AT&T DEFINITY 7100 series Uživatelský manuál stáhnout pdf (Strana 31)

POWER UNITS

V1, V2, V3, XEV2, and XEV3

631AR, 631WA1, or 631DA1 Power Unit (V1, V2, and V3)

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

carrier and the port carriers

631BR, 631WB1, or 631DB1 Power Unit (V1, V2, and V3)

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

backplanes of the carriers

TN736 Power Unit Circuit Pack (V1, V2, and V3)

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Provides -5 volt dc on the backplanes of all carriers for the port circuit

packs (not required with 631DB1 Power Unit)

TN752 Power Unit Circuit Pack (V3)

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Converts -48 volt dc to -5 volt dc required by the circuit packs and

also provides 150-volt dc for neon message waiting

Should be used in conjunction with the Analog Line circuit packs that

support neon message waiting (TN746, TN769, or TN785)

WP-91153 L2 Power Supply (XEV2 and XEV3)

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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

Provides circuit breakers and EMI filtering

TN755B Power Unit (V3, XEV2, and XEV3)

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Supports applications requiring neon message waiting lamps

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AT&T DEFINITY 7100 series Uživatelský manuál Strana 31