Table of Contents
Advertisement
_________________________________________________________________________________________________________________
3.4.
Description of the Front Panel
In the following description of the front panel elements each element has a number (in bold)
that is related to that in Figure 1. The number is followed by the name (in uppercase letters)
written on the front panel and the type of the element (in lowercase letters). Then, a short
description of the element is given. Some elements are grouped in functional units (e.g.
PENETRATION / BUZZ unit) and are described as units regardless of the order of numbers.
(1) HEADSTAGE connector
Connector for the headstage with optional differential input. REF of the headstage
must be connected to ground (single-ended measurement) or to a reference electrode
in the bath (differential measurement), see also Figure 11.
PENETRATION / BUZZ unit
The PENETRATION / BUZZ unit consist of (2) mode switch, (3) REMOTE
connector, (4) MANUAL push button, (5) FREQUENCY potentiometer,
(47) AMPLITUDE potentiometer and (48) DURATION potentiometer.
(2) mode switch
5-position switch to set the mode of PENETRATION
CC:
The BUZZ circuit is activated (duration set by 48). To facilitate the penetration
of the cell membrane the BUZZ circuit is provided which is based on
oscillations caused by overcompensating the capacitance compensation system.
The overcompensation of capacitance compensation yields to very powerful
high-frequency (approx. 2 kHz) oscillations (see Figure 2).
PULSE: A pulse train is applied to the electrode. The pulses are positive and rectangular.
The AMPLITUDE is set by 47, the DURATION of the train is set by 48 and the
FREQUENCY of pulses within the train is set by 5.
+I
:
The maximum positive current is applied to the electrode. The DURATION is
max
set by 48.
-I
:
The maximum negative current is applied to the electrode. The DURATION is
max
set by 48.
+I
or -I
can also be used to clean the tip of the electrode by passing large amounts of
max
max
positive or negative current. The maximum current is dependent on the setting of the
current range, see also (42).
OFF:
The PENETRATION / BUZZ unit is disabled. When in OFF position the
preparation is protected from unintentional use of the unit.
___________________________________________________________________________
version 2.2
ELC-03XS User Manual
page 9
Advertisement
Table of Contents
