TOA Electronics VM-2120 instruction manual Mounting AN Optional SV-200M Surveillance Board

16. MOUNTING AN OPTIONAL SV-200M SURVEILLANCE BOARD

Caution: Leave the following work to a qualified service technician.

Be sure to switch off the power before the work.

Step 1. Set the DIP switch on the SV-200M Board as shown in the figure.

SW 1		SW 2
ON		ON
1	2	1	2

Communication with VM amplifiers

Be sure to set to ON.

SW 1 SW 2

SV-200M Board

Speaker line surveillance activation time

Speaker line surveillance activation time

SW1-1	SW1-2	SW2-1	Setting contents
OFF	OFF	OFF	Automatic activation
			disabled
ON	OFF	OFF	10 minutes intervals
OFF	ON	OFF	20 minutes intervals
ON	ON	OFF	30 minutes intervals
OFF	OFF	ON	30 minutes intervals
ON	OFF	ON	40 minutes intervals
OFF	ON	ON	50 minutes intervals
ON	ON	ON	60 minutes intervals

This setting executes failure detection by means of the "speaker line surveillance activation" signal from the external control input (SURVEILLANCE I/O 25- pin D-sub connector).

Speaker lines are automatically monitored at set time intervals.

Communications with VM (VM-2120 or VM-2240) amplifier

SW2-2	Setting contents
OFF	Disabled (communications impossible)
ON	Enabled (when SV-200M Board is
	installed in VM amplifier)

Step 2. Remove 4 screws on the amplifier rear panel and a total of 6 screws on the sides to remove the cover.

Side: M4 x 8 machine screw 3 pieces each

Rear: M3 x 6 machine screw and M3 plain washer 4 pieces

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