Agilent Technologies N1022A Guide de l'utilisateur télécharger pdf (Page 32)

32 N2820/1A User’s Guide

2 Probing

Introduction

As mentioned in chapter 1, there are three interchangeable

SENSE

probe heads: N2822A, N2824A, and N2825A. The

N2822A and N2824A heads include different internal R

SENSE

resistor values. The N2825A user- defined head does not

include an R

SENSE

resistor and is selected in situations when

you want to use your own external R

SENSE

resistor that is

mounted on your DUT. For instructions on how to attach a

probe head to the probe, refer to “Attaching a Probe

Head” on page 34. Figure 14 on page 33 illustrates the

relative merits of using the three different heads and the

method used to connect them to your DUT.

CAUTION Always wear an ESD wrist strap when working with active probes. Not

doing so can result in the probe becoming permanently damaged.

Probe Leads The probe heads do not come with the leads soldered on

them. Instead, you must solder on the appropriate leads as

described in “To Attach the Sensor Leads” on page 44. You

can use any of the following leads:

■ Accessory un- socketed leads (22 AWG).

■ Accessory socketed leads (22 AWG).

■ Your own leads.

The socketed leads are designed to plug directly onto the

following items:

■ Standard PC board headers with 2.54 mm (0.1”)

contact- pitch spacing.

■ MBB accessory headers mounted on the PC board. You

can quickly snap the socketed lead on and off the MBB

header.

Dynamic Range Refer to “Dynamic Range” on page 24 to learn how the

selection of the R

SENSE

resistor affects dynamic range.

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 81 82

Pas de commentaire

Agilent Technologies N1022A Guide de l'utilisateur Page 32