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SPECIFICATIONS
Axopatch 200B, Copyright 1997-1999, Axon Instruments, Inc.
Holding Command
Ten-turn potentiometer with dial. Polarity switch. Toggle for x1 or x5 to determine range.
Value can be previewed on meter.
V-CLAMP mode
±200 mV (± 1 V with toggle x5).
I-CLAMP modes
±2 nA for β = 1, ±20 nA for β = 0.1 (toggle x1)
±10 nA for β = 1, ±100 nA for β = 0.1 (toggle x5)
Disabled in TRACK and I=0 mode.
Pipette Offset
Manual
±250 mV. Ten-turn control with uncalibrated dial.
Track, I=0
±200 mV. Nulling potential automatically adjusts to main-tain zero pipette current.
RMS Noise
3.5 digit meter displays rms current noise in pA. Measurement bandwidth is 30 Hz to
5 kHz. Upper -3 dB frequency is set by 4-pole Butterworth filter.
Inputs
Forced Reset
Positive edge triggered. Initiates a reset of the integrator; has no control over the duration
of reset.
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