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Model 3550 LCR Meter Instruction Manual Preparation for Use
Line Voltage & Fuse Selection:
CAUTION: DO NOT APPLY POWER TO THE INSTRUMENT BEFORE READING THIS SECTION:
Unless other wise specified, the Model 3550 is delivered from TEGAM with its power supply set for
120V, 60 Hz operation. However, the 3550 design allows it to operate under 100, 120V, 220 or
240V @ 50/60 operation. It is strongly recommended that the line voltage and fuse size be
verified before powering the unit.
First, determine the supply voltage that the instrument will be operating under and verify that the
supply voltage does not fall outside of the allowable ranges in the table below:
LINE VOLTAGE RANGE FUSE SIZE
100/120V 90~132VAC 1A
220/240V 198~250VAC 0.5A
Make sure that the proper fuse size is installed.
Next, verify that the jumper block in the rear panel of the instrument is securely plugged into the
correct position. There are four positions that the block may be set to. Set the jumper block to
point to one of the four voltage settings. You can remove the jumper block by pulling it from the
jumper socket.
120V240V
220V 100V
Unit set for 120VAC Operation 50/60Hz
The instrument is ready for power up. Proceed to “Quick Start Instructions” for continued
operation.
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