Bosch EVB-BA100 Bedienungsanleitung

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The EVB-BA-100 provides a means to switch in a backup amplifier in the event of a primary amp failure. One

backup amp can be provided in reserve for several primary amps. Amplifier outputs are connected at TB2,

and speaker field wiring at TB1. Supervisory and 24 VDC power inputs are provided at TS1. The LED on-

board activates when the backup amp has been switched in. All wiring is power-limited. Mounts to

snaptrack or insulating nylon standoffs.

The EVB-BA-100 is compatible with both 25VRMS and 70VRMS audio signals.

INSTALLATION:

Mounting: The EVB-BA-100 is mounted in the same cabinet that houses the primary amplifier. It is designed

to be mounted into standard 3” snap track material. The board also has mounting holes at the corners for

stand-off mounts where necessary.

TB1:

Ter. 1 & 2 - Audio Output

TB1:

Ter. 1 - Ckt. Neg

Ter. 2 - +24 VDC

Ter. 3 - Gen Input

Ter. 4 - +24 VDC

TB2:

Ter. 1& 2 - 25/70 VRMS Audio

Input from backup amplifier

Ter. 3&4 - 25/70 VRMS Audio

Input from primary amplifier

JUMPERS:

J1: jumps TS1-2 to TS1-4

LED 1:

ON: backup audio switched in

SPECIFICATIONS:

Power: 24 VDC

Current: 40 mA Standby

10 mA Active

Fig. 1 - Board

4 3 2 1

TB1

J1

TS1

TB2

BA-100

LED

+

-

+

-

1

12

23

4

EVB-BA-100

Backup

(replacement for EVX-BA)

Audio Interface

P/N B-5030 Rev. C

Page 1 of 2

130 Perinton Parkway, Fairport, NY 11450

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