Henry-engineering AUTOSWITCH Bedienungsanleitung PDF herunterladen (Seite 2)

AUTOSWITCH MANUAL, PAGE 2

OPERATION

MANUAL MODE: To manually select between A and B source, set the SIL SEN switch to OFF.

In this mode, a maintained control input will switch from the A to the B source. If there is no control input, the A

source will be selected by default. The green LEDs indicate which audio source is active.

AUTOMATIC MODE: For automatic operation, set the SIL SEN switch to ON. In this mode, the silence sensor will

automatically switch to the B source if the A source fails, loses a channel, or if the audio level drops below the

threshold for the delay time set. The red LED indicates when the sensor has tripped; the green LEDs indicate

which audio source is active. When the A source audio returns, AutoSwitch will switch back to the A source.

The ALARM switch enables the alarm relay. If it is ON, the alarm relay will operate when the silence sensor trips.

The relay can be used to control an external alarm device or other equipment. If the ALARM switch is OFF, the

alarm relay is disabled, although the automatic audio switching function will remain active.

SPECIFICATIONS

INPUT LEVEL -6 to +4 dBu

INPUT IMPED 10K ohms bal, 5K ohms unbal

GAIN -6 to +6 dB

OUTPUT LEVEL +4 dBu nom, +24 dBu max

OUTPUT LOAD 600 ohms or higher per chan, bal

FREQ RESPONSE DC to 20 kHz, +/- 0.25dB

NOISE LEVEL 90 dB below +4 dBu output

DISTORTION .01%

MANUAL CONTROL Maintained contact closure or 5 – 24 VDC

SILENCE SENSE LEV 10 to 40 dB below normal level

SILENCE SENSE DEL 3 – 35 seconds in two ranges

ALARM RELAY SPDT dry contacts, 24VDC, 1A max

POWER INPUT 115/230 VAC, 50/60Hz, 3 W

APPROVAL City of Los Angeles Elect. Test Lab

CONSTRUCTION Steel enclosure

PHYSICAL DIMEN 5.75”w X 5.50”d X 1.60”h, 3 LBS

Specifications subject to change without notice. Rev. B 9/04

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Henry-engineering AUTOSWITCH Bedienungsanleitung Seite 2