SPECIFICATIONS
•
115
Chapter 9
Cell Capacitance
Telegraph Output: 0 to +10 V, proportional to setting 0-100 pF (for β = 1; 0-1000 pF for
β = 0.1 ) when WHOLE CELL CAP. switch is in the ON position.
0 to -10 V, when WHOLE CELL CAP. switch is in the OFF position.
Data Not Valid
Output goes High during a reset in PATCH mode or for the duration of a BLANK
ACTIVATE pulse in either PATCH or WHOLE CELL mode.
Panel Meter
3.5 digit meter displays TRACK potential (V
TRACK
) in mV, membrane potential (V
m
) in mV,
current noise (I
RMS
) in pA rms, membrane current (I) in pA or nA, HOLDING COMMAND
(V
HOLD
/I
HOLD
) in mV or nA, or capacitor-feedback circuitry temperature in degrees Celsius
(TEMP). Meter has autoranging feature when membrane current (I) or holding command
(V
HOLD
/I
HOLD
) is chosen.
Grounding
Signal ground is isolated from chassis and power ground. Signal ground is available on
rear panel.
Control Inputs
Above 3 V accepted as logic High. Below 2 V accepted as logic Low. Inputs protected to
±15 V.
Models
Unit is supplied with two model assemblies, the PATCH-1U and the MCB-1U.
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