Voltage Command Superfusion System

The DAD-8VC or DAD-16VC Voltage Controlled Superfusion System incorporates all of the best features of the DAD-12 but eliminates the laptop computer for control. The DAD-xVC is controlled from D/A and TTL output channels found on most data acquisition systems. For example, Pulse, Pclamp (the latest Windows version) , and CellWorks ( to name a few programs) can all control the system. The DAD-xVC requires the following outputs from a data acquisition system:

Voltage Command Superfusion System

The DAD-8VC or DAD-16VC Voltage Controlled Superfusion System incorporates all of the best features of the DAD-12 but eliminates the laptop computer for control. The DAD-xVC is controlled from D/A and TTL output channels found on most data acquisition systems. For example, Pulse, Pclamp (the latest Windows version) , and CellWorks ( to name a few programs) can all control the system. The DAD-xVC requires the following outputs from a data acquisition system:

1) one D/A - 0 to 10V in 500mV steps - for valve control
2) one TTL high - pressure enable
3) one TTL high - flush valve control

Each valve is controlled by a 500mV step. A 500mV output command from a D/A will open valve 1 as long as the 500mV is present. A 1V output will open valve 2 and so on. A TTL high signal is needed to enable a pressure valve which allows positive or negative pressure from an outside source (for example the PR-10 pressure regulator) to flow to the valve manifold. Another TTL high signal controls a flush valve (just as in the DAD-12). A manual mode is provided to help the user prime and/or clean the system. When the manual mode is enabled, a rotary switch turns each valve on.

The DAD-8VC system includes the controller, 8 valve manifold (pinch or soleniod), flush valve, 9 to 1 MicromanifoldŽ, miscellaneous cables, and small parts. The DAD-16VC includes 2 x 8 valve manifolds (pinch or soleniod), 17 to 1 MicromanifoldŽ, miscellaneous cables, and small parts. Software is unnecessary because users have control over all functions via their data acquisition hardware and software. The DAD-8VCS/16VCS is a system with 8/16 Lee solenoid valves and the DAD-8VCP/16VCP is a system with 8/16 pinch valves.

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