Agilent Technologies 54502A Manuel de service télécharger pdf (Page 92)

The DS14C88 and DS14C89 are line drivers/receivers used by the logic analyzer

for interface of terminal equipment with data communications equipment. Slew

rate control is provided on the ICs eliminating the need for external capacitors.

Power Supply

Assembly

The switching power supply provides 120 W (200 W maximum) for the instrument.

The ac input to the power supply is 115V or 230 V, -25 to + 15%. Maximum input

power is 350 VA maximum. The ac input frequency is 48 - 66 Hz.

All voltages necessary to operate the instrument are applied first to the System

Assembly. Unfiltered voltages of + 12V, -12V, + 5.2V, -5.2V and + 3.5V are

supplied to the board where they are then filtered and distributed throughout the

board and to the CRT Monitor Assembly. Filtered voltages of approximately + 5

V and + 12 V are routed through the System Assembly to the CRT Monitor

Assembly. The + 5.2 V supply is adjustable on the supply.

HP 1650B/1651B Service

Service Manual 6-5

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Agilent Technologies 54502A Manuel de service Page 92