
– 31 –
| Adjustment Items and Procedure |
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2. IC Level Adjustment |
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| 1. Using *I2C bus encoder, set the |
| *I2C bus encoder |
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| 2. Enter NT double speed | * |
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| tude |
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| 2.0 ± 0.02 |
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| $ | 100 IRE |
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| 10 IRE | |||
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| 10 IRE |
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| 100 IRE | B | ||||||||||||||
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| GND |
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| 2.7 ± 0.02 V |
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| Use TP5201, |
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| TP5401 and TP5601 |
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| 10 IRE | ||||||||||||
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| as reference GND |
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| respectively. |
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1) | R channel |
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| * A : |
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| * DC power |
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| * TP5211 [RLBS] |
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| 1. Using *DC power, apply 0V to *TP5211. |
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| TP5207 is ref. GND |
| * B : |
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| * TP5203 |
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| * Oscilloscope |
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| * TP5203 | * RV5205 [R. GAIN] |
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| 2. Connect *oscilloscope to *TP5203, and adjust *RV5205 so |
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| that 10 IRE ~ 100 IRE (A) becomes |
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| * TP5411 [GLBS] | * RV5201 [R. BIAS] |
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| 3. Adjust *RV5201 so that the forward 10 IRE ~ reverse 10 IRE |
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| TP5407 is ref. GND |
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| (B) becomes |
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| * TP5202 |
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| 4. Confirm that a difference in voltage amplitude of forward 10 |
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| * TP5204 |
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| 10 IRE |
| IRE ~ 100 IRE and forward 10 IRE ~ reverse 10 IRE between |
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| * TP5203 |
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| waveform at *TP5202,*TP5204 and waveform at *TP5203 is |
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| within ±150mV. |
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2) | G channel |
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| 100 IRE | B |
| * DC power |
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| 1. Using *DC power, apply 0V to *TP5411. |
| * Oscilloscope |
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| * TP5403 |
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| 2. Connect *oscilloscope to *TP5403, and adjust *RV5407 so |
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| that 10 IRE ~ 100 IRE (A) becomes |
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| * TP5403 |
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| 10 IRE |
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| 3. Adjust *RV5403 so that the forward 10 IRE ~ reverse 10 IRE |
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| (B) becomes |
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| * TP5402 | * RV5407 [G. GAIN] |
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| 4. Confirm that a difference in voltage amplitude of forward 10 |
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| * TP5404 |
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| IRE ~100 IRE and forward 10 IRE~ reverse 10 IRE between |
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| * RV5403 [G. BIAS] | * A : 1.35 | ± |
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| * TP5403 |
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| waveform at *TP5602, *5604 and waveform at *TP5603 is |
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| * B : 6.10 | ± |
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| within ±150mV. |
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