NL100AK
- Headstage |
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Differential input, low noise, high impedance
microelectrode amplifier headstage for use with NeuroLog preamplifier modules,
mainly with the NL104A AC Preamplifier (Extracellular
Amplifier). Suitable for extracellular
microelectrode recording techniques such as in vitro or in vivo
recording. Supplied with NL973A
accessory kit.
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NL100RK
(NL100AKS Headstage & NL100C Stimulus Controller) |
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Allowing
stimulation and recording through the same electrode, the
NL100RK provides an alternative to the NL100AK
headstage. The NL100C Stimulus Controller can switch
between recording and stimulating modes allowing a
stimulus of up to 100V (e.g from our DS2A
stimulator) to be applied to the preparation through the
recording electrode. This may be of use to lesion
and therefore identify a recording site at the end of an
experiment The NL100RK is designed for use with the
NL104A AC preamplifier (Extracellular Amplifier), see
below) and is suitable for in vitro or in vivo recording.
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NL102G
- DC Preamplifier (Intracellular
Recording Amplifier) |
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The NL102G
is a DC preamplifier (Intracellular Amplifier), including matched
headstage, designed for intracellular in vitro or in vivo recording.
Features include capacity neutralization, current
injection, low leakage current and low DC drift. It is
particularly suitable for intracellular amplification through high resistance fluid-filled electrodes.
Other functions include electrode impedance check,
calibrator, stimulus bridge balance and DC level
adjustment. Now supplied with the NL412 remote buzz box
and NL976 accessory
kit. The microelectrode amplifier headstage is the same size as the NL100AK shown above.
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NL104A
- AC Preamplifier (Extracellular
Recording Amplifier) |
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The
NL104A AC preamplifier is a low noise AC coupled
differential amplifier (Extracellular Amplifier). It can be used alone for making
in vitro or in vivo recordings from low resistance electrodes or with the
NL100AK headstage (or NL100AKS & NL100C) for extracellular microelectrode
recording. It can be operated in single-sided (inverting
or non-inverting), or differential modes. It has a wide
dynamic balance adjustment for asymmetrical inputs (useful
for balancing out interference and short artefacts), a
choice of two input time constants and eight
gains.
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NL106
- AC/DC Amplifier |
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Our
general purpose AC/DC amplifier features two continuously
variable ranges offering 0 to x10 or 0 to x100 gain.
It operates in single-sided (inverted or non-inverting) or
differential modes. In DC mode, an offset of up to
2V can be zeroed, this process is facilitated by
illuminating LEDs which indicate the position within the
range.
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NL107
- Recorder Amplifier |
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No
longer available- please see the NL109 below
The
NL107 recorder amplifier is a DC coupled differential
amplifier intended for use as a bridge amplifier or as a
recorder matching amplifier. Some of the NL107's features
include a wide gain range, an integral power supply for
bridge excitation, excellent DC stability, selectable
input time constants and a wide DC offset adjustment.
With a modification to the input socket or an NL957
adaptor cable, this module can
be used with the NL100AK for extracellular DC recordings
(e.g. field potentials).
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NL108A
- Pressure Amplifier |
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The NL108A
pressure amplifier module provides two gain settings, one
appropriate for blood pressure measurement (1.0V at the
output corresponds to 100mmHg pressure at the transducer)
and the other for low pressure measurement such as
intra-tracheal pressure (100mV at the output equals 1cmH2O
at the transducer port). An internal voltage calibrate
provides the appropriate deflection (1.0V or 100mV) for
these two ranges. Other features include excellent DC
stability, a push-button switch for setting the zero
pressure baseline on the recording instrument and a
sensitive zero offset control.
Although the
NL108A is designed to mate perfectly with our own pressure
transducers (NL108T2,
NL108T4), due to its internally
adjustable gain and bridge excitation voltage, it can be
used with a variety of other standard pressure
transducers.
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NEW
NL109
- Bridge Amplifier
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The
NL109 Bridge amplifier replaces and improves upon the NL107
Recorder Amplifier which is no longer available. The
NL109 is a DC amplifier suitable for making microelectrode
recordings (e.g of field potentials) in conjunction with
the NL100AK headstage or for making DC measurements with
our NL61 or NL62 force transducers or other compatible
transducers. The NL109 has a gain range of x1 to
x5k, a HF cut filter from 0.3Hz to 30kHz and LF cut
options of 0.1Hz, 10Hz or DC. An autozero button
allows the baseline to be reset with a single press.
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NL120S
- Audio Amplifier |
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The
NL120S Audio Amplifier is a power amplifier for driving a
4 or 8 ohm loudspeaker such as the NL985S. It has
sufficient power amplification to raise a +20mV signal to
a moderate sound level. The module features an input
selector for switching between two input signals, and the
options of amplifying only positive or negative peaks
(useful when baseline noise masks the sounds of nerve
spikes of interest). The output is shaped to improve the
low frequency response of small loudspeakers, and is power
limited to minimize the nuisance caused by large
transients such as shock artifacts.
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NL820A
- Isolator |
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The NL820A is
the module at the heart of the isolated amplifier range of
components, ideal for AC coupled recording applications
such as EEG, EMG and ECG in the research environment (the
NL820A is not MDD certified). The NL820A is a four channel unit with
independent gain and filtering control of each channel as
well as a mute facility. The NL820A MUST be used
with a preamplifier from the discontinued NL822/4 & NL832/4
ranges or our new NL844 (see below).
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NL822
- Two Channel AC Preamplifier |
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The NL822 is a 2 channel AC coupled preamplifier which
features front panel control of filter and gain settings.
The NL822 needs to be connected to the NL820A Isolator
module. The NL822 was designed as an
isolated EMG amplifier or EEG amplifier. The 4 channel NL824
preamplifier has now been replaced by the NL844,
see below.
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NL844
- Four Channel AC Preamplifier
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The
NL844 is a 4 channel AC coupled preamplifier which replaces the
NL824. Unlike the NL824, filter and gain settings are controlled
in pairs (i.e channels 1 & 2 and channels 3 & 4 share settings.
As well as amplifying 4 channels, the unit can also be operated
in a single or two channel mode (channels 1 & 3 or 2 & 4).
The NL844 needs to be connected to the NL820A Isolator module.
NL844's are ideally suited as a multi-channel EMG amplifiers or EEG
amplifiers.
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