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Main / Changeovers (video, audio, SDI) / PCOA-3105
| PCOA-3105 series AES/EBU audiochangeover |
PROFLEX™ PCOA-3105 series AES/EBU changeovers protect the digital audio transmission line. The monitoring output provides the analog copy of the main digital output.
The automatic and manual changeover action is performed by a latching relay.
Changeover criterios:
- an input signal loss
- an audio frame frequency is beyond the PLL locking range (24~192kHz)
- an audio sub-frame parity error
- biphase encoding error
- CRC error
- user-selectable combination of the above criterios
Available modifications:
model |
rack's slots occupied |
capabilities |
| input/output type |
monitoring output |
| PCOA-3105 |
1 |
balanced |
Yes |
| PCOA-3105-1 |
1 |
unbalanced |
Yes |
PCOA-3105 simplified schematics
The relay contacts are shown in the power-off state.
PCOA-3105(-1) rear panel view
Features
- latching dry-reed relay
- signal error indication (since last minute/last hour)
- input signal loss indication: the main and the stand-by
- automatic change-over by user-configurable criterions
- presettable change-over delay (up to 9,9 sec)
- analog monitor output
- GPI inputs and outputs
- local and remote control
Technical specification
- Inputs
PCOA-3105 |
| input type |
balanced |
| connector type |
DB-25 |
PCOA-3105-1 |
| input type |
unbalanced |
| connector type |
BNC |
GPI |
MAIN/STBY/AUTO change-over mode remote selection (by grounding the relevant GPI input) |
| connector type |
clamp-on |
- Outputs
PCOA-3105 |
| output type |
balanced |
| connector type |
DB-25 |
PCOA-3105-1 |
| output type |
unbalanced |
| connector type |
BNC |
MONITOR |
| load impedance |
600 Ohm or more |
| output type |
unbalanced |
| connector type |
DB-9 |
GPO |
| connector type |
clamp-on |
Controls
| operation modes |
Auto/Main/Stby |
| errors conter (last minute/last hour) |
two-digit display |
| change-over delay |
0...9,9 sec |
Indication
LEDs |
inputs |
| MAIN |
STBY |
| input signal loss |
yes |
yes |
| biphase encoding error |
yes |
yes |
| CRC errors |
yes |
yes |
| sub-frame parity errors |
yes |
yes |
PCOA-3105(-1) frontal panel view
Óïðàâëåíèå
- MAIN – êíîïêà âûáîðà ñèãíàëà îñíîâíîãî êàíàëà
- STBY – êíîïêà âûáîðà ñèãíàëà ðåçåðâíîãî êàíàëà
- MODE – êíîïêà âûáîðà ðåæèìà ERR MONITOR MAIN / STBY ëèáî óñòàíîâêè çàäåðæêè ïåðåêëþ÷åíèÿ (ðåæèì SW DEL )
- UP / DOWN – êíîïêè óâåëè÷åíèÿ/óìåíüøåíèÿ çíà÷åíèÿ çàäåðæêè ïåðåêëþ÷åíèÿ (ðåæèì SW DEL ), èçìåíåíèÿ ñîñòîÿíèÿ ðåæèìà
Èíäèêàöèÿ
- IN USE MAIN – ñâåòîäèîä, çàæèãàíèå êîòîðîãî óêàçûâàåò, ÷òî íà âûõîä ïðîõîäèò îñíîâíîé êàíàë
- IN USE STBY – ñâåòîäèîä, çàæèãàíèå êîòîðîãî óêàçûâàåò, ÷òî íà âûõîä ïðîõîäèò ðåçåðâíûé êàíàë
- IN USE AUTO – ñâåòîäèîä, çàæèãàíèå êîòîðîãî óêàçûâàåò, ÷òî óñòðîéñòâî íàõîäèòñÿ â àâòîìàòè÷åñêîì ðåæèìå
- ERR DETECT MIN / HOUR – ñâåòîäèîäû, çàæèãàíèå êîòîðûõ ïîêàçûâàåò, ÷òî íà öèôðîâîì èíäèêàòîðå âûñâå÷èâàåòñÿ êîëè÷åñòâî ëþáûõ îøèáîê â ìèíóòó èëè ÷àñ ñîîòâåòñòâåííî
- ERR MON MAIN / STBY – ñâåòîäèîäû, çàæèãàíèå êîòîðûõ óêàçûâàåò, ÷òî íà öèôðîâîì èíäèêàòîðå âûñâå÷èâàþòñÿ îøèáêè â îñíîâíîì èëè ðåçåðâíîì êàíàëàõ ñîîòâåòñòâåííî
- SW DEL – ñâåòîäèîä, ìîðãàíèå êîòîðîãî óêàçûâàåò, ÷òî íà öèôðîâîì èíäèêàòîðå èíäèöèðóåòñÿ çíà÷åíèå çàäåðæêè ïåðåêëþ÷åíèÿ (â ñåê) è âîçìîæíî åå èçìåíåíèå ñ ïîìîùüþ êíîïîê UP / DOWN
- LOSS MAIN / STBY – ñâåòîäèîäû, çàæèãàíèå êîòîðûõ óêàçûâàåò íà îòñóòñòâèå ñèãíàëà â îñíîâíîì/ðåçåðâíîì êàíàëàõ
- BICODE MAIN / STBY – ñâåòîäèîäû, çàæèãàíèå êîòîðûõ óêàçûâàåò íà íàðóøåíèå áèôàçíîé êîäèðîâêè ïîòîêà AES â îñíîâíîì/ðåçåðâíîì êàíàëàõ
- PARITY MAIN / STBY – ñâåòîäèîäû, çàæèãàíèå êîòîðûõ óêàçûâàåò íà îøèáêè ÷åòíîñòè â îñíîâíîì/ðåçåðâíîì êàíàëàõ
- CRCE MAIN / STBY – ñâåòîäèîäû, çàæèãàíèå êîòîðûõ óêàçûâàåò íà îøèáêè êîíòðîëÿ öèêëè÷åñêîãî êîäà â îñíîâíîì/ðåçåðâíîì êàíàëàõ
The remote control and management from a PC
All the “PROFLEX” modules are remote controllable from a PC. This facility is available if a rack is fitted with a CPU module (ordered separately). |
