6 power requirements, 7 grounding requirements, 8 signal connections – B&K Precision 4079 - Manual User Manual

Page 12: 9 rs-232 connection

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2.6 Power Requirements

The Model 4076 and 4079 can be operated from any source of 100 V to 265 V AC, frequency from 48 Hz to 66 Hz. The

maximum power consumption is 50 VA. Use a slow blow fuse UL/CSA approved of 1 A as indicated on the rear panel of the

instrument.

WARNING

THE LINE POWER VOLTAGE OF THE INSTRUMENT IS NOTED ON THE AC INPUT PLUG. TO

PREVENT DAMAGE TO THE INSTRUMENT, CHECK FOR PROPER MATCH OF LINE VOLTAGE

AND PROPER FUSE TYPE AND RATING.

The instrument power fuse is located in the AC input plug. To access the fuse, first disconnect the power cord and then remove

the fuse cartridge.

2.7 Grounding Requirements

For the safety of operating personnel, the instrument must be grounded. The central pin on the AC plug grounds the instrument

when properly connected to the ground wire and plugged into proper receptacle.

WARNING

TO AVOID PERSONAL INJURY DUE TO SHOCK, THE THIRD WIRE EARTH GROUND MUST BE

CONTINUOUS TO THE POWER OUTLET. BEFORE CONNECTION TO THE POWER OUTLET, EXAMINE ALL

CABLES AND CONNECTIONS BETWEEN THE UNIT AND THE FACILITY POWER FOR A CONTINUOUS

EARTH GROUND PATH.

THE POWER CABLE MUST MEET IEC SAFETY STANDARDS.

2.8 Signal Connections

Use RG58U 50 Ω or equivalent coaxial cables for all input and output signals to and from the instrument.

2.9 RS-232 Connection

The rear panel RS-232 connector is a standard DB-9 male connector configured as a DCE. The pin assignments are defined

in the table below:

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