Fisher FB200-2 manual Getting Started, Using the Power Supply

Getting Started

Select a location that allows for 3" clearance behind the power supply, and comfortable reach of the front panel controls and cell connections. Do not block the vented area of the case - on the front bottom of the unit, or the fan area at the rear. Connect the power supply to a 3-prong grounded AC outlet, using the AC cord provided with the unit only. Connect the electrophoresis apparatus to the power supply, making sure to match the red positive lead to the red positive jack, and the black negative lead to the black negative jack. Similarly, connect one or more electrophoresis apparatus to the power supply if you plan to run more than one in parallel. Power the unit on using the AC power switch located at the rear of the unit, next to the AC line cord entry.

Function keys

black negative jacks Exit key Clear key black negative jacks

red positive jacks

Run key	Stop key	red positive jacks
	Pause key
		gray ON/OFF key

Figure 1. Front Panel Controls

Using the Power Supply

Press the dark gray key on the front of the unit to enable/disable the control logic. The LCD display will illuminate and show the values of the last saved run setup. The FB200 preserves the run settings each time you start a run. One set of conditions is saved for each mode, constant voltage or constant current. The setpoint value, limit parameter, time duration, and power-fail restart settings are all saved. This allows convenient setup for repetitive runs.

To change the control mode, press the Exit key. From the resulting screen, select either constant volts or constant amps using the function keys to the right of the display.

After selecting a control mode, either constant voltage or current, and setting the limit and timed run parameters if desired (see Constant Voltage/Current Operations) press the Run key to energize the power supply output. The power supply output will ramp up to the appropriate setpoint, while not allowing the limit parameter to be exceeded. If the limit parameter should be exceeded, then the power supply will crossover control modes, making the limit parameter the new control

FB200-2 MANUAL Page 5 7608175 Rev A 8/02