Keysight M9601A, Startup Manual, Page: 29 / 36

Keysight M9601A Startup Guide, Edition 2 29
Installing Interlock Circuit
Installing Interlock Circuit
The interlock circuit is a simple electric circuit as shown in Figure 1-5 . The circuit
electrically opens when the access door is opened, and closes when the door is
closed.
The M9601A module cannot apply high voltage over the limit when the interlock
terminals are open. The limit value is programmable, within
 42 V. To perform
high voltage measurements, the M9601A interlock terminals must be connected
to the interlock circuit installed in the measurement environment such as the
shielding box. The interlock circuit is important and necessary to prevent
electrical shock when the user touches the measurement terminals.
Figure 1-5 Interlock Circuit
WARNING
Hazardous voltage, instrument maximum output voltage may appear at the High
force, High sense, and Guard terminals if the interlock terminal is closed. To
prevent electrical shock, do
not expose these lines.
Une tension dangereuse, une tension de sortie maximale de l'appareil peut
apparaître aux bornes High force, High sense et Guard si le couvercle de
l'équipement est fermé. Afin d’éviter toute décharge électrique, n’exposez pas
ces lignes.
Shielding box
Access door
Mechanical switches
Connector-terminal
block
Interlock high
Interlock low
(Frame/chassis)
BNC
Keysight PX0101A-001 or equivalent
Insulator
Ferrule terminal