3-6
IM 720120-01E
3.3 Installing
Modules
WARNING
• To prevent electric shock and damage to the instrument, make sure to turn OFF
the power before installing or removing an input module.
• Check that the input cable is not connected to the input terminals before
installing or removing an input module.
• To prevent electric shock and to satisfy the specifications, make sure to put the
accessory cover panel on the slots that are not being used. Otherwise, dust may
enter the instrument and may cause malfunction due to a rise in the internal
temperature.
• If an 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 or the input module. Make
sure to screw the input module in place at the two locations (top and bottom).
• There are protrusions in the slot. Do not put your hand in the slot. If you put your
hand in the slot, the protrusions may cut your hand.
• Use the accessories of this product within the rated range of each accessory
(see page vi). When using several accessories together, use them within the
specification range of the accessory with the lowest rating.
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
instrument.
• 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.
• Avoid continuous connection under an environment in which the surge voltage
may occur.
• To measure high voltage with the 720210 (HS100M12), 720211 (HS100M12),
701250 (HS10M12), 720250 (HS10M12), or 701251 (HS1M16), use the
isolated probes (700929, 701947), passive probes 702902, or 1:1 safety cables
(combination of 701901 and 701954).
• If you are 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, if you are 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 (720210 (HS100M12), 720211
(HS100M12), 701250 (HS10M12), 701251 (HS1M16), 701260 (HV (with RMS)),
701275 (ACCL/VOLT), or 701281 (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.
• If you are measuring high voltages using the 701267 (HV (with RMS)), or
720268 (HV (AAF, RMS)), use the measurement leads (combination of 758933
and 701954) or 1:1 safety cables (combination of 701904 and 701954).
• The measurement category of 701267 (HV (with RMS)) when used with 758933
measurement leads or 701904 1:1 safety cables, 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.
• To measure high voltage with the 701281 (FREQ), use an isolated probe (700929,
701947), or passive probe 702902.