B&K 1652, 1651A instruction manual Supply Controls and Indicators

CONTROLS AND INDICATORS

1. POWER Switch. Turns power on and off.

2. Power ON light. Red LED lights to indicate a power on condition.

3. GND Terminal (Green). Earth and Chassis Ground.

4. A/B Metering Switch. Selects simultaneous Voltage & Current metering for the “A” or “B” supplies. When in the A position, the V and mA meters are connected to the “A” supply. When in the B position, the V and mA meters are connected to the “B” supply.

5. V Meter. Indicates voltage on the “A” or “B” supply depending on the position of the A/B Metering switch.

6. mA Meter. Indicates current on the "A" or "B" supply depending on the position of the A/B Metering switch.

7. Zero Adjusts. Mechanical zero adjusts for the V & mA Meters thru the front panel with a slotted screwdriver.

8. TRACKING/INDEPENDENT Mode Switch: Three Position switch that selects INDEPENDENT mode, PARALLEL TRACKING mode, or SERIES TRACKING mode of the “A” and “B” supplies as follows:

a. When the switch is in the right position, the unit is in the INDEPENDENT mode and the “A” and “B” power supplies are completely independent from one another.

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b.When the switch is in the middle position, the unit is in the PARALLEL TRACKING mode. In this mode the “A” and “B” supplies are wired together in parallel and both the maximum current and voltage are set using the “A” controls. The “A” and “B” outputs can be used as two individual (but tracking) power supplies or just the “A” output can be used as a 0-to-24 volt supply with a 1 A capability.

c.When the switch is in the left position, the unit is in the SERIES TRACKING mode. In this mode, maximum voltage of both supplies is set using the “A” VOLTAGE controls (voltage at output terminals of the “B” supply tracks the voltage at the output terminals of the “A” supply). Also, in this mode of operation the positive terminal (red) of the “B” supply is internally connected to the negative terminal (black) of the “A” supply. This allows the two supplies to be used as one 0- to-48 volt supply.

“A” SUPPLY CONTROLS AND INDICATORS

9.VOLTAGE Control. Adjusts the output voltage of the “A” supply. Also functions as the adjustment control for the maximum output voltage of the “B” supply when either parallel or series tracking mode is selected. Voltage can be read from the V Meter when the A Metering mode is selected.