Agilent Technologies B2201A Guide de l'utilisateur télécharger pdf (Page 51)

Agilent B2200 User’s Guide, Edition 4 2-15

Installation

Output Connections

To Make Interlock Circuit

The interlock circuit is to prevent electric shock when touching measurement

terminals. You must install an interlock circuit on shielding box to prevent

dangerous voltages when door of the shielding box is open.

Figure 2-3 shows the pin assignments of the interlock connector.

Figure 2-3 Interlock Connector Pin Assignments

WARNING Dangerous voltages of up to the maximum voltage of SMUs may be present at

force, guard, and sense terminals when the interlock terminals are shorted.

To Install Interlock Circuit

Install the interlock circuit as follows.

1. Mount two mechanical switches on your shielding box, so that the switches

close when the door of the shielding box is closed, and open when the door is

opened. For the recommended parts and the dimensions of the switch, see Figure

2-4 and Figure 2-5.

2. Use wire to connect the two switches in series between pin number 1 and 2 (or

3) of the interlock connector. See Figure 2-3.

For example, Agilent 4155/4156 is connected to the interlock circuit, it cannot force

more than ±40 V when the door is open. When door is closed, it can force more than

±40 V.

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Agilent Technologies B2201A Guide de l'utilisateur Page 51