Operator`s manual

Signametrics 8
1.2 Minimum Requirements
The SM2040 series of system DMMs are precision plug-in modules that are compatible with IBM type personal
computers (PCs), from the 486 to the Pentiums. They require a half-length expansion slot on the PCI bus. A mouse
must be installed when controlling the DMM from the Windows Control Panel. The SM2040 comes with a
Windows' DLL, for operation with Windows' Version 95/98/Me/2000/XP and NT4.0.
1.3 Feature Set
The base unit, the SM2040, has 6-1/2 digit performance and can be used as a general purpose DMM, giving very
accurate and stable readings. The SM2042 adds to the SM2040 with additional measurement functions not found in
other DMMs. The state-of-the art SM2044 is a superset of the SM2042, adding inductance measurement and
sourcing capabilities.
SM2040, SM2042 and SM2044 6½ Digit DMMs feature table:
Function SM2040 DMM SM2042 Multi-
Function DMM
SM2044 LCR
Sourcing DMM
DCV 4 ranges, >10 GΩ & 10 MΩ input
resistance.
√ √ √
ACV 4 ranges, 1 MΩ input √ √ √
2-Wire Ohms, six ranges 330 Ω to 33 MΩ √ plus 33 Ω,
330 MΩ
plus 33 Ω,
330 MΩ
4-Wire Ohms, four ranges 330 Ω to 330 kΩ √ plus 33 Ω plus 33 Ω range
Offset Ohms
√ √ √
DC current, four ranges 3.3 mA to 2.5 A
√ √ √
AC current, four ranges 3.3 mA to 2.5 A
√ √ √
Diode V/I characteristics at 100 ηA to 1mA √
plus 10 mA plus 10 mA
Auto range, Relative
√ √ √
Min/Max, dB and percent deviation functions
√ √ √
On board measurement buffer
√ √ √
Measurement rate: 0.2 to 1,000/sec
√ √ √
External and threshold trigger
√ √ √
Thermocouples
√ √ √
High Dynamic range; +3,300,000 counts
√ √ √
Capacitance, seven ranges, 10 nF to 10 mF
√ √
Temperature (five basic RTD types)
√ √
Frequency / Period measurement
√ √
Pulse width, pos./neg., & duty cycle
√ √
Totalizer/event counter
√ √
Variable threshold DAC; all timing measure.
√ √
Peak to Peak, Crest factor, Median
√ √
Internal DMM temperature sensor
√ √
Six wire Ohms (with force/sense)
√
Inductance, six ranges 33 µH to 3.3 H √
DCV source 0 to +/-10.0 V
√
ACV source 0 to 20 V pk-pk, 2 Hz to 75 KHz
√
DC current source, 1 nA to 12.5 mA
√
Leakage measurement
√
Synthesized resistance source
√
Extended Resistance measurements
√
In Circuit AC based Capacitance
√