22. SURVEILLANCE I/O CONNECTOR FUNCTIONS
The rear panel Surveillance I/O connector* permits "Speaker Line Reference Impedance Measurement (Initial Setting)" and "Speaker Line Check" to be enabled and monitored by connected external equipment. Referring to the pin arrangement and functions, prepare the matching
* Requires installation of the optional
13 SURVEILLANCE I/O 1
Locking nut:
2514
SURVEILLANCE I/O connector pin function table
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| Signal name | IN | Signal/logic | Function/status | ||
No. |
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1 | Zone 1 short | OUT | Active Low | Zone 1 speaker line is shorted. | ||||
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2 | Zone 1 Disconnection | OUT | Active Low | Zone 1 speaker line is disconnected. | ||||
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3 | Zone 2 short | OUT | Active Low | Zone 2 speaker line is shorted. | ||||
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4 | Zone 2 Disconnection | OUT | Active Low | Zone 2 speaker line is disconnected. | ||||
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5 | Zone 3 short | OUT | Active Low | Zone 3 speaker line is shorted. | ||||
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6 | Zone 3 Disconnection | OUT | Active Low | Zone 3 speaker line is disconnected. | ||||
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7 | Zone 4 short | OUT | Active Low | Zone 4 speaker line is shorted. | ||||
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8 | Zone 4 Disconnection | OUT | Active Low | Zone 4 speaker line is disconnected. | ||||
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9 | Zone 5 short | OUT | Active Low | Zone 5 speaker line is shorted. | ||||
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10 | Zone 5 Disconnection | OUT | Active Low | Zone 5 speaker line is disconnected. | ||||
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11 | Ground fault | OUT | Active Low | Some of speaker lines are grounded. | ||||
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12 | Power amplifier failure | OUT | Active Low | Power amplifier is faulty. | ||||
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13 | Setting/checking busy | OUT | Active Low | During measurement of the speaker line | ||||
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| reference impedance (Initial setting) or during |
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| check of the speaker lines. |
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14 | Initial setting error | OUT | Active Low | The speaker line reference impedance | ||||
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| couldn't be measured successfully. |
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| (The measured impedance exceeds the |
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| expected range or is unstable.) |
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15 |
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| Not used. |
I |
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22 |
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23 | Speaker line check | IN | Check of the speaker line impedance starts. | |||||
| activation |
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24 | Speaker line initial | IN | Measurement of the speaker line reference | |||||
| setting activation |
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| impedance (Initial setting) starts. | ||||
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25 |
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| Not used. |
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