Toa SX-2000 Series Installation User Manual
Page 23
23
37 38
39
40
41 42
42
43
44
45
46
47 48
49
50
51
52
53
SX-2000AO
Note
When the 24 V Emergency cutoff input is set to be
disabled (not usable) with the DIP switch 8 inside
the protective cover, the Emergency indicator
will not flash even if 24 V Dc supply to this input
terminal is cut off.
31. Key Lock Indicator [KEY LOCK]
lights when the output volume controls and
channel keys are locked. (See
)
32. Control Input Unit Connection Indicator [1]
Indicates "1" when the SX-2000cI is connected to
the SX-2000Ao.
33. Control Output Unit Connection Indicator [2]
Indicates "2" when the SX-2000co is connected
to the SX-2000Ao.
34. Monitor Level Meter
Indicates the sound volume level of the output
channel being monitored.
35. Monitor Level Meter Scale
lights when the monitor oN/off key (15) is set
to oN.
36. Monitor ON/OFF Indicator [LEvEL]
lights when the monitor oN/off key (15) is set
to oN.
37. Functional Earth Terminal [SIgNAL gND]
Hum noise may be generated when external
equipment is connected to the unit. connecting
this terminal to the functional earth terminal of the
external equipment may reduce the hum noise.
Note: this terminal is not for protective earth.
38. DC power Input Terminal [DC pOwER IN]
connect an optional Dc power supply unit to
this terminal. Select the Dc power supply source
with consideration given to the current power
consumption of the system the SX-2000Ao is to
be connected to. When not using a redundant
power system*, connect the [+] terminal of input A
to the [+] terminal of input B, and the [–] terminal
of input A to the [–] terminal of input B.
(refer to the Instruction manual attached to the
VX-2000DS/3000DS.)
*
A method of connecting separate power
sources to each power input or connecting the
commercial power supply and backup power
supply separately to each power input to prevent
the system from going down when a cable is
broken or power fails.
39. Control Output Terminals
[CONTROL OUTpUT 1 – 8]
relay make contact outputs.
Each contact capacity is rated at 40 V Dc for
withstand voltage, and 2 mA – 300 mA for control
current.
these terminals are controlled by the SX-2000
Setting Software. (See the separate Setting
Software Instructions, "Pattern Settings.")
40. power Feed Jumper 2 [vCC]
the supplied removable terminal plug is equipped
with a jumper.
When the jumper is attached, the circuits of
control inputs 3, 4, 7, and 8 are powered from
inside the SX-2000Ao.
removing the jumper disconnects this internal
power supply and thus requires that power be
supplied externally to the circuit. (See
of Power feed Jumper and Isolation Jumper" on
[Rear]