Agilent Technologies B1500A Guide de l'utilisateur télécharger pdf (Page 63)

100

101

Agilent B1500 User’s Guide, Edition 7 2- 15

Introduction

Rear View

WARNING There are potentially hazardous voltages (200 V for HPSMU, and 100 V for

MPSMU/HRSMU/ASU) present at the Force, Sense, and Guard terminals of

Agilent B1500A. To prevent electrical shock, the following safety precautions

must be observed during the use of the B1500A.

a. Use a three-conductor AC power cable to connect the cabinet (if used)

and the B1500A to an electrical ground (safety ground).

b. If you do not use the 1644

2B test fixture, you must install and connect an

interlock circuit that opens the Interlock terminal when the shielding

box access door is opened.

c. Confirm periodically that the interlock function works norma

lly.

d. Before touching the connections on the Force, Guard, and Sense

terminals, tu

rn the B1500A off and discharge any capacitors. If you do

not turn the B1500A off, complete all of the following items, regardless

of the B1500A settings.

•Press the

Stop key to set the module output off.

• Confirm that the High Voltage indicato

r is not lit.

• Open the shielding box access door (open the Interlock terminal).

• Discharge any capacitors connected to an SMU.

e. Warn persons working around the B1

500A abou

t dangerous conditions.

E. CMU module

The multi frequency capacitance measurement unit (MFCMU) has four coaxial

connectors, Lcur, Lp

ot, Hpot, and Hcur, for the four-terminal pair connection.

The Hcur and Hpot have to be connected together at a terminal of the device

under test (DUT). Also the Lcur and Lpot have to be connected together at the

other terminal of the DUT. Then, the guard lines of four-terminal pair must be

connected together.

CAUTION Do not apply voltage more than ±25 V to the MFCMU input terminals. Failure to

heed this caution may result in damage to the module.

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Agilent Technologies B1500A Guide de l'utilisateur Page 63

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