3-5
IM 701240-01E
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App
Index
Preparations for Measurements
3.3
Installing Input Modules
WARNING
• To prevent electric shock and damage to the instrument, make sure to turn OFF
the power before installing or removing the input module.
• Check that the input cable is not connected to the input terminals before
installing or removing the input module.
• To prevent electric shock and to satisfy the specifications, make sure to put the
accessory cover plate on the slots that are not being used.
Using the instrument without the cover plate allows the dust to enter the instrument
and may cause malfunction due to the rise in temperature inside the instrument.
• If the input module happens to come out of the slot while it is in use, it may cause
electric shock or cause damage to the instrument as well as the input module. Make
sure to screw the input module in place at the two locations (top and bottom).
• Do not put your hand inside the slot, because there are protrusions along the
module guide that may injure your fingers.
Precautions to Be Taken When Using the Modules
• Do not apply input voltage exceeding the maximum input voltage, withstand
voltage, or allowable surge voltage.
• To prevent electric shock, be sure to furnish protective earth grounding of the
SL1400.
• To prevent electric shock, be sure to fasten the module screws. Otherwise, the
electrical protection function and the mechanical protection function will not be
activated.
• Do not leave the instrument connected to devices in an environment that may
be subject to voltage surges.
• When measuring high voltages using the 701250 (HS10M12) or the 701251
(HS1M16), use the isolated probe (700929), 1:1 safety cable (combination of
701901 and 701954), or differential probe (700924).
• Be sure to connect the GND lead of the differential probe (700924) to the
functional ground terminal of the SL1400. High voltage may appear at the BNC
connector of the differential probe. Be sure to connect the GND lead to the
SL1400 before connecting the probe to the parameter to be measured.
• When using the 701255 (NONISO_10M12), be sure to fasten the module
screws. Fastening the module screws activates the protection function and the
non-isolation function. It is extremely dangerous if you do not fasten the screws.
In addition, when measuring high voltage above 42 V, be sure to use the
passive probe (701940).
• The BNC part of the passive probe (701940) is made of metal. Therefore, use the
probe at 42 V or less for isolated inputs (701250 (HS10M12), 701251 (HS1M16),
701275 (ACCL, VOLT), and 701280 (FREQ)) for safety reasons. (Do not connect
voltage above 42 V to both the High and Low sides.) For non-isolated inputs
(701255 (NONISO_10M12), etc.), fasten the module screws as described before.
• When measuring high voltages using the 701267 (HV (with RMS)), use a
measurement lead 758933 and alligator clip 701954.
• The measurement category of 701267 (HV (with RMS)) when used with 758933
measurement leads and 701954 alligator clips is 400V-CAT II on the low side
and 700V-CAT II on the high side. Be careful because the overvoltage tolerance
between the low and high sides is different.
• When measuring high voltage to the 701280 (FREQ), use the isolated probe (700929).