Model Cells, Cables, Odd Bits

Model Cells and Adapters

Click on the pictures to see the model cell circuit diagrams

CLAMP-1U model cell Suitable for evaluating two-electrode voltage clamp and discontinuous single-electrode voltage clamp. Contains two "electrodes" that can be connected to the "bath" or the "cell." Connectors are suitable for U-type HS series headstages. Provided at no charge with all Axoclamps and Axoprobes.
PATCH-1U model cell Simulates whole-cell clamp and single-channel patch-clamp conditions. Connectors are suitable for U-type CV series headstages. Provided at no charge with all Axopatches.
MCO-2U oocyte model cell Simulates the membrane resistance, membrane capacitance and a membrane- bound component of the series resistance. Resistors simulate the intracellular electrodes, a patch-clamp electrode and the bath grounding and sensing electrodes. A switch enables testing the amplifier under conditions of high current/low membrane resistance. Connectors are suitable for U-type HS series headstages.
MCB-1U bilayer model cell Contains a series resistor and capacitor to simulate a bilayer membrane. Connectors are suitable for U-type CV series headstages. The MCB-1U is provided with the Axopatch 200A patch clamp.
MCW-1U whole-cell model cell Simulates a whole-cell patch-clamp recording system. Connectors are suitable for U-type HS series headstages. Provided at no charge with the Axoclamp-2B.

Model Cell Adapters

HS and CV headstages are connected to model cells through 1 or 2 mm pin connectors. We supply adapters on request that facilitate connections between headstages and model cells of different types. All adapters have a socket on one end and a pin on the other end. Adapter descriptions and Axon Part Numbers (APN #) are given in the table below.

Model Cells	Headstages
	HS non-U type 2 mm socket	CV non-U type 1 mm socket	HS & CV U type 1 mm socket
Non-U type 2 mm pins Clamp-1 MCB-1 MCO-1 E1,E2* MCW-1	No adapter needed	2 mm socket to 1 mm pin APN 2200-063	2 mm socket to 1 mm pin APN 2200-063
Non-U type recessed 1 mm pins MCO-1 E3* Patch-1	1 mm socket to 2 mm pin APN 2200-083	1 mm socket to 1 mm pin APN 2200-062	1 mm socket to 1 mm pin APN 2200-062
U type 1 mm pins Clamp-1U MCB-1U MCO-1U E1,E2,E3* MCW-1U Patch-1U	1 mm socket to 2 mm pin APN 2200-083	1 mm socket to 1 mm pin APN 2200-062	No adapter needed

*E# - electrode input #

All ground connections on model cells and headstages have 2 mm sockets, except the CV203BU headstage, which has a 1 mm ground socket.

Cables

USB-Serial Converter PC serial adapter
Adds a serial port to PC computers with only USB ports. Allows use of the APN 2100-0623 PC serial cable for computer-controlled amplifiers. For use with MultiClamp 700A, GeneClamp 500B, and CyberAmp 380/320.

APN 2100-0623  PC serial cable
25-to-9 pin serial cable connects PC computers to computer-controlled amplifiers (MultiClamp 700A, GeneClamp 500B and CyberAmp 380/320). This null-modem cable requires a 9-pin serial port connector on the computer.

APN 2100-0134  expansion cable
Links computer-controlled amplifiers together, to allow them to run from a single serial port. Two-foot long "straight-through" flat ribbon cable.

APN 2100-0165  Macintosh serial cable
Connects Macintosh computers to computer-controlled amplifiers (GeneClamp and CyberAmp.) This null-modem cable requires a Macintosh-style serial port connector on the computer.

LU-1 link-up cable Allows the sample rates of two Axoclamps to be synchronized.

Odd Bits

HLP-0 pack of 5 general-purpose 2 mm plugs 2 mm plugs are used with the grounding jack of all headstages. These plugs also fit the input of non-U-type HS, VG and BH series headstages, and many SmartProbes.

RD-1-n headstage mounting rods 4 inch (100 mm) long insulated rods screw into back of all headstages. Replace "n" with diameter 1/4, 5/16 or 3/8 inch (6.3, 7.9 or 9.5 mm). RD-1-5/16 is supplied standard with all headstages.

Buzz Duration Control Hand-held control to enable the Buzz duration on the Axoclamp to be controlled in the range 1-50 ms. Provided at no charge with all Axoclamps.

Capacitance Measurement

DR-1 series resistance dither unit
Normally provides a short-circuit link between the preparation and ground. Under control of an external TTL-level signal, the DR-1 inserts a 500 kΩ resistor in series with the bath ground. The DR-1 is suitable for finding the phase tracking angle in capacitance measurement experiments using an Axopatch 200B amplifier.