Bose AM-30P Service-Handbuch - Seite 30

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Note: Use test mode B unless otherwise
noted. Use the AM-9P audio cable 176199
to connect test equipment to the AM-30P.
1. Gain Test
1.1 Apply a 1kHz, 100mVrms signal to the
left only, right only, center and surround
inputs.
Note: Connect both the left and right
inputs to get a center output. Connect the
left channel out of phase with respect to the
right channel to get a surround channel out
put.
1.2 Reference a dB meter to the applied
signal.
1.3 Measure the output according to the
following table.
Output
+32.4 ± 1.8dB
Left/Right
+36.8 ± 1.8dB
Center
+37.4 ± 1.8dB
Surround
2. Bass Channel Gain Test
2.1 Apply a 100Hz, 100mVrms signal to
the left and right channel inputs (in phase).
2.2 Reference a dB meter to the applied
signal. The bass channel output should be
35.8 ± 2.0dB.
2.3 Apply a 100Hz, 100mVrms signal to
the left and right channel inputs (out of
phase by 180°). The bass channel output
should be 0 ± 1.8 dB referenced to the
measurement taken in 2.2.

DECODER TEST

3. Left Channel
3.1 Apply a 210Hz, 100mVrms signal to
the left channel input only.
3.2 Reference a dB meter to the left
channel output. Measure the outputs
according to the following table.

TEST PROCEDURES

Measurement
Output
Left Channel
Center Channel
Surround Channel
Right Channel
4. Right Channel
4.1 Apply a 210Hz, 100mVrms signal to
the right channel input only.
4.2 Reference a dB meter to the right
channel output. Measure the outputs
according to the following table.
Output
Right Channel
Center Channel
Surround Channel
Left Channel
5. Center Channel
5.1 Apply a 210Hz, 100mVrms signal to
the left and right channel inputs (in phase).
5.2 Reference a dB meter to the center
channel output. Measure the outputs
according to the following table.
Output
Center Channel
Left Channel
Right Channel
Surround Channel
6. Surround Channel
6.1 Apply a 210Hz, 100mVrms signal to
the left and right channel inputs (out of
phase by 180°).
6.2 Reference a dB meter to the surround
channel output. Measure the outputs
according to the following table.
Output
Surround Channel
Left Channel
Right Channel
Center Channel
30
Measurement
0dB (reference)
≤ -12dBr
≤ -12dBr
≤ -16dBr
Measurement
0dB (reference)
≤ -12dBr
≤ -12dBr
≤ -16dBr
Measurement
0dB (reference)
≤ -20dBr
≤ -20dBr
≤ -16dBr
Measurement
0dB (reference)
≤ 20dBr
≤ 20dBr
≤ 16dBr