4 - Instrument overview
Rear Panel
12
SMU4000 Series Instruction Manual
Rear Panel
① Terminal Block
The terminal block provides rear access to the Main and Sense connections with the addition of
Guard connections.
To connect a wire, press the orange actuators of the screwless terminals, insert the connecting
wire and release the actuator to secure the connection.
Use insulated wire (solid or stranded, 0.5mm2 to 1.5mm2 (21 to 16AWG), strip length 9mm to
10mm) suitable to meet local safety standard for 300Vpeak, i.e. tri-rated 600V equipment wire
with uninsulated ferrule. Ensure there are no loose strands.
WARNING
Only ever use either the front or rear terminals, never use both at once.
Hazardous
voltages
will appear on both sets of terminals.
SMU4201 Front and Rear Terminal Blocks
, Main/ Force(F), Sense(S) and Guard(G) can be set
and operate at voltages up to 210Vpeak
Voltages
greater than 60V are deemed hazardous
voltages.
Only use test leads conforming to IEC61010-031.
Always make connections to the instrument with the OUTPUT off and in the
Open off state;
this is the only output state that completely isolates the external circuitry from the
instrument.
CAUTION
All terminals are rated to 300Vpeak with respect to earth ground. Safety will be maintained if
voltages up to 21Vpeak for SMU4001 or 210Vpeak for SMU4201, are accidentally applied
between inappropriate terminals in excess of their marked ratings. The maximum differential
between FORCE HI and SENSE HI and FORCE LO and SENSE LO should be < 2Vpeak. The SENSE
terminals are protected against accidental connection of up to 21Vpeak for SMU4001 or
210Vpeak for SMU4201 between HI & LO.
F +/- [Force] - Force terminals source or sink voltage or current, they are permanently wired in
parallel with the front panel Main HI and LO terminals.
①
②
③
⑦
④
⑤
⑥
⑧