Ecom MA 400 Operating Instructions Manual - page 11
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4.5 Voltage Measure
Figure 6 shows how to connect the MA 400 to measure DC voltage up to 8 volts. To activate the volts
measure function simply press the key to toggle through the functions until the volts measure
mode is reached. The input impedance of the MA 400 ≥1 meg ohm while in this mode.
Figure 6 - Measuring 0 to 28 VDC
5. Advanced Operating Modes
5.1 Auto Step/Ramp Mode
The MA 400 has the ability to step the mA output in 5% steps automatically in 5 second intervals.
It can also ramp the mA output from 4 mA to 0 mA then back to 4 mA in a linear fashion automatically.
To activate the Auto-Step/Ramp mode use the following procedure:
1) The Auto Step/Ramp function can be used in either the source mA or simulate mA mode.
Place the MA 400 in one or the other mode.
) Connect the MA 400 to the device under test.
3) Press the key once for the step mode, twice for the slow ramp mode and three times for
the fast ramp mode. With each press a small annunciator will appear on the lower left side of the
LCD indicating which one of the step/ramp modes has been selected.
4) Once enabled the step/ramp mode will run continuously until another key is pressed.
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28.11.2005 10:18:02 Uhr