Toa VX-2000SF - 3. HANDLING PRECAUTIONS

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7.2. VX-200SP-2 Connection to External Attenuator
7.2.1. 3-wire system connection
7.2.2. 4-wire system connection
SPN
Relay
Control
DC Power
Supply
(+)(–)
(–)(+)
N1
ATT CTRL
SP OUT
C
N2
(NO)
(NC)
H
C
LINE MONITOR
H
C
VX-200SP-2
Attenuator Control (ATT CTRL) relay contact capacity
Withstand voltage: 30 V DC, 250 V AC
Contact current: Under 7 A (DC), under 7 A (AC)
End-of-line unit
7.3. VX-200SZ-2 Connection to External Attenuator
Note: Only the external attenuators of 4-wire system can be used for the VX-200SZ-2.
DC Power
Supply
(–)(+)
N1
ATT CTRL
SP OUT B
C
N2
(NO)
(NC)
H
C
SP OUT A
H
C
VX-200SZ-2
Attenuator Control (ATT CTRL) relay contact capacity
Withstand voltage: 30 V DC, 250 V AC
Contact current: Under 7 A (DC), under 7 A (AC)
SPN
Relay
Control
(+)(–) SPN
Relay
Control
(+)(–)
N1
ATT CTRL
SP OUT
SPNR
C
N2
(NO)
(NC)
H
C
LINE MONITOR
H
C
VX-200SP-2
AT-603 etc.
Attenuator Control (ATT CTRL) relay contact capacity
Withstand voltage: 30 V DC, 250 V AC
Contact current: Under 7 A (DC), under 7 A (AC)
End-of-line unit
Note: This attenuator is assumed to be bypassed
when the system power is turned on.
Note: This attenuator is assumed to be bypassed
when the system power is turned on.