Toa VS-900 - Manual (Page 43)

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12.11.1. Exchange connection example
12.11. VS-900SC Site Connector Connection
VS-900SC
VS-900TI
Tie-Line unit
PU-200
Power
Transformer
unit
VS-900MF
VS-900TI
Tie-Line unit
VS-900MF
VS-900TI
Tie-Line unit
VS-900MF
O.A.L. O.A.L.
O.A.L. O.A.L.
O.D.L. O.D.L.
O.D.L. O.D.L.
Fiber optic cable Fiber optic cable
Audio signal line
Control signal line
Power
supply
* O.A.L. (Optical Analog Link): Optical/audio signal converter
O.D.L. (Optical Data Link):
Optical/digital signal converter
12.11.2. Power supply connection
Connect the optional PU-200 power transformer unit as shown below:
VS-900SC (figure of the inside of the front panel)
DC24 V
PU-200
To AC mains
DC 24V IN
+ - FG
FROM
PU-200
• For the optical/audio signal converter, prepare one which can transmit a 600 Ω, 0 dBm signal.
• For the optical/digital signal converter, prepare one which can convert an RS-485 signal into an optical
signal.
• Prepare the power source separately.
Connect the backup power supply, if needed, to the VS-900SC's DC input as illustrated.
Note: The backup power supply should be a UL Listed Limited Power Source or Class 2 power supply, rated
24 V DC, 0.2 A.