AT&T DEFINITY 7100 series Bedienungsanleitung PDF herunterladen (Seite 32)

POWER UNITS (Contd)

631DA1 Power Unit (G1)

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Provides +5 volt dc 60-amp power on the backplane on the control

carrier and the port carriers

631DB1 Power Unit (G1)

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Provides -48 volt dc 8-amp and -5 volt 6-amp power on the

backplanes of the carriers

644A Power Unit (G1)

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Provides +5 volt dc 60-amp power on the backplane on the control

carrier and the port carriers of -48 volt DC powered cabinets

645B Power Unit (G1)

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Provides -48 volt dc 8-amp and -5 volt dc 6-amp power on the

backplanes of the carriers of -48 volt DC powered cabinets

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The control carrier contains one 645B Power Unit to power the circuit

packs in all slots

WP-91153 L2 Power Supply (G1)

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Provides +5 volt dc power, -5 volt dc power, -48 volt dc power, +12

volt dc power ringing voltage, and battery charge voltage for single-

carrier cabinets

Provides circuit breakers and EMI filtering

TN755B Power Unit (G1)

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Supports applications requiring neon message waiting lamps

676B Power Unit (G1)

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Provides +5 volt dc power, -5 volt dc power, -48 volt dc power, +12

volt dc power, and ringing voltage for -48 volt DC powered single-

carrier cabinets

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AT&T DEFINITY 7100 series Bedienungsanleitung Seite 32