Bose T1 ToneMatch, Руководство по обслуживанию

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Test Procedures
Equipment required:
• T1 power supply, product code 042533
• L1 Model II power stand
• B1 bass module
• 4-wire Neutrik ® Speakon ® bass cable
• Audio Signal Generator
• Audio Analyzer
• Input/Output cables
• 1 - XLR mic test cable
• 2 - 1/4” balanced TRS test cables
• 1 - RJ45 ToneMatch system cable
• 1 - USB Cable, Type A to Type B
Test Setup
• Connect the T1 power supply to the RJ45
ethercon connector on the UUT back panel.
•
Connect the AC line cord to AC mains.
1. DSP Operational and SW Version Test
1.1 Plug in power supply, turn on unit, note
the screen display.
1.2 Turn Selector Knob to “Prefs”, turn the
left button under the LCD “Menu” to select
“Versions”, press to select. Observe code
versions. Refer to the examples below.
- DSP Firmware:1.2
- Bose presets: 1.0
- Bose scenes: 1.0
2. Channel 1 to 5 Trim LED Tests
2.1 Connect a balanced TRS cable to the
Line Input 1 jack on the T1.
2.2 Set the channel 1 trim knob, volume
knob and the master volume knob to 5.
2.3 Apply a 1kHz, -45dBV signal to the
channel 1 input.
2.4 Slowly increase the input level to
+10dBV, noting at which point the channel 1
trim LED changes from green to yellow to
red.
2.5 Verify that the channel 1 trim LED
changes color at the following levels.
• Green:
-30dBV, +/-2dBV
• Yellow: 0dBV, +/-2dBV
• Red: +8dBV, +/-2dBV
2.6 Repeat steps 2.1 to 2.5 for channels 2
and 3.
2.7 Repeat steps 2.1 to 2.4 for channels 4
and 5. Verify that the trim LEDs for channels
4 and 5 change color at the following levels.
• Green:
-33dBV, +/-2dBV
• Yellow: -3dBV, +/-2dBV
• Red: +5dBV, +/-2dBV
3. Channel 1 to 5 Pushbutton Test
3.1 Press the channel 1 CH Edit button ON.
Verify that it illuminates blue. Press the
channel 1 CH Edit button again and verify
that it is no longer illuminated.
3.2 Press the channel 1 FX Mute button ON.
Verify that it illuminates blue. Press the
channel 1 FX Mute button again and verify
that it is no longer illuminated.
3.3 Press the channel 1 Mute button ON.
Verify that it illuminates blue. Press the
channel 1 Mute button again and verify that
it is no longer illuminated.
3.4 Repeat steps 3.1 to 3.3 for channels 2
to 5.
4. Mic Input THD+N Test
4.1 Set the channel 1 trim knob, volume
knob and the master volume knob to 5.
4.2 Using a balanced XLR mic input cable,
apply a 1kHz, -20dBV input to the channel 1
input jack.
4.3 Measure the THD+N level at the channel
1 preamp out jack. Verify that it is <0.05% at
-20dBV.