Installation and Basic Operation
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9
Chapter 2
2. Press the Options toolbar button (
) and then press the Quick Select tab.
Click in the name field for the Quick Select Button you wish to assign (1
through 3), and then use the Browse button to choose the name of the MCC
file containing the desired parameter settings.
3. Back in the main MultiClamp Commander panel, positioning the mouse over
the assigned Quick Select button now displays the name of the assigned MCC
file. Press the Quick Select button to load the parameter settings.
Alternatively, the Load Configuration button (
) can be pressed to load any
named MCC file.
Test the Noise
All electronic equipment generates some amount of thermal noise. Follow these steps
to measure the intrinsic current noise (“Irms”, or the root-mean-square of the current
noise) of the MultiClamp 700A:
1. Leave the CV-7A headstage in an “open circuit” configuration (i.e., nothing
should be attached to the input of the CV-7A).
2. To reduce extraneous noise, the CV-7A must be shielded. This can be
accomplished using aluminum foil, which should be
loosely
but
completely
wrapped around the headstage. Most importantly, the input of the CV-7A
should not make contact with the foil. A great alternative to foil shielding is a
metal container, such as a coffee can.
3. The shield must now be grounded to the CV-7A. Connect the small, black
grounding wire provided with your MultiClamp hardware to the gold, 1 mm
input at the rear of the headstage case. Connect the other end of the ground
wire to the foil or metal container using an “alligator” clip or other appropriate
connection.
4. In the MultiClamp Commander, check the “Irms” box beneath the
corresponding Channel meter for this CV-7A headstage. Compare the value
indicated by the meter to that listed in the table below (*5 kHz, 4-pole
Butterworth).
