1.0 Introduction
Congratulations! You have purchased a Personal Computer (PC) Plug-in instrument with analog and systems
performance that rivals the best, all-in-one box, instruments. The SM2060 and SMX2064 Digital Multimeters
(DMM’s) are easy to setup and use, have sophisticated analog and digital circuitry to provide very repeatable
measurements, and are protected to handle any unexpected situations your measurement environment may
encounter. To get years of reliable service from these DMM’s, please take a few moments and review this manual
before installing and using this precision instrument.
This manual describes the SM2060 and SM2064 DMM’s. The SMX2060 is identical to the SM2060 and the
SMX2064 is identical to the SM2064. The only difference is the bus type. The SM206X is a PCI module, while the
SMX206X is a PXI/cPCI module.
Note: In this manual, all references made to the "SM2060" are applicable to the SMX2060, and references to the
“SM2064” are applicable to the SMX2064. References to “DMM” apply to the SM2060, SMX2060, SM2064 and
SMX2064. Features unique to the SM2064 will be identified as such.
1.1 Safety Considerations
Safety Considerations
The SM2060 series of DMM’s is capable of measuring up to 300 VDC or 250 VAC across the Volt HI
and LO terminals, and can also measure common mode signals that "float" the DMM above EARTH
ground by up to 300 VDC or 250 VAC. When making common mode measurements, the majority of the
circuits inside the DMM are at the common mode voltage.
These voltages can be lethal and can KILL!
During and after installing your DMM, check to see that there are no wires or ribbon cables from
your PC trapped inside the DMM.
The DMM comes installed with four shields (bottom, top and two edge strips) that
must not be removed
for performance as well as safety reasons.
Removal of these shields and/or improper assembly of the
shields can result in lethal voltages occurring within your PC. Be sure to check your installation before
closing the cover on your personal computer.
Warning
Check to see that no loose wires or ribbon cables infringe upon any of the internal circuits of the
DMM, as this may apply measurement voltages to your computer, causing electrocution and/or
damage to your computer!
To avoid shock hazard, install the DMM only into a computer that has its power connector
connected to a power receptacle with an earth safety ground.
When making any measurements above 50 VDC or 40 VAC, only use Safety Test Leads.
Examples
of these are the Signametrics Basic Test Leads and Deluxe Test Leads, offered as an accessory with the
Signametrics DMM’s.
Signametrics
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