Agilent Technologies 6634A Bedienungsanleitung PDF herunterladen (Seite 21)

Setting the DUT Power Supply Line Voltage

3 Note that each switch has two positions.

Representations of these positions are silkscreened

on the PC board next to the switches. To change the

line voltage, consult the silkscreen drawing and set

the switches accordingly.

4 Check the rating of the fuse (F1) installed in the rear

panel fuse holder and replace with the correct fuse if

necessary. Use Table 5 to determine the proper fuse.

WARNING

✸

Make sure the replacement fuse type (size) and

rating (current, speed, and voltage) is consistent

with the voltage level you are operating at. Using

a substitute fuse could result in a fire hazard.

6634B Line Voltage Settings

The 6634B supply is set at the factory for 120 volt line

power. The 6634B supply can be set to accept 100, 120,

220 or 240 volts ac input by setting the jumpers on the

power transformer as shown in Figure 5 on page 19.

1 Turn off power to the supply and disconnect the

power cord from the power source.

2 Remove the four screws that secure the two carrying

straps and outer cover.

3 Slightly spread the bottom rear of the cover and pull

it back to disengage it from the unit.

4 Locate the ac input wiring harness on the left side of

the transformer.

5 Use needlenose pliers and connect the ac input

wiring harness according to the information in

Figure 5.

Table 5 6634A fuse requirements

Line Voltage Fuse Needed Part Number

100/120 V 4 AF/250V 2110-0055

220/240 V 2 AF/250V 2110-0002

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 81 82

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Agilent Technologies 6634A Bedienungsanleitung Seite 21