurement Set Service Manual
1–11
Table 1–4: Analog generator specifications (cont.)
Capabilities Description
Frequency related characteristics
Sine Wave Frequency Accuracy ±0.01%
Interchannel Phase Difference These specifications apply only if generator channels are set to Follow A.
When channels are not in follow, their relative phases are arbitrary.
High Resolution Mode ±1 degree at 1 kHz
Typically ±1 degree, 100 Hz to 20 kHz
High Bandwidth Mode Typically ±1 degree at 1 kHz; ±2 degrees at 20 kHz
Amplitude related characteristics
Full Scale Output Amplitude Ranges
(Balanced outputs with source R = 10 W nominal)
Measured into a high impedance load. Amplitudes will be
approximately 0.14 dB lower if measured across a 600 W
load when the source R = 10 W nominal.
Every 6 dB from –22.1 dBu (60.8 mV
RMS
) to +13.9 dBu (3.84 V
RMS
) plus
+20 dBu (7.75 V
RMS
), +26.0 dBu (15.45 V
RMS
), and +30 dBu (24.5 V
RMS
)
for frequencies up to 20 kHz. Maximum output is limited to +28 dBu from
20 kHz to 80 kHz.
For 600 W source impedance, all amplitudes are 6 dB lower if measured
across a 600 W load.
Maximum Generator Output Amplitude into a
600 W Load
10 Hz to 20 kHz
Source Impedance = 10 W +28 dBu
Source Impedance = 600 W +24 dBu
Minimum Output Amplitude for ±1 dB Accuracy 1 mV
Maximum Resolution
High Resolution Mode
10 Hz to 20 kHz 1 mV
High Bandwidth Mode
11.7 Hz to 80 kHz 3 mV
Amplitude Accuracy at 120 Hz, High Resolution
Generator
Normal Mode
At +13.9 dBu ±0.1 dB, typically ±0.05 dB
–16.1 dBu to +30 dBu ±0.1 dB
–34.1 dBu to <–16.1 dBu ±0.15 dB, typically ±0.1 dB
–52.1 dBu to <–34.1 dBu ±0.25 dB
Low Distortion Mode +0.2 dB to –0.0 dB relative to Normal Mode