Installation Guide
n Provide a circuit disconnect in series with the VDC Power input. The SyncServer DC
option does not include a power switch
n The minimum recommended wire size is 14 AWG (1.5mm2) for DC power source hook
up. Don’t forget to tighten the terminal screws on the input power block.
n The VDC Power supply in the SyncServer is DC isolated. The VDC Power inputs are
polarity protected so reversed DC connections will not power the unit but will also not
harm the unit.
n Connect VDC Power to the PRI or optionally the SEC set of terminals observing correct
polarity (+, -). The SEC set of terminals has been provided for connections to a sec-
ondary power source. Note that the PRI and SEC power connections are simply diode
OR’ed, so the highest voltage source will be powering the unit.
The PRI and SEC ground terminals on the VDC Power input block are connected to the
chassis. These terminals are normally used to connect to the VDC Power return line.
Note: The 48 VDC Operation Model is supplied with two 48 VDC inputs to accommodate
input from an alternate VDC Power Source. Because of diode switching, the polarity can be
plus-plus, plus-minus, minus-plus, or minus-minus.
WARNING: VDC Power
For the 48 VDC model of the SyncServer:
n Use a disconnect device, such as a switch, with the appropriate voltage/current rating
when connecting a VDC Power source.
n Only use the unit in an restricted area.
n The screw torque on the Power Terminal Block is 4.5 to 5.3 inch pounds.
n The unit chassis must be grounded for proper safety.
AVERTISSEMENT :
Sur le 48 VDC modèle du SyncServer:
n Utilisez un dispositif de débranchement, tel qu'un commutateur, avec le classement de
tension/courant approprié en connectant une source de pouvoir de DC.
n Employez seulement l'unité dans un secteur avec l'accès limité.
n Le couple de vis sur le TB de puissance est livres de 4.5 à 5.3 pouces.
n Le châssis d'unité doit être fondu pour la sûreté appropriée
Telecommunications(Modem)Interfaces
Caution: To reduce risk of fire use only No.26 AWG (0.128mm2) or larger tele-
communications (modem) line cord if the cord supplied is not used with the apparatus.
Attention : Pour réduire le risque d'A.W.G. No.26 d'utilisation du feu seulement (0.128mm2)
ou de plus grande ligne corde de télécommunications (modem) si la corde fournie n'est pas
employée avec l'appareil.
997-01520-02 Rev. F1.......................................................................... Page 139
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