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3700 SERIES USER MANUAL
3700 Series Programmable DC Electronic Load
VERSION 2.0 2006.03
ii
The following general safety precautions must be observed during all phases of operation, service, and repair of
this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates
safety standards of design, manufacture, and intended use of the instrument. The manufacturer assumes no liability
for the customer’s failure to comply with these requirements.
Attention
I. Safety
1. Users should operate according to this manual.
2. There is high voltage inside the instrument, please avoid touching it directly.
3. Please read the user manual carefully before you use the instrument to assure your safety.
4. Ground the Instrument
This product is provided with a protective earth terminal. To minimize shock hazard, the instrument chassis and
cabinet must be connected to an electrical ground. The instrument must be connected to the AC power supply mains
through a three-conductor power cable, with the third wire firmly connected to an electrical ground (safety ground)
at the power outlet.
5.Keep Away From Live Circuits
Operating personnel must not remove instrument covers. Component replacement and internal adjustments must
be made by qualified service person. Do not split the components when power cable connected.
Under certain conditions, dangerous voltages may exist even with the power cable removed. To avoid injuries,
always disconnect power, discharge circuits and remove external voltage sources before touching components.
6.Do Not Substitute Parts or Modify Instrument
Because of the danger of introducing additional hazards, do not install substitute parts or perform any
unauthorized modification to the instrument. Return the instrument to a qualified dealer for service and repair to
ensure that safety features are maintained.
II. Connecting the power line
1. Inspect the power selection switch on the back panel, to assure if the selected voltage is the same as
environment power voltage. If not, please refer to the notice around the power plug.
2. Before connecting the power supply, please be sure that the switch on the front panel should be in the off
position.
3. Connect the power cable to the AC in the power supply and the 3 connector plug. Please be sure that the AC
power supply is grounded.
4. Press the switch on the front panel to switch on the instrument and you can start to use it.
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