Signametrics Corporation SMU2060, Руководство оператора

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Figure 2-1: Time frame of a single measurement.
2.12.2 Range and Function Transition Times
The transition times between functions, and between ranges are important parameters. Iincluding all
permutations of all functions and ranges could be extensive. therefore, the following are few of the values
for the functions that are used the most. Most of these values depend on the set Aperture, and are
therefore more complex to calculate. It is assumed that the Read Interval is set to 0 (default). The
following numbers may vary from system to system.
Range switching within Volts DC, using DMMSetRange()
The time to switch ranges with the aperture set to 20ms or lower, is equal to 0.2 * Ap 15ms. For
all other apertures it is equal to the Ap 15.6ms.
Range switching in Resistance (2-W or 4-W), using DMMSetRange()
The time to switch ranges while the set aperture is 33.3ms and higher is equals to the Ap 13ms.
For all other apertures it is equal to 0.05 * Ap 15.5ms.
Switching between VDC and Resistance, using DMMSetFuncRange()
The transition time is 15.6ms for apertures smaller than 16.6ms, and is equal to the Ap 25ms for
all other apertures.
Switching between Ohms and IDC, using DMMSetFuncRange()
For apertures of 66.66ms and higher the function switching time is equal to 45ms + 0.51 * Aperture. For
Apertures of 16.66ms to 40ms it is 0.65 * Aperture. For all other apertures it is 7.8ms.
Switching between VDC and Capacitance, using DMMSetFuncRange()
For apertures smaller than 33.3ms the function switching time is 23.4ms. It is 0.65 * Ap 50ms for
all other apertures.
Switching between Ohms and Capacitance, using DMMSetFuncRange()
For apertures of 160ms and higher, the function switching time is 160ms. For Apertures of 33.33ms to
80ms it is 2 * Ap 35ms. For all other apertures it is 23.4ms.
Switching ranges within DC Current using DMMSetRange()
This time is 1ms if switching does not include the 240mA and 2.4A. Switching to and from these two
ranges and the other ranges takes 4.2ms for apertures of 40ms and lower, and 15.7ms for all other
apertures.
Switching Capacitance ranges using DMMSetRange()
This time is 12ms regardless of set aperture.
2.13 Source Functions (2064)

Isolated to 300 V DC from the Chassis

DMM Measures output voltage while sourcing.

Multiple SMU2064 units can be placed in series or parallel to increase output Voltage or current

Two auxiliary voltage inputs can be used to monitor UUT DC voltages while in this mode.
Signametrics
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