TOA Electronics VM-2120 사용자 설명서
38
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
SW 1 SW 2
ON
1 2
ON
1 2
SV-200M Board
Communication with VM amplifiers
Be sure to set to ON.
Be sure to set to ON.
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).
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.
time intervals.
SW2-2 Setting
contents
OFF
Disabled (communications impossible)
ON
Enabled (when SV-200M Board is
installed in VM amplifier)
Communications with VM (VM-2120 or VM-2240) 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