Keysight E3630A, Руководство по эксплуатации и обслуживанию

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3 Operating Instructions
34 Keysight E3630A Operating and Service Manual
If this brief checkout procedure or later use of the supply reveals a possible
malfunction, see the service information section for detailed test, troubleshooting,
and adjustment procedures.
Operation
This power supply can be operated individually or in parallel or series with another
supply (see Parallel operation and Series operation paragraphs). All output
terminals are isolated from ground. The ±20 V and +6 V outputs use a single
common output terminal. This common (COM) terminal or any one of the other
output terminals may be grounded to the chassis at the front panel ground
terminal (
in Figure 3-1 ), or all outputs may be left floating. Loads can be
connected separately between each of the 0 to ±20 V output terminals and the
COM terminal, or between the –20 V and the +20 V terminals for a 0 to 40 V
output. Each output voltage or current can be quickly selected for monitoring with
the push-button meter switches.
To monitor the 0 to 40 V output voltage, add the voltmeter readings of the +20 V
and –20 V output and use either the +20 V or the –20 V meter to measure the
current.
Tracking ratio control
With the Tracking Ratio control in the Fixed position, the voltage of the —20 V
supply tracks that of the +20 V supply within 1% for convenience in varying the
symmetrical voltages needed by operational amplifiers and other circuits using
balanced positive and negative inputs.
Turn the Tracking Ratio control counter clockwise out of the Fixed position to set
the voltage of the –20V supply lower than that of the +20 V supply. The negative
supply can be set from a minimum of less than 0.5 volts to a maximum within 5%
of the +20 V supply's output. Once this is done, the ±20 V voltage control still
controls both outputs and maintains a constant ratio between their voltages.
Overload protection circuits
±20-Volt Current Limit .
The +20 V and –20 V outputs are individually
protected against overload or short circuit damage by separate current limit
circuits to limit the output current to 0.55 A ± 5%. (This is 110% of the maximum
rated output.) If a single load is connected between the +20 V and –20 V outputs,
the circuit set for the lesser current limit will limit the output. No deterioration of
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