Agilent Technologies 3458A Manual de Instruções descarregar pdf (Página 25)

Chapter 3 Adjustment Procedures 23

Figure 1. 4-Terminal Short

Front Terminal Offset Adjustment

This adjustment uses an external 4-terminal short. The multimeter makes

offset measurements and stores constants for the DCV, DCI, OHM, and

OHMF functions. These constants compensate for internal offset errors for

front terminal measurements.

Equipment required: A low-thermal short made of 12 or 14 gauge solid

copper wire as shown in Figure 1 on page 23.

1. Make sure you have performed the steps described previously under

"Preliminary Adjustment Procedures".

2. Connect a 4-terminal short across the front panel HI and LO Input

terminals and the HI and LO Ω Sense terminals as shown in

Figure 1 on page 23.

3. After connecting the 4-terminal short, allow 5 minutes for thermal

equilibrium.

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Agilent Technologies 3458A Manual de Instruções Página 25