SV-200MA Surveillance Board
SV-200MA
Designed to be built in the VM-2120/-2240 amplifiers, the SV-200MA permits monitoring of individual speaker line or power amplifier failures for status indication.
| Power Source | 24 V DC |
|---|---|
| Current Consumption | 120 mA |
| Control Input and Output | Input: No-voltage make contact input, open voltage: 3.3 V DC, short-circuit current: under 1 mA (1) Speaker line initial setting activation signal (2) Speaker line surveillance activation signal Output: Open collector output, withstand voltage: 30 V DC, control current: under 10 mA (1) Monitoring short or open of individual speaker line (zone 1 - 5) (2) Ground fault (insulation resistance: under 50 kΩ) (3) Power amplifier failures Input/Output Input: No-voltage make contact input, open voltage: 24 V DC, short-circuit current: under 60 mA Output: Open collector output, withstand voltage: 24 V DC (used with VM 24 V DC output), control current: under 20 mA (1) Speaker Zone information/selection (2) Power amplifier fault link Connector: D-sub connector (25-pin, female) |
| Failure Detection | Power amplifier failure: 20 kHz pilot tone detection Speaker line failure: 40 Hz impedance detection |
| Speaker Line Surveillance | Speaker lines are automatically monitored at set time intervals |
| Set Time | (10 - 60 min, at 10 min intervals) |
| Operating Temperature | 0℃ to +50℃ |
| Operating Humidity | Under 90% RH (must be free from dew condition) |
| Dimensions | 90 (W) × 20.6 (H) × 157 (D) mm |
| Weight | 140 g |
| Accessory | Flat cable …2 |