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1582-21 Video,Audio Switch

  

The 1582-21 provides AUTO or Manual relay switching between CH1 and CH2 Video and one stereo (Left, Right) balanced audio signal. Alarm conditions on CH1 and CH2 are either detection of loss of audio (below -10 dBm) for a preset 10 to 90 seconds on CH1, CH2 Left audio (+) or contact closure (to ground or an open, selectable). Switching logic can be:

1) CH1 Prime Mode - Switches from CH1 to the CH2 only if CH1 alarms and CH2 is good. Switches back to CH1 when it is no longer in alarm or when both CH1 and CH2 are in alarm.
2) Latch to CH2 Mode - Switches from CH1 to the CH2 if CH1 alarms and CH2 is good. Latches to CH2. Push Manual Reset or ground Remote Reset pin to return to CH1 if it has no alarm.
3) Minimum AUTO switching, Initial Channel Select ( ICS) Mode - Switch stays on channel last selected by Manual or Remote selection after return to AUTO. AUTO switching occurs only if current channel alarms and other channel clear.

On power loss and when power is applied (as alarms at power up dictate), the default is always to CH1. The Manual Select switch and (when in AUTO) contact closures to Remote Select pins, select CH1 or CH2 independent of alarms. LEDs and closures indicate alarm and switch conditions for CH1 and CH2 and REMOTE or MANUAL operation. Video connectors are BNC, female. Audio connectors and contact closure inputs are via barrier strip. Dual power supplies provide redundant power to the 1582-21. The chassis is a 1 3/4”, rack mount.
 


 1582-21 Video,Audio Switch Front/Rear Panels

Equipment Specifications*
 

Switch Characteristics  
Impedance, Video
Impedance, Audio
Type
Isolation, Video
Isolation, Audio
Switch time
Insertion Loss, Video
Insertion Loss, Audio
Alarm
Switch after alarm
75 ohms
600 ohms
Relay
>65 dB to 10 MHz
>80 dB to 20 kHz
<=10 ms
<=0.5 dB
<=0.2 dB
Left audio < -10 dBm or ext closure
10 to 90 sec, 10 sec increments
Controls/Indicators
Manual Select
Switch RESET
LEDs, closures		 Manually select CH1, CH2
Resets switch to CH1 if good and switch in latch mode; Resets Remote
CH1, CH2 on-line; ALARM CH1, CH2; POWER; MANUAL; REMOTE
Other  
Connector, Video
Connector, Audio
Connector, Alarm
Mechanical
Power		 BNC, female
6-pin Barrier Strip
14-pin Barrier Strip
19" standard chassis; 1.75"H X 12"D
90-260 VAC, 47-60Hz, 30W; Redundant power supplies

*+10 to +40 degrees C; Specifications subject to change without notice