ELC-01MX User Manual
version 2.6
page 14
(14) COMM. INP. ÷10 mV connector
Please see below (Voltage Clamp Unit)
(15) HEADSTAGE connector
Connector to attach the HEADSTAGE via a flexible cable.
Voltage Clamp Unit
The voltage clamp unit consists of (14) COMM. INP. /10 mV connector, (16, 17)
AMPL and T.CONST. trim-pots, (18) HOLD. POT. (mV) switch and (19) HOLD. POT.
(mV) potentiometer.
(14) COMM. INP. ÷10 mV connector
BNC connector for an external command in VC mode (sensitivity: ÷10 mV, i.e. 100 mV
signal at this connector generates a command of 10 mV) or in VCx10 mode (sensitivity:
x1 mV, i.e. 100 mV signal at this connector generates a command of 100 mV). The
signal form remains unchanged.
(16) AMPL. trim-pot / T.CONST. trim-pot
Trim-pots for compensating for the electrode capacity in VC mode.
A square shaped command pulse in VC will be distorted by the electrode capacity. The
shape of the command can be influenced by these trim-pots in order to get the command
pulse as square as possible.
AMPL. trim-pot:
Trim-pot for setting
τ
-FAST in the electrode capacity
compensation circuit.
T.CONST. trim-pot: Trim-pot for setting C-FAST in the electrode capacity
compensation circuit.
Note: CAPACITY COMPENSATION works only for the electrode capacity, not for the
capacity of the cell membrane. Therefore, capacitive transients of the cell are always
present when square shaped pulses are applied in VC mode.
(17) HOLD. POT. (mV) switch
Switch for setting the polarity of the holding potential in VC/VCx10 mode or for the
GATED stimulus (see also #10). In zero position the holding potential/gated stimulus is
disabled.
(18) HOLD. POT. (mV) potentiometer
Control for setting the amplitude of the continuous holding potential, or for setting the
amplitude of the GATED stimulus (see also #10) in VC mode (range:
±
1000 mV) or in
VCx10 mode (range:
±
10 V). In zero position the holding/gated potential is disabled.
