Specifications

19 Signametrics
3.0 Getting Started
After unpacking the DMM, please inspect for any shipping damage that may have occurred, and report any claims
to your transportation carrier.
The DMM is shipped with the Digital Multimeter module; three floppy disks containing the various software panels
and drivers plus the calibration data specific for the unit, and this Operator's manual.
3.1 Setting the DMM
The SMX2040 series DMMs are PXI/CompactPCI Plug&Play devices and do not require any switch settings, or
any other adjustments to the DMM prior to installation. The only switches are the PXI trigger input and output
selection switches, capable of selecting one of the PXI triggers and PXI Start Trigger.
The SM40CAL.DAT file supplied with your DMM has a unique calibration record for that DMM (See
"Calibration" at the end of this manual.) When using multiple DMMs in the same chassis, the SM40CAL.DAT
file must have a calibration record for each DMM. Append the unique calibration records of each DMM into one
SM40CAL.DAT file using a text editor such as Notepad. The defalut location for the SM40CAL.DAT file is at
the root directory C:\.
3.2 Installing the DMM Module
Warning
To avoid shock hazard, install the DMM only into a chassis that has its power line connector connected to an
AC receptacle with an Earth Safety ground.
After installation, 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 chassis, causing personal injury and/or
damage to your equipment!
This module is designed for 3U PXI and CompactPCI chassis. To prevent shock hazard do not plug it into
other format chassis such as 6U without making shure that all sides of the DMM are covered.
Caution: Only install the DMM module with the power to the chassis turned OFF!
Use extreme care when plugging the DMM module(s) into a PXI or CompactPCI chassis. If possible, choose an
empty slot away from any high-speed boards (e.g. CPU or other noisy modules) or the power supply. Please be
patient during the installation process! Due to it’s shielding it is a tight fit. Watch for any interference between
the module and the chassis. Gently push the DMM into the chassis, making shure the handle is correctly located.
Once in, lock it in with the handle and tighten the top and bottom screws to secure it into the chassis. Be patient!
3.3 Installing the DMM software package
To install the DMM, turn off the PXI/CompactPCI chassis, plug in the DMM into the PXI/CompcatPCI chassis,
preferably away from the CPU or any other noisy card, than turn on the power. The first time you power up your
computer with the DMM installed, your Windows system will detect the new DMM and will open the “New
Hardware found” wizard. It will prompt you for a driver. Insert Disk1 which contains the necessary driver.
To complete the installation, run the ‘SETUP’ program provided on the Diks1. This takes care of all installation
and registration requirements of the software. If you are installing the DMM on a computer that had an SMX2040
series install in it, you should first uninstall the old software. For a clean reintallation remove all INF files
containing reference to the Signametrics DMM. Dependig on operating system, these files will be located at
Windows\inf, Windows\inf\other or WINNT\inf. The files will be named Oemx.INF where x is 0,1,2,… and/or
SIGNAMETRICSSMX2040.INF. If present, these files will prevent “Found New Hardware” wizard from
detecting the new DMM. Also, make sure you backup and remove the old calibration record (C:\SM40CAL.DAT).
3.4 DMM Input Connectors
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