Agilent Technologies N1022A Podręcznik Użytkownika Pobierz pdf (Strona 49)

Probing 2

To Add an R

SENSE

Resistor to an N2825A Head

N2820/1A User’s Guide 49

To Add an R

SENSE

Resistor to an N2825A Head

You can add your own R

SENSE

resistor to N2825A heads. Use

a resistor of type ±1%, 0.5W, TC ±600, thick film 2010 SMT.

The value of the precision resistor can range from 1 mW to

1MW in 1 mW increments. When selecting the resistance

value, you must observe the 500 mW maximum power rating

of the head.

1 Detach the head from the probe amplifier as explained in

“Attaching a Probe Head” on page 34.

2 Remove the four hex screws that secure the head’s cover

and remove the cover.

Figure 27 Removing the Cover

3 Change or add the R

SENSE

resistor (R1) as shown in

Figure 28.

CAUTION If you are not skilled in soldering, ask a trained assembler to change the

resistor.

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Agilent Technologies N1022A Podręcznik Użytkownika Strona 49